A host of studies found waist-to-height ratio(WHtR)having higher diagnostic value than other abdominal obesity anthropometric indicators for metabolic disorders.But the cut-off points are still not consistent.This stu...A host of studies found waist-to-height ratio(WHtR)having higher diagnostic value than other abdominal obesity anthropometric indicators for metabolic disorders.But the cut-off points are still not consistent.This study was aimed to explore the optimal cut-off point of WHtR in Chinese population and identify the association between WHtR and cluster of metabolic risk factors.In total,13379 Han adults(7553 men and 5726 women)from over 40 institutions who took physical examination in Xuanwu Hospital of Capital Medical University between January 2014 and January 2015 were involved in this cross-sectional study.Subjects with two or more components of metabolic syndrome(MetS)were considered to have multiple risk factors.Optimal cut-off points of WHtR for cluster of metabolic risk factors were analyzed by receiver operating characteristic(ROC)curve analysis.The optimal cut-off points of WHtR were 0.51 for men and 0.49 for women.People with elevated WHtR had higher levels of metabolic risk factors.And the prevalence of individual and clusters of 5 risk factors were all higher among WHtR-defined abdominal obesity people than in normal subjects.The optimal cut-off points of WHtR were 0.51 for men and 0.49 for women.In conclusion,people with elevated WHtR.are susceptible to cluster of metabolic risk factors.展开更多
Sixth Generation(6G)mobile communication networks will involve sensing as a new function,with the overwhelming trend of Integrated Sensing And Communications(ISAC).Although expanding the serving range of the networks,...Sixth Generation(6G)mobile communication networks will involve sensing as a new function,with the overwhelming trend of Integrated Sensing And Communications(ISAC).Although expanding the serving range of the networks,there exists performance trade-offbetween communication and sensing,in that they have competitions on the physical resources.Different resource allocation schemes will result in different sensing and communication performance,thus influencing the system’s overall performance.Therefore,how to model the system’s overall performance,and how to optimize it are key issues for ISAC.Relying on the large-scale deployment of the networks,cooperative ISAC has the advantages of wider coverage,more robust performance and good compatibility of multiple monostatic and multistatic sensing,compared to the non-cooperative ISAC.How to capture the performance gain of cooperation is a key issue for cooperative ISAC.To address the aforementioned vital problems,in this paper,we analyze the sensing accuracy gain,propose a unified ISAC performance evaluation framework and design several optimization methods in cooperative ISAC systems.The cooperative sensing accuracy gain is theoretically analyzed via Cramér Rao lower bound.The unified ISAC performance evaluation model is established by converting the communication mutual information to the effective minimum mean squared error.To optimize the unified ISAC performance,we design the optimization algorithms considering three factors:base stations’working modes,power allocation schemes and waveform design.Through simulations,we show the performance gain of the cooperative ISAC system and the effectiveness of the proposed optimization methods.展开更多
The mechanisms of enhancing spin-orbit torque(SOT) have attracted significant attention, particularly regarding the influence of extrinsic scattering mechanisms on SOT efficiency, as they complement intrinsic contribu...The mechanisms of enhancing spin-orbit torque(SOT) have attracted significant attention, particularly regarding the influence of extrinsic scattering mechanisms on SOT efficiency, as they complement intrinsic contributions. In multilayer systems, extrinsic interfacial scattering, along with scattering from defects or impurities inside the materials, plays a crucial role in affecting the SOT efficiency. In this study, we successfully fabricated high-quality epitaxially grown [Ir/Pt]N superlattices with an increasing number of interfaces using a magnetron sputtering system to investigate the contribution of extrinsic interfacial scattering to SOT efficiency. We measured SOT efficiency through spin-torque ferromagnetic resonance methods and determined the spin Hall angle using the spin pumping technique. Additionally, we calculated spin transparency based on the SOT efficiency and spin Hall angle. Our findings indicate that the values of SOT efficiency, spin Hall angle, and spin transparency are enhanced in the superlattice structure compared to Pt, which we attribute to the increase in interfacial scattering.This research offers an effective strategy for designing and fabricating advanced spintronic devices.展开更多
