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CCS Chemistry 2024年第3期6卷 749-760页

作者： Junkai yang jixing yang Yunhua Xu Yuesheng Li School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300350

Conducting polymers(CPs)have long been studied as cathode materials for lithium-ion batteries,but the low doping level(maximum:30–50%or even lower)and poor cycling stability limit their ***,we have developed a method of nanoporeconfined in situ electropolymerization to prepare nanostructured polythiophene-type porous cathodes,achieving significantly improved doping availability and long cycle *** was verified that the nanosized polymer formed in situ and loose porous structure are conducive to the doping reaction and maintain high electrochemical *** constructed thieno[3,2-b]thiophene(TtTP)/active carbon cathode delivers an ultrahigh reversible capacity of 309.2 mAh g^(−1)(doping level up to 80.9%)along with an ultrahigh energy density of 1252.3 Wh Kg^(−1),and an ultrahigh rate capability(172.4 mAh g^(−1) at 30 A g^(−1)),which far exceed all the CPs and even all the p-type organic cathode materials ***,an excellent long cycle life of 2000 cycles at 5 A g^(−1) is also revealed,which is a new record for CPs-based cathode materials in nonaqueous lithium-ion *** method provides an effective strategy to improve the doping level and cycling stability of CP-based cathode materials.

关键词： organic cathode materials conducting polymers lithium-ion batteries porous carbon in situ electropolymerization

Linear hybrid simulations of low-frequency fishbone instability driven by energetic passing particles in tokamak plasmas

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Plasma Science and Technology 2022年第6期24卷 96-104页

作者： jixing yang Guoyong FU Wei SHEN Minyou YE School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China Institute for Fusion Theory and Simulation and Department of Physics Zhejiang UniversityHangzhou 310027People's Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China

A linear simulation study of energetic passing particle-driven low-frequency fishbone instability in tokamak plasmas has been carried out using the global kinetic-MHD(magnetohydrodynamics)hybrid code *** work is focused on the interaction of energetic passing beam ions and n=1 mode with a monotonic safety factor q profile and q_(0)<***,the stability and mode frequency as well as mode structure of the n=1mode are calculated for scans of parameter values of beam ion beta,beam ion injection energy,beam ion orbit width,beam ion beta profile,as well as background plasma *** excited modes are identified as a low-frequency fishbone with the corresponding resonance of w_(φ)+w_(θ)=w,where w_(φ)is the beam ion toroidal transit frequency and w_(θ)is the beam ion poloidal transit *** simulated mode frequency is approximately proportional to the beam ion injection energy and beam ion orbit *** mode structure is similar to that of internal kink *** simulation results are similar to the analytic theory of Yu et al.

关键词： fishbone energetic particle hybrid simulations tokamak

Block Copolymer Solid Electrolytes Based on Comb-Like Poly(ethylene glycol)Plasticized Poly(ionic liquid)s for Lithium-Ion Batteries

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Chinese Journal of Chemistry 2023年第19期41卷 2493-2501页

作者： Runtao Zhao jixing yang Bin Wang Zhe Ma Li Pan Yuesheng Li School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin300072 China

Electrolytes based on poly(ionic liquid)s(PILs)have attracted great attention in the fields of next-generation solid lithium-ion ***,the low ionic conductivity prevents their practical ***,we report novel solid electrolytes based on block copolymers composed of PILs and comb-like poly(ethylene glycol)(PEG),which were synthesized via ring-opening metathesis polymerization of 3-(2-(bicyclo[2.2.1]hept-5-en-2-yl)ethyl)-1-butyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide and poly(ethylene glycol monomethyl ether)bicyclo[2.2.1]***-like PEG acts as plasticizers in block copolymers dominated by PILs to promote the mobility of PILs *** of the copolymer composition and length of the comb-like PEG chain on ionic conductivity were *** optimized electrolyte delivers the highest ionic conductivity of 1.5×10^(–5)S·cm^(–1)at 30℃,and robust electrochemical stability up to 4.6 V.A solid-state Li/LiFePO4 cell using the optimized electrolyte demonstrates good cycle performance at 0.2 C with high capacity retention of 92%after 70 cycles at 50℃.

