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The Calibration Method of Line Structured Light Sensor for Integrated Position and Pose Detection of Highway Guardrail Inspection Robots
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作者 WANG Rui BAI Jiadi +4 位作者 XUE Yingqi PENG Lu FENG Xiaofan DING Ailing WEI Baojiang 《Wuhan University Journal of Natural Sciences》 2025年第4期367-378,共12页
The accuracy of center height detection for corrugated beam guardrails is significantly affected by robot posture in the mobile highway guardrail detection systems based on structured light vision.To address the probl... The accuracy of center height detection for corrugated beam guardrails is significantly affected by robot posture in the mobile highway guardrail detection systems based on structured light vision.To address the problem,this paper proposes an integrated calibration method for structured light vision sensors.In the proposed system,the sensor is mounted on a crawler-type mobile robot,which scans and measures the center height of guardrails while in motion.However,due to external disturbances such as uneven road surfaces and vehicle vibrations,the posture of the robot may deviate,causing displacement of the sensor platform and resulting in spatial 3D measurement errors.To overcome this issue,the system integrates inertial measurement unit(IMU)data into the sensor calibration process,enabling realtime correction of posture deviations through sensor fusion.This approach achieves a unified calibration of the structured light vision system,effectively compensates for posture-induced errors,and enhances detection accuracy.A prototype was developed and tested in both laboratory and real highway environments.Experimental results demonstrate that the proposed method enables accurate center height detection of guardrails under complex road conditions,significantly reduces posture-related measurement errors,and greatly improves the efficiency and reliability of traditional detection methods. 展开更多
关键词 highway corrugated guardrail structured light visual scanning structured light sensor calibration guardrail detection robot robot motion posture parameters
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Intelligent ETL for Enterprise Software Applications Using Unstructured Data
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作者 Manthan Joshi Vijay K. Madisetti 《Journal of Software Engineering and Applications》 2025年第1期44-65,共22页
Enterprise applications utilize relational databases and structured business processes, requiring slow and expensive conversion of inputs and outputs, from business documents such as invoices, purchase orders, and rec... Enterprise applications utilize relational databases and structured business processes, requiring slow and expensive conversion of inputs and outputs, from business documents such as invoices, purchase orders, and receipts, into known templates and schemas before processing. We propose a new LLM Agent-based intelligent data extraction, transformation, and load (IntelligentETL) pipeline that not only ingests PDFs and detects inputs within it but also addresses the extraction of structured and unstructured data by developing tools that most efficiently and securely deal with respective data types. We study the efficiency of our proposed pipeline and compare it with enterprise solutions that also utilize LLMs. We establish the supremacy in timely and accurate data extraction and transformation capabilities of our approach for analyzing the data from varied sources based on nested and/or interlinked input constraints. 展开更多
关键词 structured Data Relational Model LLM-Powered Agents Field-Level Extraction Knowledge Graph
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Monocular visual estimation for autonomous aircraft landing guidance in unknown structured scenes
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作者 Zhuo ZHANG Quanrui CHEN +2 位作者 Qiufu WANG Xiaoliang SUN Qifeng YU 《Chinese Journal of Aeronautics》 2025年第9期365-382,共18页
The autonomous landing guidance of fixed-wing aircraft in unknown structured scenes presents a substantial technological challenge,particularly regarding the effectiveness of solutions for monocular visual relative po... The autonomous landing guidance of fixed-wing aircraft in unknown structured scenes presents a substantial technological challenge,particularly regarding the effectiveness of solutions for monocular visual relative pose estimation.This study proposes a novel airborne monocular visual estimation method based on structured scene features to address this challenge.First,a multitask neural network model is established for segmentation,depth estimation,and slope estimation on monocular images.And a monocular image comprehensive three-dimensional information metric is designed,encompassing length,span,flatness,and slope information.Subsequently,structured edge features are leveraged to filter candidate landing regions adaptively.By leveraging the three-dimensional information metric,the optimal landing region is accurately and efficiently identified.Finally,sparse two-dimensional key point is used to parameterize the optimal landing region for the first time and a high-precision relative pose estimation is achieved.Additional measurement information is introduced to provide the autonomous landing guidance information between the aircraft and the optimal landing region.Experimental results obtained from both synthetic and real data demonstrate the effectiveness of the proposed method in monocular pose estimation for autonomous aircraft landing guidance in unknown structured scenes. 展开更多