Barley(Hordeum vulgare L.)ranks as the fourth most cultivated cereal crop globally by planting area.Kernel characteristics,including grain length,grain width,and thousand-grain weight(TGW),are essential determinants o...Barley(Hordeum vulgare L.)ranks as the fourth most cultivated cereal crop globally by planting area.Kernel characteristics,including grain length,grain width,and thousand-grain weight(TGW),are essential determinants of barley yield and quality.The identification and cloning of genes related to kernel traits,along with the detection of superior alleles,are fundamental for marker-assisted selection in barley breeding.This study presents the cloning of HvGL7-2H from barley,based on the known rice GL7 gene.The functional significance of HvGL7-2H in grain length was confirmed through ethyl methane sulfonate(EMS)mutants of the barley landrace“Hatiexi”.A candidate gene-based association analysis was conducted using a panel of 363 barley accessions to identify superior haplotypes for HvGL7-2H.The analysis revealed that Hap3 represented the superior haplotype for both grain length and TGW,while Hap4 emerged as the superior haplotype for TGW.These findings indicate that genotypes carrying the superior allele serve as valuable genetic resources,and the molecular markers identified herein will facilitate grain size and yield improvement in barley breeding programs.展开更多
Medicinal and dietary plants provide numerous nutritional and functional compounds and also have various potential health benefits to humanity.The specific and efficient techniques for accurate identification of nutri...Medicinal and dietary plants provide numerous nutritional and functional compounds and also have various potential health benefits to humanity.The specific and efficient techniques for accurate identification of nutritional compounds and functional metabolites is crucial for the development of functional foods from medicinal and dietary plants.Nuclear magnetic resonance(NMR)and mass spectrometry(MS)are indispensable and essential technologies that provide an unsurpassed wealth of untargeted identification,quantitative and qualitative analysis,and structural information in the study of food and plant products.In the past decade,the rapid development of modern analytical technology has led to the emergence of new approaches and strategies for natural products discovery.Especially the application of novel NMRand MS-based identification and dereplication strategies aided by artificial intelligence and machine learning algorithms have brought about a significant shift in the natural products discovery process.These developments and changes in the natural products filed have given us insights into how to accurately target and mining nutritional,functional,and bioactive compounds.Thus,we have summarized recent research on novel NMR and MS based strategies and methods focusing on functional compounds,accurate identification and efficient discovery mainly in medicinal and dietary plants.This review could provide a comprehensive perspective for a better understanding of novel strategies and methods based on NMR and MS technologies,which could provide valuable insights and ideas for functional compounds mining.展开更多
Background: Cancer-related fatigue(CRF) is a significant burden for patients with advanced lung cancer. While exercise is recommended for managing CRF during pre-and active treatment phases, evidence supporting its ef...Background: Cancer-related fatigue(CRF) is a significant burden for patients with advanced lung cancer. While exercise is recommended for managing CRF during pre-and active treatment phases, evidence supporting its efficacy in advanced stage remains limited. This systematic review and meta-analysis aimed to quantify the effects of exercise on CRF and its common complications in patients with advanced lung cancer.Methods: A systematic search of 4 databases(Pub Med, Embase, Cochrane, and Web of Science) was conducted up to July 10, 2024 to identify relevant randomized controlled trials(RCTs). Studies were selected based on predefined eligibility criteria, including adult patients with advanced lung cancer reporting fatigue as an outcome. Study selection followed Preferred Reporting Items for Systematic Reviews and