The spinodal decomposition method emerges as a promising methodology,showcasing its potential in exploring the design space for metamaterial structures.However,spinodal structures design is still largely limited to re...The spinodal decomposition method emerges as a promising methodology,showcasing its potential in exploring the design space for metamaterial structures.However,spinodal structures design is still largely limited to regular structures,due to their relatively easy parameterization and controllability.Efficiently predicting the mechanical properties of 3D spinodal membrane structure remains a challenge,given that the features of the membrane necessitate adaptive mesh through the modelling process.This paper proposes an integrated approach for morphological design with customized mechanical properties,incorporating the spinodal decomposition method and adaptive coarse-grained modeling,which can produce various morphologies such as lamellar,columnar,and cubic structures.Pseudo-periodic parameterβand orientational parameterΘ(θ_(1),θ_(2),θ_(3))are identified to achieve the optimal goal of anisotropic mechanical properties.Parametric analysis is conducted to reveal the correlation between the customized spinodal structure and mechanical performance.Our work provides an integrated approach for morphological variation and tuning mechanical properties,paving the way for the design and development of customized functional materials similar to 3D spinodal membrane structures.展开更多
Poor conductivity,sluggish ion diffusion kinetics and short cycle life hinder the further development of manganese oxide in aqueous zinc-ion batteries(AZIBs).Exploring a cathode with high capacity and long cycle life ...Poor conductivity,sluggish ion diffusion kinetics and short cycle life hinder the further development of manganese oxide in aqueous zinc-ion batteries(AZIBs).Exploring a cathode with high capacity and long cycle life is critical to the commercial development of AZIBs.Herein,a two-dimensional(2D) MnO/C composite derived from metal organic framework(MOF) was prepared.The 2D MnO/C cathode exhibits a remarkably cyclic stability with the capacity retention of 90.6% after 900 cycles at 0.5 A·g^(-1) and maintains a high capacity of 120.2 mAh·g^(-1)after 4500 cycles at 1.0 A·g^(-1).It is demonstrated that MnO is converted into Mn_(3)O_(4) through electrochemical activation strategy and shows a Zn^(2+)and H^(+)co-intercalation mechanism.In general,this work provides a new path for the development of high-performance AZIBs cathode with controllable morphology.展开更多
Zinc ion hybrid capacitors(ZIHCs)are emerging electrochemical energy storage devices with the dual characteristics of high energy density and high power density.However,the mismatch of capacity and electrode kinetics ...Zinc ion hybrid capacitors(ZIHCs)are emerging electrochemical energy storage devices with the dual characteristics of high energy density and high power density.However,the mismatch of capacity and electrode kinetics between porous carbon cathodes and zinc metal anodes limits the development of ZIHCs.Lignin has high carbon content,high aromaticity,and three-dimensional functional molecular structures,which is an ideal raw material for preparing high-performance porous carbon electrode materials with high carbon yield,conductive carbon network and enriched heteroatom dopants.Currently,the high-value utilization ratio of industrial lignin is lower than 10%.In this review,the typical preparation methodologies of lignin-derived porous carbons are summarized.The latest research advances for the lignin-derived porous carbon cathodes in ZIHCs are critically focused from the perspectives of pore regulation,surface modification,and morphology design.The core points and development directions that lignin-derived porous carbon cathodes are expected to achieve an original breakthrough in the future are proposed from three levels of techniques,mechanisms,and applications.This review fills the blank region in the applications of lignin-derived porous carbons for ZIHCs,aiming to provide valuable guidance for the high-value utilization process of lignin and the industrialization process of ZIHCs.展开更多