关键词 Automatic landing Image processing Monocular camera Pose measurement Unknown structured scene
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Direct measurement and optimization of the polarization-dependent modulation depth in super-resolution structured illumination microscopy
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作者 Linbo Wang Simin Li +4 位作者 Xiaohu Chen Xin Jin Jie Zhang Hui Li Gang Wen 《Journal of Innovative Optical Health Sciences》 2025年第4期121-131,共11页
Maintaining the s-polarization state of laser beams is important to achieve high modulation depth in a laser-interference-based super-resolution structured illumination microscope(SR-SIM).However,the imperfect optical... Maintaining the s-polarization state of laser beams is important to achieve high modulation depth in a laser-interference-based super-resolution structured illumination microscope(SR-SIM).However,the imperfect optical components can depolarize the laser beams hence degenerating the modulation depth.Here,we first presented a direct measurement method designed to estimate the modulation depth more precisely by shifting illumination patterns with equal phase steps.This measurement method greatly reduces the dependence of modulation depths on the samples,and then developed a polarization optimization method to achieve high modulation depth at all orientations by actively and quantitatively compensating for the additional phase difference using a combination of waveplate and a liquid crystal variable retarder(LCVR).Experimental results demonstrate that our method can achieve illumination patterns with modulation depth higher than 0.94 at three orientations with only one LCVR voltage,which enables isotropic resolution improvement. 展开更多
关键词 structured illumination microscopy DEPOLARIZATION modulation depth phase compensation
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Rapid lime dissolution for efficient dephosphorization by self-disintegrating effect of core–shell structured lime in converter slag
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作者 Jia-xin Zhang Yu-feng Tian +1 位作者 Guang-qiang Li Yu Liu 《Journal of Iron and Steel Research International》 2025年第9期3089-3095,共7页
The dissolution behaviors of lime,limestone,and core–shell structured lime,as well as their effects on dephosphorization behavior were studied.The results show that the slow dissolution of lime in converter slag is m... The dissolution behaviors of lime,limestone,and core–shell structured lime,as well as their effects on dephosphorization behavior were studied.The results show that the slow dissolution of lime in converter slag is mainly attributed to the calcium silicate layer at the lime/slag interface.CO_(2)generated by CaCO_(3)decomposition can destroy the calcium silicate layer,and thus accelerates the dissolution of limestone and core–shell structured lime.However,in the initial stage,a large amount of CO_(2)emission generated by limestone decomposition results in the poor contact between molten slag and limestone,and the dissolution rate is slower in the test of limestone than that of lime.For core–shell structured lime,the initial dissolution rate is not affected due to the lime surface,and is accelerated by the appropriate CO_(2)emission.Rapid CaO pickup in molten slag by fast dissolution of the lime sample can remarkably accelerate the dephosphorization reaction.Because of the fastest dissolution rate,the core–shell structured lime slagging mode shows the most promising prospects for the efficient dephosphorization. 展开更多
关键词 Lime dissolution DEPHOSPHORIZATION Slag-metal interaction Core-shell structured lime CaCO_(3)decomposition
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Quantitative evaluation of intensity fidelity of superresolution reconstruction for structured illumination microscopy
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作者 Yujun Tang Linbo Wang +1 位作者 Gang Wen Hui Li 《Journal of Innovative Optical Health Sciences》 2025年第1期153-163,共11页