MetaAnalyses(PRISMA) 2020 guidelines, and the risk of bias was assessed using the Cochrane Risk of Bias tool(Ro B 2.0). The quality of evidence was evaluated with the Grading of Recommendations Assessment, Development and Evaluation(GRADE) system. Random-or fixed-effects models were used for meta-analyses based on heterogeneity levels.Results: Eight RCTs involving 749 patients were included. Meta-analysis revealed that exercise significantly improved CRF in patients with advanced lung cancer(standardized mean difference(SMD) =-0.33;95% confidence interval(95%CI):-0.54 to-0.12);p = 0.00;I2= 0.00%).Subgroup analysis showed greater efficacy in patients aged ≤60 years(p = 0.028), those engaging in traditional Chinese exercise(p = 0.003),and interventions lasting fewer than 12 weeks(p = 0.017). Exercise also significantly improved quality of life(SMD = 0.29;95%CI: 0.02-0.55;p = 0.04;I2= 0.00%) and reduced dyspnea(SMD =-0.43;95%CI:-0.71 to-0.16;p = 0.00;I2= 0.00%). No significant effects were observed on sleep quality, anxiety, or depression. The risk of bias across studies was moderate, and the quality of evidence, as evaluated by GRADE, was rated as low due to study limitations. Adverse events were minimal, with only one mild, exercise-related event reported.Conclusion: Exercise significantly alleviates CRF in patients with advanced lung cancer, improves certain complications, and enhances quality of life. The intervention's effectiveness varies by age, type of exercise, and duration. Further high-quality studies are needed to validate these findings.展开更多
Rechargeable aqueous zinc-metal batteries (AZMBs) are promising candidates for large-scale energy storage systems due to their low cost and high safety.However,their performance and sustainability are significantly hi...Rechargeable aqueous zinc-metal batteries (AZMBs) are promising candidates for large-scale energy storage systems due to their low cost and high safety.However,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn(H_(2)O)_(6)^(2+)solvation shell.Herein,learnt from self-generated solid electrolyte interphase (SEI) in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface (ZNB@Zn),acting as a rapid desolvation promotor.The zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical calculations.Consequently,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility (99.54%) even under high current density and depth of discharge conditions.Meanwhile,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g^(-1)and outstanding rate performance up to 10 A g^(-1).The large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.展开更多
Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of...Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of[Zn(H2O)6]^(2+)and the massive release of active water at the electrolyte/electrode interface.In this review,we briefly outline the solvation structure of zinc ions and the necessity of desolvation.Subsequently,the variety of strategies to solve these issues,mainly including reorganizing solvation sheath by changing electrolyte environment and accelerating interface desolvation by constructing artificial interfacial layer,are categorically discussed and systematically summarized.Meanwhile,perspectives and suggestions regarding desolvation theories,interfacial evolution,material design and analysis techniques are proposed to design highly stable zinc anodes.展开更多
Perovskites have garnered significant attention in recent years. However, the presence of La atoms at the B-site in ABX_(3) structures has not yet been observed. Under high pressure, perovskites exhibit unexpected pha...Perovskites have garnered significant attention in recent years. However, the presence of La atoms at the B-site in ABX_(3) structures has not yet been observed. Under high pressure, perovskites exhibit unexpected phase transitions. In this study, we report the discovery of SbLaO_(3) under ambient pressure, with a space group of R3m. Mechanical property calculations indicate that it is a brittle material, and it possesses a band gap of 4.0266 e V, classifying it as an insulator.We also investigate the phase at 300 GPa, where the space group shifts to P2_(1/m). Additionally, the P2_(1/m) phase of LaInO_(3) under 300 GPa is explored. Ab initio molecular dynamics calculations reveal that the melting point of SbLaO_(3) is exceptionally high. The inclusion of Sb alters the electronic structure compared with LaInO_(3), and the Vickers hardness(H_(v)) is estimated to reach 20.97 GPa. This research provides insights into the phase transitions of perovskites under high pressure.展开更多