关键词： Solid polymer electrolytes Li-ion batteries Polymerized ionic liquids Poly(ethylene glycol) Block copolymers Electrostatic interactions

Sulfur Vacancies Tune the Charge Distribution of NiCo_(2)S_(4) for Boosting the Energy Density of Stretchable Yarn‑Based Zn Ion Batteries

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Advanced Fiber Materials 2023年第2期5卷 650-661页

作者： Xinyue Cheng Xu yang Yanan Zhang Pengfei Lv jixing yang Fenglin Huang Qufu Wei Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxi 214122People’s Republic of China Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Minjiang UniversityFuzhou 350108People’s Republic of China School of Materials Science and Engineering Tianjin UniversityTianjin 300072People’s Republic of China State Key Laboratory of Molecular Engineering of Polymers Fudan UniversityShanghai 200438People’s Republic of China

Yarn-based batteries with the dual functions of wearable and energy storage have demonstrated promising potential in wearable energy ***,it is still an urgent problem to construct efficient and flexible electrodes while optimize the configuration of yarn-based batteries to maintain excellent electrochemical performance under different mechanical ***,NiCo_(2)S_(4-x) nanotube arrays with tunable S-vacancies are constructed on carbon yarn(CY)(NiCo_(2)S_(4-x)@CY)by a facile hydrothermal *** aqueous zinc-ion batteries(ZIBs)with NiCo_(2)S_(4-x)@CY as cathodes exhibit exceptional discharge capacity(271.7 mAh g^(-1))and outstanding rate performance(70.9%capacity retention at 5 A g^(-1)),and reveal a maximum power density of 6,059.5 W kg^(-1) and a maximum energy density of 432.2 Wh kg^(-1).It is worth noting that the tunable S-vacancies promote the surface reconfiguration and phase transitions of NiCo_(2)S_(4-x),thereby enhancing the conductivity and charge storage *** high reactivity and cycling stability of NiCo_(2)S_(4-x)@CY can be related to the discharge products of S-doped NiO and ***,flexible stretchable yarn-based ZIBs with wrapped yarn structures are constructed and exhibit excellent tensile stability and durability under a variety of mechanical *** a proof of concept,the ZIBs integrated into the fabric show excellent electrochemical performance even in response to simultaneous stretching and bending mechanical *** proposed strategy provides novel inspiration for the development of highly efficient and economical yarn-based ZIBs and wearable energy textiles.

关键词： Sulfur vacancies NiCo_(2)S_(4-x)nanotube arrays Stretchable Yarn-based zinc ion batteries Wearable energy textiles

Daixian:An Ancient Border Town

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China Today 2007年第12期56卷 72-73页

作者： YI FAN & yang jixing

DAIXIAN is an ancient town in central Shanxi Province,just a few hours by expressway from *** have been living here since the New Stone Age in around 7,000 *** the border between ancient China and the northern lands of nomadic tribes,it was once a place of considerable stra- tegic importance that witnessed many significant *** times of peace, it was a prosperous nexus of trade

关键词：古城代县山西经济发展

Therapeutic Smart Insole Technology with Archimedean Algorithmic Spiral Triboelectric Nanogenerator‑Based Power System and Sensors

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Advanced Fiber Materials 2024年第6期6卷 1746-1764页

作者： Alfred Mensah Shiqin Liao Jeremiah Amesimeku Jie Li Yajun Chen Yi Hao jixing yang Qingqing Wang Fenglin Huang Yun Liu Qufu Wei Pengfei Lv Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxi 214122People’s Republic of China Department of Geriatric Endocrinology First Affiliated Hospital of Nanjing Medical UniversityNanjing 210093People’s Republic of China Jiangxi Centre for Modern Apparel Engineering and Technology Jiangxi Institute of Fashion TechnologyNanchang 330201People’s Republic of China Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China Jiangsu Textiles Quality Services Inspection Testing Institute Nanjing 210007People’s Republic of China School of Materials Science and Engineering Tianjin UniversityTianjin 300072People’s Republic of China