Super-resolution structured illumination microscopy(SR-SIM)relies heavily on post-processing reconstruction to obtain high-quality SR images from raw data.Although many SIM reconstruction algorithms have been develope... Super-resolution structured illumination microscopy(SR-SIM)relies heavily on post-processing reconstruction to obtain high-quality SR images from raw data.Although many SIM reconstruction algorithms have been developed to recover fine cellular structures with high fidelity even from the noisy data,whether the pixel intensities of reconstructed SR images are still proportional to the original fluorescence intensity has been less explored.The linearity between the intensity before and after reconstruction is de fined as the intensity fidelity.Here,we proposed a method to evaluate the reconstructed SR image intensity fidelity at different spatial frequencies.With the proposed metric,we systematically investigated the impact of the key factors on the intensity fidelity in the standard Wiener-SIM reconstructions with simulated data,then evaluated the intensity fidelity of the SR images reconstructed by representative open-source packages.Our work provides a reference for SR-SIM image intensity fidelity improvement. 展开更多
关键词 structured illumination microscopy super-resolution image reconstruction intensity fidelity spectrum optimization
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Coastal bridge infrastructure: energy-harvesting and sensing capabilities through magnetic structured triboelectric nanogenerators
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作者 Ali MATIN NAZAR Arash RAYEGANI +1 位作者 Maria RASHIDI Fatemeh RAHIMI SARDO 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 2025年第6期540-557,共18页
This paper provides an overview of the recent advancements in magnetic structured triboelectric nanogenerators(MSTENGs)and their potential for energy harvesting and sensing in coastal bridge infrastructure.This paper ... This paper provides an overview of the recent advancements in magnetic structured triboelectric nanogenerators(MSTENGs)and their potential for energy harvesting and sensing in coastal bridge infrastructure.This paper begins with a brief discussion on the fundamental physics modes of triboelectric nanogenerators(TENGs),triboelectric series,and factors affecting TENG power generation and transmission,providing a foundation for the subsequent sections.The review focuses on the different types of MSTENGs and their applications in coastal infrastructure.Specifically,it covers magnetic spherical TENG networks,magnet-assisted TENGs,MSTENGs for bridges,and magnetic multilayer structures based on TENGs.The advantages and limitations of each type of MSTENG are discussed in detail,highlighting their respective suitability for different coastal bridge infrastructure applications.In addition,the paper addresses the challenges and provides insights into the future of MSTENGs.These include the need for improved durability and sustainability of MSTENGs in harsh coastal environments,increasing their power-output levels to fulfll high energy needs,and the requirement for collaborative efforts between academia,industry,and government institutions to optimize MSTENG performance. 展开更多
关键词 Energy harvesting Intelligent coastal infrastructure Triboelectric nanogenerator(TENG) Magnetic structured
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Production and magnetic self-confinement of e^(-)e^(+)plasma by an extremely intense laser pulse incident on a structured solid target
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作者 Alexander Samsonov Alexander Pukhov 《Matter and Radiation at Extremes》 2025年第5期10-19,共10页
We propose an all-optical,single-laser-pulse scheme for generating a dense relativistic strongly magnetized electron-positron pair plasma.The scheme involves the interaction of an extremely intense(I■10^(24) W/cm^(2)... We propose an all-optical,single-laser-pulse scheme for generating a dense relativistic strongly magnetized electron-positron pair plasma.The scheme involves the interaction of an extremely intense(I■10^(24) W/cm^(2))circularly polarized laser pulse with a solid-density target containing a conical cavity.Through full-scale three-dimensional particle-in-cell simulations that account for quantum electrodynamic effects,it is shown that this interaction results in two significant outcomes:first,the generation of quasi-static magnetic fields reaching tens of gigagauss,and,second,the production of large quantities of electron-positron pairs(up to 10^(13))via the Breit-Wheeler process.The e^(-)e^(+)plasma becomes trapped in the magnetic field and remains confined in a small volume for hundreds of femtoseconds,far exceeding the laser timescale.The dependence of pair plasma parameters,as well as the efficiency of plasma production and confinement,is discussed in relation to the properties of the laser pulse and the target.Realizing this scheme experimentally would enable the investigation of physical processes relevant to extreme astrophysical environments. 展开更多
关键词 polarized laser pulse intense laser pulse structured solid target quantum electrodynamic effects generation magnetic confinement electron positron plasma Breit Wheeler process