Recently,a breakthrough in the high-pressure synthesis of sp^(3)-bonded clathrate-like R-3m-L_(a)B_(8)featuring Latrapped B_(26)cages was achieved.Although the superconducting critical temperature(T_(c))and Vickers ha...Recently,a breakthrough in the high-pressure synthesis of sp^(3)-bonded clathrate-like R-3m-L_(a)B_(8)featuring Latrapped B_(26)cages was achieved.Although the superconducting critical temperature(T_(c))and Vickers hardness(H_(v))of L_(a)B_(8)were estimated,the anisotropic superconductivity and superconducting gap nature remain unclear.The stability of pure B_(26)cages under ambient conditions is of interest for exploring the B_(26)hardness and the role of La atoms in the L_(a)B_(8)hardness.By resolving the Allen–Dynes modified Mc Millan equation and the anisotropic Eliashberg equations,it was found that L_(a)B_(8)exhibits anisotropic single-gap superconductivity with T_(c)=19.0~26.5 K,and the superconducting gap anisotropic ratio reaches 48.50%at 5 K.Most significantly,our work fundamentally validated the coupling of B-2p orbitals with the optical double-degenerate E_(g)phonon modes and A_(g)phonon mode from a novel perspective.The H_(v)of B_(26)cages was determined to be 18.6 GPa,which is lower than that of La-trapped B_(26)cages(i.e.,L_(a)B_(8)),indicating that La acts as a hardness enhancer for L_(a)B_(8).展开更多
基金the National Natural Science Foundation of China(No.81573214)the Beijing Natural Science Foundation of China(No.7162020)the Scientific Research Project of Beijing Municipal Educational Committee of China(No.KM201510025006).
文摘A host of studies found waist-to-height ratio(WHtR)having higher diagnostic value than other abdominal obesity anthropometric indicators for metabolic disorders.But the cut-off points are still not consistent.This study was aimed to explore the optimal cut-off point of WHtR in Chinese population and identify the association between WHtR and cluster of metabolic risk factors.In total,13379 Han adults(7553 men and 5726 women)from over 40 institutions who took physical examination in Xuanwu Hospital of Capital Medical University between January 2014 and January 2015 were involved in this cross-sectional study.Subjects with two or more components of metabolic syndrome(MetS)were considered to have multiple risk factors.Optimal cut-off points of WHtR for cluster of metabolic risk factors were analyzed by receiver operating characteristic(ROC)curve analysis.The optimal cut-off points of WHtR were 0.51 for men and 0.49 for women.People with elevated WHtR had higher levels of metabolic risk factors.And the prevalence of individual and clusters of 5 risk factors were all higher among WHtR-defined abdominal obesity people than in normal subjects.The optimal cut-off points of WHtR were 0.51 for men and 0.49 for women.In conclusion,people with elevated WHtR.are susceptible to cluster of metabolic risk factors.
文摘Sixth Generation(6G)mobile communication networks will involve sensing as a new function,with the overwhelming trend of Integrated Sensing And Communications(ISAC).Although expanding the serving range of the networks,there exists performance trade-offbetween communication and sensing,in that they have competitions on the physical resources.Different resource allocation schemes will result in different sensing and communication performance,thus influencing the system’s overall performance.Therefore,how to model the system’s overall performance,and how to optimize it are key issues for ISAC.Relying on the large-scale deployment of the networks,cooperative ISAC has the advantages of wider coverage,more robust performance and good compatibility of multiple monostatic and multistatic sensing,compared to the non-cooperative ISAC.How to capture the performance gain of cooperation is a key issue for cooperative ISAC.To address the aforementioned vital problems,in this paper,we analyze the sensing accuracy gain,propose a unified ISAC performance evaluation framework and design several optimization methods in cooperative ISAC systems.The cooperative sensing accuracy gain is theoretically analyzed via Cramér Rao lower bound.The unified ISAC performance evaluation model is established by converting the communication mutual information to the effective minimum mean squared error.To optimize the unified ISAC performance,we design the optimization algorithms considering three factors:base stations’working modes,power allocation schemes and waveform design.Through simulations,we show the performance gain of the cooperative ISAC system and the effectiveness of the proposed optimization methods.
