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Journal of Energy Chemistry 2024年第2期89卷 355-363,I0009页

作者： Weibin Chen Yanhui Song Lei Li Junjie Guo zhan lin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Key Laboratory of Interface Science and Engineering in AdvancedMaterials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina

Exploring effective iridium(Ir)-based electrocatalysts with stable iridium centers is highly desirable for oxygen evolution reaction(OER).Herein,we regulated the incorporation manner of Ir in Co_(3)O_(4)support to stabilize the Ir sites for effective OER.When anchored on the surface of Co_(3)O_(4)in the form of Ir(OH)_6 species,the created Ir-OH-Co interface leads to a limited stability and poor acidic OER due to Ir leaching.When doped into Co_(3)O_(4)lattice,the analyses of X-ray absorption spectroscopy,in-situ Raman,and OER measurements show that the partially replacement of Co in Co_(3)O_(4)by Ir atoms inclines to cause strong electronic effect and activate lattice oxygen in the presence of Ir-O-Co interface,and simultaneously master the reconstruction effect to mitigate Ir dissolution,realizing the improved OER activity and stability in alkaline and acidic environments.As a result,Ir_(lat)@Co_(3)O_(4)with Ir loading of 3.67 wt%requires 294±4 mV/285±3 mV and 326±2 mV to deliver 10 mA cm^(-2)in alkaline(0.1 M KOH/1.0 M KOH)and acidic(0.5 M H_(2)SO_(4))solution,respectively,with good stability.

关键词： Interface effect Reconstruction Ir dissolution Ir-O-Co Oxygen evolution reaction

Enhancing thermodynamic stability of single-crystal Ni-rich cathode material via a synergistic dual-substitution strategy

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Journal of Energy Chemistry 2024年第1期88卷 428-436,I0010页

作者： Jixue Shen Hui Li Haoyu Qi zhan lin Zeheng Li Chuanbo Zheng Weitong Du Hao Chen Shanqing zhang School of Metallurgy Engineering Jiangsu University of Science and TechnologyZhangjiagang 215600JiangsuChina School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center Jieyang 515200GuangdongChina Institute of Sustainable Transformation School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Centre for Catalysis and Clean Energy School of Environment and ScienceGold Coast CampusGriffith UniversityGold Coast 4222QueenslandAustralia

Nickel(Ni)-rich cathode materials have become promising candidates for the next-generation electrical vehicles due to their high specific capacity.However,the poor thermodynamic stability(including cyclic performance and safety performance or thermal stability)will restrain their wide commercial application.Herein,a single-crystal Ni-rich Li Ni_(0.83)Co_(0.12)Mn_(0.05)O_(2) cathode material is synthesized and modified by a dual-substitution strategy in which the high-valence doping element improves the structural stability by forming strong metal–oxygen binding forces,while the low-valence doping element eliminates high Li^(+)/Ni^(2+)mixing.As a result,this synergistic dual substitution can effectively suppress H2-H3 phase transition and generation of microcracks,thereby ultimately improving the thermodynamic stability of Ni-rich cathode material.Notably,the dual-doped Ni-rich cathode delivers an extremely high capacity retention of 81%after 250 cycles(vs.Li/Li+)in coin-type half cells and 87%after 1000 cycles(vs.graphite/Li^(+))in pouch-type full cells at a high temperature of 55℃.More impressively,the dual-doped sample exhibits excellent thermal stability,which demonstrates a higher thermal runaway temperature and a lower calorific value.The synergetic effects of this dual-substitution strategy pave a new pathway for addressing the critical challenges of Ni-rich cathode at high temperatures,which will significantly advance the high-energy-density and high-safety cathodes to the subsequent commercialization.

关键词： Ni-rich cathode Single crystalline Dual-substitution strategy High-temperature cathode Li-ion batteries

Systematic engineering of BiVO_(4)photoanode for efficient photoelectrochemical water oxidation

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Carbon Energy 2024年第4期6卷 12-21页

作者： Zhiting Liang Meng Li Kai‐Hang Ye Tongxin Tang zhan lin Yuying Zheng Yongchao Huang Hongbing Ji Shanqing zhang Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina Chemical Engineering Guangdong Laboratory Jieyang Branch of ChemistryJieyangChina Key Laboratory for Water Quality and Conservation of the Pearl River Delta Institute of Environmental Research at Greater Bay AreaMinistry of EducationGuangzhou UniversityGuangzhouChina State Key Laboratory Breeding Base of Green‐Chemical Synthesis Technology Institute of Green Petroleum Processing and Light Hydrocarbon ConversionCollege of Chemical EngineeringZhejiang University of TechnologyHangzhouChina School of Environment and Science Centre for Catalysis and Clean EnergyGriffith UniversityGold Coast CampusSouthportQueenslandAustralia