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Noncommutative metasurfaces enabled diverse quantum path entanglement of structured photons
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作者 Yan Wang Yichang Shou +5 位作者 Jiawei Liu Qiang Yang Shizhen Chen Weixing Shu Shuangchun Wen Hailu Luo 《Opto-Electronic Science》 2025年第10期1-12,共12页
Quantum entanglement, a fundamental concept in quantum mechanics, lies at the heart of many current and futurequantum technologies. A pivotal task is the generation and control of diverse quantum entangled states in a... Quantum entanglement, a fundamental concept in quantum mechanics, lies at the heart of many current and futurequantum technologies. A pivotal task is the generation and control of diverse quantum entangled states in a more compactand flexible manner. Here, we introduce an approach to achieve diverse path entanglement by exploiting the interactionbetween noncommutative metasurfaces and entangled photons. Different from other path entanglements, ourquantum path entanglement is evolution path entanglement of photons on Poincaré sphere. Due to quantum entanglementbetween idler photons and structured signal photons, evolution path of idler photons on the fundamental Poincarésphere can be nonlocally mirrored by structured signal photons on any higher-order Poincaré sphere, resulting in quantumpath entanglement. Benefiting from noncommutative metasurfaces, diverse quantum path entanglement can beswitched across different higher-order Poincaré spheres using distinct combination sequences of metasurfaces. Ourmethod allows for the tuning of diverse quantum path entanglement across a broad spectrum of quantum states, offeringa significant advancement in the manipulation of quantum entanglement. 展开更多
关键词 noncommutative metasurfaces structured photons diverse path entanglement
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Fast Parallel Magnetic Resonance Imaging Reconstruction Based on Sparsifying Transform Learning and Structured Low-Rank Model
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作者 DUAN Jizhong XU Yuhan HUANG Huan 《Journal of Shanghai Jiaotong university(Science)》 2025年第3期499-509,共11页
The structured low-rank model for parallel magnetic resonance(MR)imaging can efficiently reconstruct MR images with limited auto-calibration signals.To improve the reconstruction quality of MR images,we integrate the ... The structured low-rank model for parallel magnetic resonance(MR)imaging can efficiently reconstruct MR images with limited auto-calibration signals.To improve the reconstruction quality of MR images,we integrate the joint sparsity and sparsifying transform learning(JTL)into the simultaneous auto-calibrating and k-space estimation(SAKE)structured low-rank model,named JTLSAKE.The alternate direction method of multipliers is exploited to solve the resulting optimization problem,and the optimized gradient method is used to improve the convergence speed.In addition,a graphics processing unit is used to accelerate the proposed algorithm.The experimental results on four in vivo human datasets demonstrate that the reconstruction quality of the proposed algorithm is comparable to that of JTL-based low-rank modeling of local k-space neighborhoods with parallel imaging(JTL-PLORAKS),and the proposed algorithm is 46 times faster than the JTL-PLORAKS,requiring only 4 s to reconstruct a 200×200 pixels MR image with 8 channels. 展开更多
关键词 structured low-rank parallel magnetic resonance imaging sparsifying transform learning alternating direction method of multipliers optimized gradient method
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Towards understanding the microstructure-mechanical property correlations of multi-level heterogeneous-structured Al matrix composites
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作者 Yuesong Wu Xiaobin Lin +4 位作者 Xudong Rong Xiang Zhang Dongdong Zhao Chunnian He Naiqin Zhao 《Journal of Materials Science & Technology》 2025年第6期117-123,共7页
1.Introduction The strength-ductility trade-offdilemma has long been a per-sistent challenge in Al matrix composites(AMCs)[1,2].This is-sue primarily arises from the agglomeration of reinforcements at the grain bounda... 1.Introduction The strength-ductility trade-offdilemma has long been a per-sistent challenge in Al matrix composites(AMCs)[1,2].This is-sue primarily arises from the agglomeration of reinforcements at the grain boundaries(GBs),which restricts local plastic flow dur-ing the plastic deformation and leads to stress concentration[3,4].Recently,the development of concepts aimed at achieving hetero-geneous grain has emerged as a promising approach for enhanc-ing comprehensive mechanical properties[5,6]. 展开更多
关键词 reinforcements agglomeration comprehensive mechanical properties agglomeration reinforcements plastic deformation strength ductility trade off multi level heterogeneous structured Al matrix composites microstructure mechanical property correlations al matrix composites amcs