基金financially supported by the Science Center of the National Science Foundation of China (Grant No. 52088101)the National Natural Science Foundation of China (Grant Nos. 52161160334, 12274437, 12174426, and 52271237)+1 种基金the Chinese Academy of Sciences (CAS) Project for Young Scientists in Basic Research No. YSBR-084the CAS Youth Interdisciplinary Team。
文摘The mechanisms of enhancing spin-orbit torque(SOT) have attracted significant attention, particularly regarding the influence of extrinsic scattering mechanisms on SOT efficiency, as they complement intrinsic contributions. In multilayer systems, extrinsic interfacial scattering, along with scattering from defects or impurities inside the materials, plays a crucial role in affecting the SOT efficiency. In this study, we successfully fabricated high-quality epitaxially grown [Ir/Pt]N superlattices with an increasing number of interfaces using a magnetron sputtering system to investigate the contribution of extrinsic interfacial scattering to SOT efficiency. We measured SOT efficiency through spin-torque ferromagnetic resonance methods and determined the spin Hall angle using the spin pumping technique. Additionally, we calculated spin transparency based on the SOT efficiency and spin Hall angle. Our findings indicate that the values of SOT efficiency, spin Hall angle, and spin transparency are enhanced in the superlattice structure compared to Pt, which we attribute to the increase in interfacial scattering.This research offers an effective strategy for designing and fabricating advanced spintronic devices.
基金financially supported by the National Natural Science Foundation of China(31771774)the National Key Research and Development Program of China(2018YFD1000700 and 2018YFD1000706)+1 种基金the Young Top-notch Talent Cultivation Program of Hubei Province,Hubei Hongshan Laboratory,Chinathe China Agriculture Research System of Ministry of Agriculture and Rural Affairs(CARS-05).
文摘Barley(Hordeum vulgare L.)ranks as the fourth most cultivated cereal crop globally by planting area.Kernel characteristics,including grain length,grain width,and thousand-grain weight(TGW),are essential determinants of barley yield and quality.The identification and cloning of genes related to kernel traits,along with the detection of superior alleles,are fundamental for marker-assisted selection in barley breeding.This study presents the cloning of HvGL7-2H from barley,based on the known rice GL7 gene.The functional significance of HvGL7-2H in grain length was confirmed through ethyl methane sulfonate(EMS)mutants of the barley landrace“Hatiexi”.A candidate gene-based association analysis was conducted using a panel of 363 barley accessions to identify superior haplotypes for HvGL7-2H.The analysis revealed that Hap3 represented the superior haplotype for both grain length and TGW,while Hap4 emerged as the superior haplotype for TGW.These findings indicate that genotypes carrying the superior allele serve as valuable genetic resources,and the molecular markers identified herein will facilitate grain size and yield improvement in barley breeding programs.
基金financially supported by the National Key R&D Program of China(2022YFF1100301)Major Science and Technology Project of Henan Province(231100310200)+1 种基金National Natural Science Foundation of China(32370426)Yunnan Province Science and Technology Department(202305AH340005),and Dr Plant。
文摘Medicinal and dietary plants provide numerous nutritional and functional compounds and also have various potential health benefits to humanity.The specific and efficient techniques for accurate identification of nutritional compounds and functional metabolites is crucial for the development of functional foods from medicinal and dietary plants.Nuclear magnetic resonance(NMR)and mass spectrometry(MS)are indispensable and essential technologies that provide an unsurpassed wealth of untargeted identification,quantitative and qualitative analysis,and structural information in the study of food and plant products.In the past decade,the rapid development of modern analytical technology has led to the emergence of new approaches and strategies for natural products discovery.Especially the application of novel NMRand MS-based identification and dereplication strategies aided by artificial intelligence and machine learning algorithms have brought about a significant shift in the natural products discovery process.These developments and changes in the natural products filed have given us insights into how to accurately target and mining nutritional,functional,and bioactive compounds.Thus,we have summarized recent research on novel NMR and MS based strategies and methods focusing on functional compounds,accurate identification and efficient discovery mainly in medicinal and dietary plants.This review could provide a comprehensive perspective for a better understanding of novel strategies and methods based on NMR and MS technologies,which could provide valuable insights and ideas for functional compounds mining.