BiVO_(4)is one of the most promising photoanode materials for photoelectrochemical(PEC)solar energy conversion,but it still suffers from poor photocurrent density due to insufficient light‐harvesting efficiency(LHE),weak photogenerated charge separation efficiency(Φ_(Sep)),and low water oxidation efficiency(Φ_(OX)).Herein,we tackle these challenges of the BiVO_(4)photoanodes using systematic engineering,including catalysis engineering,bandgap engineering,and morphology engineering.In particular,we deposit a NiCoO_(x)layer onto the BiVO_(4)photoanode as the oxygen evolution catalyst to enhance theΦ_(OX)of Fe‐g‐C_(3)N_(4)/BiVO_(4)for PEC water oxidation,and incorporate Fe‐doped graphite‐phase C_(3)N_(4)(Fe‐g‐C_(3)N_(4))into the BiVO_(4)photoanode to optimize the bandgap and surface areas to subsequently expand the light absorption range of the photoanode from 530 to 690 nm,increase the LHE andΦ_(Sep),and further improve the oxygen evolution reaction activity of the NiCoO_(x)catalytic layer.Consequently,the maximum photocurrent density of the as‐prepared NiCoO_(x)/Fe‐g‐C_(3)N_(4)/BiVO_(4)is remarkably boosted from 4.6 to 7.4 mA cm^(−2).This work suggests that the proposed systematic engineering strategy is exceptionally promising for improving LHE,Φ_(Sep),andΦ_(OX)of BiVO_(4)‐based photoanodes,which will substantially benefit the design,preparation,and large‐scale application of next‐generation high‐performance photoanodes.

关键词： bismuth vanadate carbon nitride charge separation heterojunction water oxidation

A Review on the Mullins Effect in Tough Elastomers and Gels

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Acta Mechanica Solida Sinica 2024年第2期37卷 181-214页

作者： lin zhan Shaoxing Qu Rui Xiao MOE Key Lab of Disaster Forecast and Control in Engineering College of Mechanics and Construction EngineeringJinan UniversityGuangzhou510632China State Key Laboratory of Fluid Power and Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering MechanicsZhejiang UniversityHangzhou310027China

Tough elastomers and gels have garnered broad research interest due to their wide-ranging potential applications.However,during the loading and unloading cycles,a clear stress softening behavior can be observed in many material systems,which is also named as the Mullins effect.In this work,we aim to provide a complete review of the Mullins effect in soft yet tough materials,specifically focusing on nanocomposite gels,double-network hydrogels,and multi-network elastomers.We first revisit the experimental observations for these soft materials.We then discuss the recent developments of constitutive models,emphasizing novel developments in the damage mechanisms or network representations.Some phenomenological models will also be briefly introduced.Particular attention is then placed on the anisotropic and multiaxial modeling aspects.It is demonstrated that most of the existing models fail to accurately predict the multiaxial data,posing a significant challenge for developing future anisotropic models tailored for tough gels and elastomers.

关键词： Mullins effect Double-network hydrogels Nanocomposite gels Multi-network elastomers Anisotropic damage model Multiaxial model

Examining the association between delay discounting,delay aversion and physical activity in Chinese adults with type-2 diabetes mellitus

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World Journal of Diabetes 2024年第4期15卷 675-685页

作者： Yong-Dong An Guo-Xia Ma Xing-Kui Cai Ying Yang Fang Wang zhan-lin zhang Department of Endocrinology People's Hospital of Linxia Hui Autonomous PrefectureLinxia Hui Autonomous Prefecture 731100Gansu ProvinceChina Department of Gynecology People's Hospital of Linxia Hui Autonomous PrefectureLinxia Hui Autonomous Prefecture 731100Gansu ProvinceChina The First Clinical Medical College Lanzhou UniversityLanzhou 730013Gansu ProvinceChina Department of Internal Medicine People's Hospital of HezhengLinxia Hui Autonomous Prefecture 731200Gansu ProvinceChina Department of Geratology People's Hospital of Linxia Hui Autonomous PrefectureLinxia Hui Autonomous Prefecture 731100Gansu ProvinceChina Department of Medical People's Hospital of Linxia Hui Autonomous PrefectureLinxia Hui Autonomous Prefecture 731100Gansu ProvinceChina