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In situ constructing lamella-heterostructured nanoporous CoFe/CoFe_(2)O_(4) and CeO_(2−x) as bifunctional electrocatalyst for high-current-density water splitting 被引量:1
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作者 Yue Deng Jin Wang +6 位作者 Shao-Fei Zhang Zhi-Jia Zhang Jin-Feng Sun Tian-Tian Li Jian-Li Kang Hao Liu Shi Bai 《Rare Metals》 2025年第2期1053-1066,共14页
The stability and electrocatalytic efficiency of transition metal oxides for water splitting is determined by geometric and electronic structure,especially under high current densities.Herein,a newly designed lamella-... The stability and electrocatalytic efficiency of transition metal oxides for water splitting is determined by geometric and electronic structure,especially under high current densities.Herein,a newly designed lamella-heterostructured nanoporous CoFe/CoFe_(2)O_(4) and CeO_(2−x),in situ grown on nickel foam(NF),holds great promise as a high-efficient bifunctional electrocatalyst(named R-CoFe/Ce/NF)for water splitting.Experimental characterization verifies surface reconstruction from CoFe alloy/oxide to highly active CoFeOOH during in situ electrochemical polarization.By virtues of three-dimensional nanoporous architecture and abundant electroactive CoFeOOH/CeO_(2−x) heterostructure interfaces,the R-CoFe/Ce/NF electrode achieves low overpotentials for oxygen evolution(η_(10)=227 mV;η_(500)=450 mV)and hydrogen evolution(η_(10)=35 mV;η_(408)=560 mV)reactions with high normalized electrochemical active surface areas,respectively.Additionally,the alkaline full water splitting electrolyzer of R-CoFe/Ce/NF||R-CoFe/Ce/NF achieves a current density of 50 mA·cm^(−2) only at 1.75 V;the decline of activity is satisfactory after 100-h durability test at 300 mA·cm^(−2).Density functional theory also demonstrates that the electron can transfer from CeO_(2−x) by virtue of O atom to CoFeOOH at CoFeOOH/CeO_(2−x) heterointerfaces and enhancing the adsorption of reactant,thus optimizing electronic structure and Gibbs free energies for the improvement of the activity for water splitting. 展开更多
关键词 Lamellar nanoporous structure Electronic structure regulation High current density Theoretical calculation Overall water splitting
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Construction and structural evolution of heterostructured cobalt-iron alloys@phosphates as oxygen evolution electrocatalyst toward rechargeable Zn-air battery
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作者 Yukang Xiong Lin Lv +3 位作者 Guokun Ma Hanbin Wang Houzhao Wan Hao Wang 《Chinese Journal of Structural Chemistry》 2025年第11期17-27,共11页
Addressing the kinetic limitations of oxygen evolution reaction(OER)is paramount for advancing rechargeable Zn-air batteries,thus it is extremely urgent to drive the development of effective and affordable electrocata... Addressing the kinetic limitations of oxygen evolution reaction(OER)is paramount for advancing rechargeable Zn-air batteries,thus it is extremely urgent to drive the development of effective and affordable electrocatalysts.This work constructs the interfacial structure of cobalt-iron alloys@phosphates(denoted as CoFe/CoFePO)as OER catalyst through a two-step approach using water-bath and hydrothermal methods,which demonstrated significant OER activity in alkaline media,requiring a low overpotential of 271 mV to achieve 10 mA cm^(−2) and exhibiting a competitive Tafel slope of 65 mV dec^(-1),alongside sustained operational stability.The enhanced performance can be attributed to the improved electrical conductivity due to the participation of CoFe alloys and the increased number of active sites through partial phosphorylation,which synergistically enhances charge transfer processes and accelerates OER kinetics.Moreover,dynamic structural evolution during OER process was thoroughly probed,and the results show that alloys@phosphates gradually evolve into phosphate radicalmodified CoFe hydroxyoxides that act as the actual active phase.Highlighting its practical applicability,the integration of prepared catalyst into zinc-air batteries leads to markedly improved performance,thereby offering promising new strategic directions for the development of next-generation OER electrocatalysts. 展开更多
关键词 Zn-air battery ELECTROCATALYST Interfacial structure Oxygen evolution reaction Structural evolution
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Additive manufacturing and performance study of hierarchically structured ceramics and monolithic catalysts
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作者 Shuwang Wu Lei Tan +8 位作者 Xiaoyong Tian Cunbao Huo Zhiqiang Wu Zhun Hu Yang Yang Kunfeng Liu Xiaofei Liu Lihua Zhang Dichen Li 《Additive Manufacturing Frontiers》 2025年第4期29-47,共19页