基金supported by funding from the National Key Research and Development Program of China(Research Project of Modernization on TCM,Grant number:2018YFC1707406)。
文摘Background: Cancer-related fatigue(CRF) is a significant burden for patients with advanced lung cancer. While exercise is recommended for managing CRF during pre-and active treatment phases, evidence supporting its efficacy in advanced stage remains limited. This systematic review and meta-analysis aimed to quantify the effects of exercise on CRF and its common complications in patients with advanced lung cancer.Methods: A systematic search of 4 databases(Pub Med, Embase, Cochrane, and Web of Science) was conducted up to July 10, 2024 to identify relevant randomized controlled trials(RCTs). Studies were selected based on predefined eligibility criteria, including adult patients with advanced lung cancer reporting fatigue as an outcome. Study selection followed Preferred Reporting Items for Systematic Reviews and MetaAnalyses(PRISMA) 2020 guidelines, and the risk of bias was assessed using the Cochrane Risk of Bias tool(Ro B 2.0). The quality of evidence was evaluated with the Grading of Recommendations Assessment, Development and Evaluation(GRADE) system. Random-or fixed-effects models were used for meta-analyses based on heterogeneity levels.Results: Eight RCTs involving 749 patients were included. Meta-analysis revealed that exercise significantly improved CRF in patients with advanced lung cancer(standardized mean difference(SMD) =-0.33;95% confidence interval(95%CI):-0.54 to-0.12);p = 0.00;I2= 0.00%).Subgroup analysis showed greater efficacy in patients aged ≤60 years(p = 0.028), those engaging in traditional Chinese exercise(p = 0.003),and interventions lasting fewer than 12 weeks(p = 0.017). Exercise also significantly improved quality of life(SMD = 0.29;95%CI: 0.02-0.55;p = 0.04;I2= 0.00%) and reduced dyspnea(SMD =-0.43;95%CI:-0.71 to-0.16;p = 0.00;I2= 0.00%). No significant effects were observed on sleep quality, anxiety, or depression. The risk of bias across studies was moderate, and the quality of evidence, as evaluated by GRADE, was rated as low due to study limitations. Adverse events were minimal, with only one mild, exercise-related event reported.Conclusion: Exercise significantly alleviates CRF in patients with advanced lung cancer, improves certain complications, and enhances quality of life. The intervention's effectiveness varies by age, type of exercise, and duration. Further high-quality studies are needed to validate these findings.
基金National Key R&D Program of China (2021YFA1201503)National Natural Science Foundation of China (21972164, 22279161, 12264038, 22309144)+4 种基金Natural Science Foundation of Jiangsu Province (BK. 20210130)China Postdoctoral Science Foundation (2023M733189)Jiangsu Double-Innovation PhD Program in 2022 (JSSCBS20221241)Senior Talents Fund of Jiangsu University (5501220014)fellowship funding provided by the Alexander von Humboldt Foundation。
文摘Rechargeable aqueous zinc-metal batteries (AZMBs) are promising candidates for large-scale energy storage systems due to their low cost and high safety.However,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn(H_(2)O)_(6)^(2+)solvation shell.Herein,learnt from self-generated solid electrolyte interphase (SEI) in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface (ZNB@Zn),acting as a rapid desolvation promotor.The zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical calculations.Consequently,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility (99.54%) even under high current density and depth of discharge conditions.Meanwhile,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g^(-1)and outstanding rate performance up to 10 A g^(-1).The large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.