Diverse interactions between microwaves and irradiated media provide a solid foundation for identifying novel organization pathways for energy flow.In this study,a high-energy-site phenomenon and targeted-energy trans...Diverse interactions between microwaves and irradiated media provide a solid foundation for identifying novel organization pathways for energy flow.In this study,a high-energy-site phenomenon and targeted-energy transition mechanism were identified in a particular microwave heating(MH)process.Intense discharges were observed when microwaves were imposed on irregularly sized SiC particles,producing tremendous heat that was 8-fold the amount generated in the discharge-free case.Energy efficiency was thereby greatly improved in the electricity-microwaves-effective heat transition.Meanwhile,the dispersed microwave field energy concentrated in small sites,where local temperatures could reach 2000℃–4000℃,with the energy density reaching up to 4.010^(5) W/kg.This can be called a high-energy site phenomenon which could induce further processes or reactions enhancement by coupling effects of heat,light,and plasma.The whole process,including microwave energy concentration and intense site-energy release,shapes a targeted-energy transition mechanism that can be optimized in a controlled manner through morphology design.In particular,the discharge intensity,frequency,and high-energy sites were strengthened through the fabrication of sharp nano/microstructures,conferring twice the energy efficiency of untreated metal wires.The microwave-induced high-energy sites and targeted energy transition provide an important pathway for high-efficiency energy deployment and may lead to promising applications.展开更多
The performance of Aquatic Unmanned Aerial Vehicle(AquaUAV)has always been limited so far and far from practical applications,due to insufficient propulsion,large-resistance structure etc.Aerial-aquatic amphibians in ...The performance of Aquatic Unmanned Aerial Vehicle(AquaUAV)has always been limited so far and far from practical applications,due to insufficient propulsion,large-resistance structure etc.Aerial-aquatic amphibians in nature may facilitate the development of AquaUAV since their excellent amphibious locomotion capabilities evolved under long-term natural selection.This article will take four typical aerial-aquatic amphibians as representatives,i.e.,gannet,cormorant,flying fish and flying squid.We summarized the multi-mode locomotion process of common aerial-aquatic amphibians and the evolutionary trade-offs they have made to adapt to amphibious environments.The four typical propulsion mechanisms were investigated,which may further inspire the propulsion design of the AquaUAV.And their morphological models could guide the layout optimization.Finally,we reviewed the state of art in AquaUAV to validate the potential value of our bioinspiration,and discussed the futureprospects.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.11872278)the Science and Technology Commission of Shanghai Municipality(Grant No.21ZR1467200)the Fundamental Research Funds for the Central Universities.
文摘The spinodal decomposition method emerges as a promising methodology,showcasing its potential in exploring the design space for metamaterial structures.However,spinodal structures design is still largely limited to regular structures,due to their relatively easy parameterization and controllability.Efficiently predicting the mechanical properties of 3D spinodal membrane structure remains a challenge,given that the features of the membrane necessitate adaptive mesh through the modelling process.This paper proposes an integrated approach for morphological design with customized mechanical properties,incorporating the spinodal decomposition method and adaptive coarse-grained modeling,which can produce various morphologies such as lamellar,columnar,and cubic structures.Pseudo-periodic parameterβand orientational parameterΘ(θ_(1),θ_(2),θ_(3))are identified to achieve the optimal goal of anisotropic mechanical properties.Parametric analysis is conducted to reveal the correlation between the customized spinodal structure and mechanical performance.Our work provides an integrated approach for morphological variation and tuning mechanical properties,paving the way for the design and development of customized functional materials similar to 3D spinodal membrane structures.
基金financially supported by the National Natural Science Foundation of China (Nos.22078200 and 51874199)Guangdong Basic and Applied Basic Research Foundation (No.2021A1515010162)。
文摘Poor conductivity,sluggish ion diffusion kinetics and short cycle life hinder the further development of manganese oxide in aqueous zinc-ion batteries(AZIBs).Exploring a cathode with high capacity and long cycle life is critical to the commercial development of AZIBs.Herein,a two-dimensional(2D) MnO/C composite derived from metal organic framework(MOF) was prepared.The 2D MnO/C cathode exhibits a remarkably cyclic stability with the capacity retention of 90.6% after 900 cycles at 0.5 A·g^(-1) and maintains a high capacity of 120.2 mAh·g^(-1)after 4500 cycles at 1.0 A·g^(-1).It is demonstrated that MnO is converted into Mn_(3)O_(4) through electrochemical activation strategy and shows a Zn^(2+)and H^(+)co-intercalation mechanism.In general,this work provides a new path for the development of high-performance AZIBs cathode with controllable morphology.