In the background of carbon neutrality,monolithic ceramic catalysts are universally used in energy conversion and chemical catalysis due to the high heat and mass transfer efficiencies,low bed pressures,and scalabilit... In the background of carbon neutrality,monolithic ceramic catalysts are universally used in energy conversion and chemical catalysis due to the high heat and mass transfer efficiencies,low bed pressures,and scalability through modular design.However,traditional manufacturing processes are limited by mold dependence,organic solvent toxicity,and insufficient molding capability for complex structures,resulting in difficulty achieving precise regulation of cross-scale pores.Additive manufacturing(AM)technology employs a digital layered molding strategy to achieve the cross-scale structural regulation of catalysts from macroscopic flow channels to mesopores and micropores.This paper summarizes recent advances in the structural design of monolithic catalysts enabled by AM technologies and highlights their emerging applications in catalytic processes.Structurally,AM-fabricated monoliths have been effectively employed in key chemical reactions such as fuel reforming,CO_(2)conversion,biofuel synthesis.Strategies such as geometrical topology optimization,multi-scale pore synergy,biomimetic structural design,and functional gradient integration have been utilized to enhance heat and mass transport,reduce pressure drops,and improve overall catalytic performance.By overcoming the limitations of traditional catalysts,AM technologies create a new paradigm for addressing the longstanding challenge of coupling mass transfer with reaction kinetics.This approach provides a feasible pathway for driving both theoretical innovation and practical implementation of high-efficiency catalytic systems. 展开更多
关键词 Additive manufacturing Porous ceramics Monolithic catalyst Cross-scale structural design Hierarchical structures
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Hollow tubular-structured molybdenum diselenide/carbon hybrid decorated by titanium dioxide nanoparticles for superior lithium-ion storage
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作者 Ren-Quan Hu Yi-Fan Qin +6 位作者 Jing-Xuan Li Peng Zhang Ning Zhao Teng Wang Ya-Qi Xu Qing-Yang Mu Yong Yang 《Rare Metals》 2025年第2期879-888,共10页
One-dimensional nanomaterials with hollow structures could provide large space for ion storage and charge accumulation.Herein,TiO_(2)/MoSe_(2)-Carbon nanotube composite(NT)materials were designed and fabricated by the... One-dimensional nanomaterials with hollow structures could provide large space for ion storage and charge accumulation.Herein,TiO_(2)/MoSe_(2)-Carbon nanotube composite(NT)materials were designed and fabricated by the template method and the chelation coordination reaction.The stability and conductivity were improved by the presence of titanium and hollow tubular-architecture carbon in the whole structure.As a result,the as-prepared TiO_(2)/MoSe_(2)-Carbon hybrid achieved a high-rate performance of 760.0 mAh·g^(−1) at a current density of 0.1 A·g^(−1),while still obtaining stability after 300 charge/discharge cycles.The enhancement of the lithium storage capacity mainly contributed to the acceleration of the electron conductivity and the storage kinetics.Moreover,the hollow structure reduced the volume strain and stress caused by the rapid insertion and removal of lithium ions,which ensured the favorable stability of lithium storage.The experiment shows that the kinetic of the TiO_(2)/MoSe_(2)-carbon hybrid during the lithium storage process is dominated by the pseudocapacitance mechanism.This work provides a new idea and scheme for the design and preparation of hierarchical nanotube composite electrode materials. 展开更多
关键词 Hollow structure Hierarchical structure Carbon nanotubes MoSe_(2)nanosheets Lithium-ion batteries
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Robust Photo-responsive Superwetting Surfaces on Hierarchical-structured Copper Mesh via Dip-coating with Mussel-inspired Azo-copolymer
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作者 Bo-Lun Feng Cong-Cong Zhai +7 位作者 De-Bin Zhang Hao-Chen Guo Hou-Li Zhang Lin Zhang Hui Li Lu Wang Lan Lei Chuan-Yong Zong 《Chinese Journal of Polymer Science》 2025年第7期1134-1145,共12页
Endowing stimuli-responsive materials with micro-nano structures is an intriguing strategy for the fabrication of superwetting surfaces;however,its application is limited by poor chemical/mechanical stability.Herein,a... Endowing stimuli-responsive materials with micro-nano structures is an intriguing strategy for the fabrication of superwetting surfaces;however,its application is limited by poor chemical/mechanical stability.Herein,a simple and versatile strategy was developed to fabricate durable polymeric superwetting surfaces with photoswitchable wettability on hierarchically structured metallic substrates.Inspired by nature,a novel functional terpolymer incorporating mussel-inspired catechol groups,photoresponsive azobenzene groups,and low-surface-energy fluorine-containing groups