基金financially supported by the National Key Research and Development Program of China(2021YFA1201503)National Natural Science Foundation of China(No.21972164,22279161,and 22309144)+8 种基金the Natural Science Foundation of Jiangsu Province(BK.20210130)Shanghai Sailing Program of China(23YF1408900)China Postdoctoral Science Foundation(No.2024M762318,2023M731084,and 2023M732561)Suzhou Science and Technology Plan project(SYC2022057)Innovative and Entrepreneurial Doctor in Jiangsu Province(JSSCBS20211428)Opening funding from Key Laboratory of Engineering Dielectrics and Its Application(Harbin University of Science and Technology)(No.KFM202507,Ministry of Education)the funding provided by the Alexander von Humboldt Foundationthe Shanghai Super Postdoctoral Incentive Programthe support from Nano-X,Suzhou Institute of Nano-tech and Nano-bionics,Chinese Academy of Sciences.
文摘Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of[Zn(H2O)6]^(2+)and the massive release of active water at the electrolyte/electrode interface.In this review,we briefly outline the solvation structure of zinc ions and the necessity of desolvation.Subsequently,the variety of strategies to solve these issues,mainly including reorganizing solvation sheath by changing electrolyte environment and accelerating interface desolvation by constructing artificial interfacial layer,are categorically discussed and systematically summarized.Meanwhile,perspectives and suggestions regarding desolvation theories,interfacial evolution,material design and analysis techniques are proposed to design highly stable zinc anodes.
基金Project supported by the National Natural Science Foundation of China (Grant No. 11904067)。
文摘Perovskites have garnered significant attention in recent years. However, the presence of La atoms at the B-site in ABX_(3) structures has not yet been observed. Under high pressure, perovskites exhibit unexpected phase transitions. In this study, we report the discovery of SbLaO_(3) under ambient pressure, with a space group of R3m. Mechanical property calculations indicate that it is a brittle material, and it possesses a band gap of 4.0266 e V, classifying it as an insulator.We also investigate the phase at 300 GPa, where the space group shifts to P2_(1/m). Additionally, the P2_(1/m) phase of LaInO_(3) under 300 GPa is explored. Ab initio molecular dynamics calculations reveal that the melting point of SbLaO_(3) is exceptionally high. The inclusion of Sb alters the electronic structure compared with LaInO_(3), and the Vickers hardness(H_(v)) is estimated to reach 20.97 GPa. This research provides insights into the phase transitions of perovskites under high pressure.
基金supported by the National Natural Science Foundation of China(Grant Nos.11904067,12122405,52072188,1227416951632002)。
文摘Recently,a breakthrough in the high-pressure synthesis of sp^(3)-bonded clathrate-like R-3m-L_(a)B_(8)featuring Latrapped B_(26)cages was achieved.Although the superconducting critical temperature(T_(c))and Vickers hardness(H_(v))of L_(a)B_(8)were estimated,the anisotropic superconductivity and superconducting gap nature remain unclear.The stability of pure B_(26)cages under ambient conditions is of interest for exploring the B_(26)hardness and the role of La atoms in the L_(a)B_(8)hardness.By resolving the Allen–Dynes modified Mc Millan equation and the anisotropic Eliashberg equations,it was found that L_(a)B_(8)exhibits anisotropic single-gap superconductivity with T_(c)=19.0~26.5 K,and the superconducting gap anisotropic ratio reaches 48.50%at 5 K.Most significantly,our work fundamentally validated the coupling of B-2p orbitals with the optical double-degenerate E_(g)phonon modes and A_(g)phonon mode from a novel perspective.The H_(v)of B_(26)cages was determined to be 18.6 GPa,which is lower than that of La-trapped B_(26)cages(i.e.,L_(a)B_(8)),indicating that La acts as a hardness enhancer for L_(a)B_(8).