基金supported by the National Natural Science Foundation of China(No.22408061)Natural Science Foundation of Guangxi Province(No.2025GXNSFBA069417)+2 种基金the Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology(No.2023Z014)the Open Foundation of Shanghai Jiao Tong University Shaoxing Research Institute of Renewable Energy and Molecular Engineering(No.JDSX2023002)the financial support from the Program for Introducing High-Level Talents from Guangxi University。
文摘Zinc ion hybrid capacitors(ZIHCs)are emerging electrochemical energy storage devices with the dual characteristics of high energy density and high power density.However,the mismatch of capacity and electrode kinetics between porous carbon cathodes and zinc metal anodes limits the development of ZIHCs.Lignin has high carbon content,high aromaticity,and three-dimensional functional molecular structures,which is an ideal raw material for preparing high-performance porous carbon electrode materials with high carbon yield,conductive carbon network and enriched heteroatom dopants.Currently,the high-value utilization ratio of industrial lignin is lower than 10%.In this review,the typical preparation methodologies of lignin-derived porous carbons are summarized.The latest research advances for the lignin-derived porous carbon cathodes in ZIHCs are critically focused from the perspectives of pore regulation,surface modification,and morphology design.The core points and development directions that lignin-derived porous carbon cathodes are expected to achieve an original breakthrough in the future are proposed from three levels of techniques,mechanisms,and applications.This review fills the blank region in the applications of lignin-derived porous carbons for ZIHCs,aiming to provide valuable guidance for the high-value utilization process of lignin and the industrialization process of ZIHCs.
基金supported by the Natural Science Foundation of Shandong Province(Grant No.ZR2019MEE035)the Key Research and Development Plan of Shandong Province(Grant No.2019GSF109091)+1 种基金the Young Scholars Program of Shandong University(Grant No.2018WLJH75)the International Clean Energy Talent Program(iCET 2019).
文摘Diverse interactions between microwaves and irradiated media provide a solid foundation for identifying novel organization pathways for energy flow.In this study,a high-energy-site phenomenon and targeted-energy transition mechanism were identified in a particular microwave heating(MH)process.Intense discharges were observed when microwaves were imposed on irregularly sized SiC particles,producing tremendous heat that was 8-fold the amount generated in the discharge-free case.Energy efficiency was thereby greatly improved in the electricity-microwaves-effective heat transition.Meanwhile,the dispersed microwave field energy concentrated in small sites,where local temperatures could reach 2000℃–4000℃,with the energy density reaching up to 4.010^(5) W/kg.This can be called a high-energy site phenomenon which could induce further processes or reactions enhancement by coupling effects of heat,light,and plasma.The whole process,including microwave energy concentration and intense site-energy release,shapes a targeted-energy transition mechanism that can be optimized in a controlled manner through morphology design.In particular,the discharge intensity,frequency,and high-energy sites were strengthened through the fabrication of sharp nano/microstructures,conferring twice the energy efficiency of untreated metal wires.The microwave-induced high-energy sites and targeted energy transition provide an important pathway for high-efficiency energy deployment and may lead to promising applications.
基金supported by the National Science Foundation of China(62103035)Beijing Natural Science Foundation(3222016)+1 种基金the China Postdoctoral Science Foundation(2021M690337)the Young Elite Scientists Sponsorship Program by CAST(2022QNRC001)。
文摘The performance of Aquatic Unmanned Aerial Vehicle(AquaUAV)has always been limited so far and far from practical applications,due to insufficient propulsion,large-resistance structure etc.Aerial-aquatic amphibians in nature may facilitate the development of AquaUAV since their excellent amphibious locomotion capabilities evolved under long-term natural selection.This article will take four typical aerial-aquatic amphibians as representatives,i.e.,gannet,cormorant,flying fish and flying squid.We summarized the multi-mode locomotion process of common aerial-aquatic amphibians and the evolutionary trade-offs they have made to adapt to amphibious environments.The four typical propulsion mechanisms were investigated,which may further inspire the propulsion design of the AquaUAV.And their morphological models could guide the layout optimization.Finally,we reviewed the state of art in AquaUAV to validate the potential value of our bioinspiration,and discussed the futureprospects.