was synthesized via solution radical polymerization.The azobenzene-containing terpolymer possesses outstanding photoresponsiveness in both the solution and film states because of the trans-cis isomerization of the azobenzene moieties.After dip-coating with the mussel-inspired azo-copolymer,the as-prepared smart surfaces exhibited a photo-triggered change in wettability between high hydrophobicity and superhydrophilicity.More importantly,these superwetting surfaces with enhanced adhesion properties can tolerate harsh environmental conditions and repeated abrasion tests,thereby demonstrating excellent chemical robustness and mechanical durability.This study paves a new avenue for the convenient and large-scale fabrication of robust smart surfaces that could find widespread potential applications in microfluidic devices,water treatment,and functional coatings. 展开更多
关键词 PHOTO-RESPONSIVE Azo-copolymer Superwetting Hierarchical structures DIP-COATING
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Construction of sandwich-structured Co_(3)O_(4)-Fe_(3)O_(4) composite electrode with free binder for high-performance all-solid-state supercapacitor
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作者 Xu Zhang Ke-Yu Zhao +3 位作者 Shuang Su Zhong-Li Zou Yong-Qiang Qian Kui Cheng 《Rare Metals》 2025年第7期4657-4668,共12页
With the rapid development of flexible equipment,high-energy/-power requirements have been proposed for energy storage devices.Nevertheless,the poor conductivities of metallic oxides and their low levels of transmissi... With the rapid development of flexible equipment,high-energy/-power requirements have been proposed for energy storage devices.Nevertheless,the poor conductivities of metallic oxides and their low levels of transmission of electrons/ions hinder their widespread application.Here,a sandwich-structured Co_(3)O_(4)-Fe_(3)O_(4)(CFO) composite with binder-free was synthesized on a carbon cloth substrate via co-precipitation and partial ion exchange.The appropriate substitution of Co_(3)O_(4)with Fe_(3)O_(4)is favorable in promoting the rapid transfer of electrolyte ions and alleviating changes in volume during the electrochemical studies.When the duration of the substitution reaction is 20 min,the obtained electrode delivers a maximum specific capacitance of 1196.2 Fg^(-1)at a current density of 1 A g^(-1)and a superior capacity retention of~71%when the current density varies from 1to 30 Ag^(-1).Furthermore,the fabricated CFO//activated carbon flexible all-solid-state supercapacitor exhibits arespective maximum energy and power density of 68.7Wh kg^(-1)and 16,000 W kg^(-1)and excellent flexibility.It also displays a specific capacity retention of 81.3%under four continuous bending states at a current density of 6A g^(-1)over 10,000 cycles.These remarkable electrochemical char ac teristics suggest that the sandwich-structured CFO composite displays considerable potential for application in flexible high-energy/-power supercapacitors. 展开更多
关键词 SUPERCAPACITORS Flexibility ALL-SOLID-STATE Sandwich structure
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Recent advances in core-shell structured noble metal-based catalysts for electrocatalysis
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作者 Chen-Chen Wang Zeng-Sheng Guo +6 位作者 Qi Shen Yan-Ru Xu Cui-Ping Lin Xiao-Dong Yang Cun-Cheng Li Yi-Qiang Sun Li-Feng Hang 《Rare Metals》 2025年第4期2180-2207,共28页
The novel generation of clean energy has captured substantial public interest as the ecological environment deteriorates and fossil energy sources become depleted,with electrochemical catalysis deemed essential to the... The novel generation of clean energy has captured substantial public interest as the ecological environment deteriorates and fossil energy sources become depleted,with electrochemical catalysis deemed essential to the progress of clean energy technologies.Core-shell nanocomposite materials exhibit excellent chemical erosion resistance and effectively mitigate issues such as nanoparticle aggregation and sintering.Therefore,core-shell electrocatalysts demonstrate considerable advantages,such as enhanced activity and stability,making them widely applicable in electrocatalysis.This review offers an extensive summary of the latest advances,techniques,and applications of core-shell noble metal-based catalysts in electrocatalysis,encompassing a diverse range of synthesis techniques and strategies designed to fine-tune electrocatalytic performance.The article presents techniques such as seed-mediated growth,electrodeposition,template synthesis,and self-assembly and further delves into control strategies for enhancing electrocatalytic performance via case studies,examining electronic and geometric effects,with the former broken down into strain and ligand effects.Next,the article focuses on the remarkable progress achieved by noble metal-based core-shell structures in enhancing the efficiency of key electrocatalytic reactions,such as the hydrogen evolution reaction(HER),oxygen evolution reaction(OER),oxygen reduction reaction(ORR),and carbon dioxide reduction reaction(CO_(2)RR).Finally,the primary challenges and future prospects in this field are discussed,offering insight that will inform further research and development efforts.The primary objective of this review is to illuminate the design and construction of novel core-shell noble metal-based catalysts for energy storage and conversion technologies. 展开更多