BACKGROUND The role of physical activity in diabetes is critical,influencing this disease's development,man-agement,and overall outcomes.In China,22.3%of adults do not meet the minimum level of physical activity recommended by the World Health Organization.Therefore,it is imperative to identify the factors that contributing to lack of physical activity must be identified.AIM To investigate the relationship among delay discounting,delay aversion,glycated hemoglobin(HbA1c),and various levels of physical activity in Chinese adults diagnosed with type 2 diabetes mellitus(T2DM).METHODS In 2023,400 adults with T2DM were recruited from the People's Hospital of linxia Hui Autonomous Prefecture of Gansu Province.A face-to-face questionnaire was used to gather demographic data and details on physical activity,delay discounting,and delay aversion.In addition,HbA1c levels were measured in all 400 participants.The primary independent variables considered were delay discounting and delay aversion.The outcome variables included HbA1c levels and different intensity levels of physical activity,including walking,moderate physical activity,and vigorous physical activity.Multiple linear regression models were utilized to assess the relationship between delay discounting,delay aversion,and HbA1c levels,along with the intensity of different physical activity measured in met-hours per week.RESULTS After controlling for the sample characteristics,delay discounting was negatively associated with moderate physical activity(β=-2.386,95%CI:-4.370 to-0.401).Meanwhile,delay aversion was negatively associated with the level of moderate physical activity(β=-3.527,95%CI:-5.578 to-1.476)in the multiple linear regression model,with statistically significant differences.CONCLUSION Elevated delay discounting and increased delay aversion correlated with reduced levels of moderate physical activity.Result suggests that delay discounting and aversion may influence engagement in moderate physical activity.This study recommends that health administration

关键词： Type 2 diabetes mellitus Delay discounting Delay aversion Physical activity

近代乡村土地、收入与消费不平等的综合考察——以满铁调查为例

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清华大学学报（哲学社会科学版） 2024年第3期39卷 94-108,244页

作者：林展中国人民大学清史研究所北京100872

已有对近代乡村不平等的研究主要关注地权分配,很少关注收入、消费分配,特别是同时讨论三者之间的关系。利用满铁调查32个村庄的数据,发现从户均角度看,土地不平等的变动对收入不平等和消费不平等的变动有一定的解释力,收入不平等的变... 详细信息

已有对近代乡村不平等的研究主要关注地权分配,很少关注收入、消费分配,特别是同时讨论三者之间的关系。利用满铁调查32个村庄的数据,发现从户均角度看,土地不平等的变动对收入不平等和消费不平等的变动有一定的解释力,收入不平等的变动对消费不平等的变动则有较大的解释力。但从人均角度看,土地不平等对收入不平等和消费不平等的解释力以及收入不平等对消费不平等的解释力都很有限。另外,也发现土地租佃市场和借贷市场的发展,有助于减少收入和消费的不平等。

关键词：地权分配收入不平等消费不平等基尼系数近代乡村

Low-strain Co-free Li-rich layered cathode with excellent voltage and capacity stability

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Journal of Energy Chemistry 2023年第7期82卷 513-520,I0011页

作者： Zhuo Yao Yong Chen Chenyu Liu Hao Chen Shuxing Wu Dong Luo zhan lin Shanqing zhang Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Centre for Catalysis and Clean Energy School of Environment and ScienceGriffith UniversityGold CoastQLD 4222Australia

Owing to the inherent advantages of low cost and high capacity,cobalt(Co)-free lithium(Li)-rich layered oxides have become one of the most promising cathodes for next-generation high-energy lithium-ion batteries.However,these familial cathodes suffer from serious voltage decay due to many reasons,such as oxygen release and transition metal(TM)migration,which are closely related to nanoscale strain evolution.Here,by combining the synergistic effects of surface integration,bulk doping,and concentration gradient,we successfully construct a Co-free Li-rich layered cathode with a very small volumetric strain(1.05%)between 2.0 and 4.8 V,approaching the critical value of zero strain.Various characterizations indicate that the constructed zero-strain cathode can significantly suppress the TM migration,interfacial reactions,and structural degradation including cracks,lattice defects,phase evolution,and nanovoids,leading to improved voltage stability of Co-free Li-rich layered oxides during the prolonged cycles.This work provides a strategy to eliminate the lattice strain of Li-rich layered cathodes and facilitates the up-scaled application of the as-prepared cathode materials.

关键词： Lithium-rich cathodes Lithium-ion batteriesCobalt free Zero strain Bulk doping Concentration gradient

Cyclohexanedodecol-Assisted Interfacial Engineering for Robust and High-Performance Zinc Metal Anode

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Nano-Micro Letters 2022年第7期14卷 55-71页

作者： Zhenzhen Wu Meng Li Yuhui Tian Hao Chen Shao-Jian zhang Chuang Sun Chengpeng Li Milton Kiefel Chao Lai zhan lin Shanqing zhang Centre for Clean Environment and Energy School of Environment and ScienceGriffith UniversityGold Coast 4222Australia Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116People’s Republic of China Institute for Glycomics Griffith UniversityGold Coast 4222Australia