关键词 Core-shell structure NANOMATERIALS Noble metal ELECTROCATALYSTS
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Multilevel structured CuCoP with synergistic catalytic active site designed for hydrogen evolution coupled gluconic acid synthesis
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作者 Xiang-Dong Ma Rui Liu +2 位作者 Shan Yue Hai-Jiao Xie Xiao-Hong Xia 《Rare Metals》 2025年第5期3141-3155,共15页
Hydrogen production coupled with small molecule oxidation derived by renewable energy power has been widely studied as an effective method to reduce energy consumption and prepare added value production.Here,the coppe... Hydrogen production coupled with small molecule oxidation derived by renewable energy power has been widely studied as an effective method to reduce energy consumption and prepare added value production.Here,the copper-cobalt phosphide with a multilevel structure has been designed based on the hard and soft acids and bases theory.The nanocone composed of lamellas presented a sharp tip,which a positive effect on the mass transfer enhanced by a local electric field,and the nanolamellas contain CoP/Cu_(3)P interface provide the highly selective active site for the gluconic acid(GNA)synthesis and hydrogen evolution.The catalyst can drive hydrogen evolution at 5 A·cm^(-2)up to 437 h without active decay,and the electrocatalytic glucose oxidation at anode presents high efficiency due to Cu(I)introduction and the synergetic effect between interfaces.Density functional theory(DFT)calculation shows that water splitting more readily occurs at the CoP,which provides adsorbed H and-OH for hydrogen evolution and glucose oxidation,respectively,and glucose adsorption more readily occurs at the Cu_(3)P,which presents lower conversion energy for high value-added GNA.Efficient hydrogen evolution and glucose conversion indicate its high intrinsic activity and synergetic effect.This work provides a special interface construction strategy for the catalytic conversion of hydrogen and small molecules. 展开更多
关键词 ELECTROCATALYSIS Glucose oxidation Hydrogen evolution Multilevel structure Synergetic effect
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Using multi-scale interaction mechanisms in yolk-shell structured C/Co composite materials for electromagnetic wave absorption
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作者 Jintang Zhou Kexin Zou +11 位作者 Jiaqi Tao Jun Liu Yijie Liu Lvtong Duan Zhenyu Cheng Borui Zha Zhengjun Yao Guiyu Peng Xuewei Tao Hexia Huang Yao Ma Peijiang Liu 《Journal of Materials Science & Technology》 2025年第12期36-44,共9页
Advanced chemical engineering for simultaneous modulation of nanomaterial morphology, defects, interfaces, and structure to enhance electromagnetic and microwave absorption (MA) performance. However, accurately distin... Advanced chemical engineering for simultaneous modulation of nanomaterial morphology, defects, interfaces, and structure to enhance electromagnetic and microwave absorption (MA) performance. However, accurately distinguishing the MA contributions of different scale factors and tuning the optimal combined effects remains a formidable challenge. This study employs a synergistic approach combining template protection etching and vacuum annealing to construct a controlled system of micrometer-sized cavities and amorphous carbon matrices in metal-organic framework (MOF) derivatives. The results demonstrate that the spatial effects introduced by the hollow structure enhance dielectric loss but significantly weaken impedance matching. By increasing the proportion of amorphous carbon, the balance between electromagnetic loss and impedance matching can be effectively maintained. Importantly, in a suitable graphitization environment, the presence of oxygen vacancies in amorphous carbon can induce significant polarization to compensate for the reduced conductivity loss due to the absence of sp2 carbon. Through the synergistic effects of morphology and composition, the samples exhibit a broader absorption bandwidth (6.28 GHz) and stronger reflection loss (−61.64 dB) compared to the original MOF. In conclusion, this study aims to elucidate the multiscale impacts of macroscopic micro-nano structure and microscopic defect engineering, providing valuable insights for future research in this field. 展开更多
关键词 MOFS Multi-scale regulation Yolk-shell structure Amorphous carbon Oxygen vacancy Microwave absorption
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