Aqueous zinc-ion batteries(AZIBs)can be one of the most promising electrochemical energy storage devices for being non-flammable,low-cost,and sustainable.However,the challenges of AZIBs,including dendrite growth,hydrogen evolution,corrosion,and passivation of zinc anode during charging and discharging processes,must be overcome to achieve high cycling performance and stability in practical applications.In this work,we utilize a dual-func-tional organic additive cyclohexanedodecol(CHD)to firstly establish[Zn(H2O)5(CHD)]2+complex ion in an aqueous Zn electrolyte and secondly build a robust protection layer on the Zn surface to overcome these dilemmas.Systematic experiments and theoretical calculations are carried out to interpret the working mechanism of CHD.At a very low concentration of 0.1 mg mL^(−1) CHD,long-term reversible Zn plating/stripping could be achieved up to 2200 h at 2 mA cm^(−2),1000 h at 5 mA cm^(−2),and 650 h at 10 mA cm^(−2) at the fixed capacity of 1 mAh cm^(−2).When matched with V_(2)O_(5) cathode,the resultant AZIBs full cell with the CHD-modified electrolyte presents a high capacity of 175 mAh g^(−1) with the capacity retention of 92%after 2000 cycles under 2 A g^(−1).Such a performance could enable the commercialization of AZIBs for applications in grid energy storage and industrial energy storage.

关键词： Cyclohexanedodecol Aqueous Zn-ion battery Zn dendrite Zn corrosion Hydrogen evolution

Dual-site Doping to Enhance Oxygen Redox and Structural Stability of Li-rich Layered Oxides

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Chinese Journal of Structural Chemistry 2022年第4期41卷 61-67页

作者： Zuhao zhang Xiaoyan Xie Huixian Xie Xiaokai Ding Jiaxiang Cui Chenyu Liu Dong Luo zhan lin Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China

Cobalt-free Li-rich layered oxides(LLOs)such as Li_(2)MnO_(3) have attracted extensive attention owing to their high specific capacity and low cost.Nonetheless,numerous problems such as continuous voltage fading and capacity decay have become stumbling blocks in its commercial application.In this study,we propose an effective dual-site doping strategy by choosing Mo as the cation and F as the anion to enhance the capacity and cycling performance.The researchdemonstrates that the cycling stability of LLOs enhances with the doping ratio of Mo,and their capacity increases with the doping ratio of F.It is because Mo as a pillar enhances the structural stability and F doping is conducive to the activation of Li;MnO;.What’s more,dual-site doping also promotes the diffusion of Li;and reduces the internal resistance of the electrode.Due to these improvements,the 5F3M sample still maintains a discharge capacity of 190.98 mAh g;after 100 cycles at 200 mA g^(-1),which is much higher than 165.29 mAh g;of the Pristine sample.This discovery provides a new way to develop advanced layered oxide cathodes for both Na-and Li-ion batteries.

关键词： lithium-ion battery Li-rich layered oxides doping Li_(2)MnO_(3)

Robust textile-based spoof plasmonic frequency scanning antenna for on-body IoT applications

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Science China(Information Sciences) 2024年

作者： Zhao-Min CHEN Jun-lin zhan Hao CHEN Ya LI Hong-Jun HE Wu YANG Zhen-Guo LIU Wei-Bing LU State Key Lab of Millimeter Waves School of Information Science and EngineeringSoutheast University Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and SecuritySoutheast University Future Research Laboratory China Mobile Research Institute Purple Mountain Laboratories

Securing a comfortable, wearable compact frequency beam scanning antenna(FBSA) with robustness to deformation, low specific absorption rate(SAR), and good coverage of the surrounding environment for Internet of Things(Io T) applications, such as on-body navigation and wireless communication is an emerging challenge. In this work, a robust textile-based spoof plasmonic frequency scanning antenna utilizing higher-order modes is presented, which is also robust to deformation caused by the activities of the human body. The innovative design of the element ensures the high-efficiency transmission of the fundamental mode of spoof surface plasmon polaritons(SSPP) structure, providing the potential of being a multifunctional composite device in the compact on-body network. Besides, an artificial magnetic conductor(AMC) is designed underneath the SSPP structure, obtaining a low SAR value(0.113 W/kg), which ensures the safety of users. As a practical realization of this concept, a textile-based spoof plasmonic antenna was fabricated in the microwave regime and the performed experimental results show the proposed antenna has a single-beam radiation characteristic with a 70°beam scanning angle range when the frequency is 4.7–6.0 GHz with a high average realized gain of 13.15 dBi. And it still maintains a steady performance when faced with structure deformation, which proves its robustness. Wireless communication quality experiments are performed to demonstrate the proposed antenna can measure the angles of targets and realize wireless signal transmission to specific targets as the frequency varies, it may find great potential in the field of on-body Io T applications.

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