Clinical diagnosis and early intervention employ pedobarometry,which analyzes gait,posture,and foot *** utilize smart insoles to track step count,distance,and other parameters to improve *** sensor platforms are bulky and limited to indoor or clinical environments,despite the trend of developing specialized insoles for recuperation and ***,we presented a fully flexible,typically portable,and multi-functional insole monitoring technology powered by Archimedean algorithmic spiral TENG-based power system strictly produced from biopolymers such as bacterial cellulose,conjugate-blend of polydimethylsiloxane(PDMS),poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS),and *** with exceptional mechanical and electrical performance[current density(JSC)≈40-50μA/cm2 and power density(PD)≈500-600μW/cm2],the smart insole system exhibited good sensor-human foot interfacial analysis results,proving to be capable of biomechanical analysis of gait,posture,and many other podiatry-related conditions,albeit being soft,portable,and having compatibility potential for IoT integration.

关键词： Therapeutic smart insole Archimedean algorithmic spiral Triboelectric nanogenerator Pedobarometric sensors Biocompatible

In-situ electropolymerized bipolar organic cathode for stable and high-rate lithium-ion batteries

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Science China Materials 2021年第12期64卷 2938-2948页

作者： Wei Wang Chen Zhao jixing yang Peixun Xiong Hai Su Yunhua Xu School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China

To address the dissolution issue and enhance the electrochemical performance of organic electrode materials,herein, a bipolar organic cathode was prepared by in-situ electropolymerization of amino-phenyl carbazole naphthalene diimide(APCNDI). APCNDI is composed of n-type 1,4,5,8-naphthalene tetracarboxylic diimide that stores Li cations and p-type carbazole groups which react with anions and serve as polymerization sites. Electropolymerization completely eliminated the dissolution problem of APCNDI, and the electropolymerized cathode demonstrated a bipolar reaction with excellent electrochemical performance, stable cycling performance with a capacity retention of 92 mA h g;after1000 cycles, and a superior rate performance of 72 mA h g;at 10 A g;. The bipolar feature and reactions of APCNDI were systematically investigated and verified by multiple characterization techniques. Our findings provide a novel strategy for the design and fabrication of electrodes for high-performance organic batteries.

关键词： lithium-ion battery bipolar organic cathode in-situ electropolymerization polyimide carbazole

个体化时代的集体行动:社区草根体育组织的动机诉求与矛盾冲突——以广场舞为例

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体育与科学 2016年第3期37卷 82-88页

作者：杨继星淮北师范大学体育学院

广场舞扰民而引发的冲突成为中国社会的一个严重的问题,并且一度陷入治理困境。作为"临时性"的协作团体,广场舞的参与具备多元化动机特征,具体表现为通过体育参与来实现健康促进成为广场舞参与者的主要动机;职业境遇与家庭环境对广场舞... 详细信息

广场舞扰民而引发的冲突成为中国社会的一个严重的问题,并且一度陷入治理困境。作为"临时性"的协作团体,广场舞的参与具备多元化动机特征,具体表现为通过体育参与来实现健康促进成为广场舞参与者的主要动机;职业境遇与家庭环境对广场舞的场域形成促进作用;广场舞所营造的场域环境唤起了老年群体的历史记忆与身份认同;个体生命历程的结构变迁与自我调适的需要促进了广场舞的价值选择。代际关系分离产生孤独感的自我调适;由个体愉悦感衍生的性别角色平衡与价值的彰显是广场舞参与者的主要心理特征。体育资源供给不足冲突表征背后是群体化大场面叙事的主观失控;个体化时代的群体需求与公共环境需求之间的矛盾冲突是广场舞引发冲突的主要原因。健身需求与广场舞的噪音扰民无逻辑性关系,广场舞所具有的群体意识和自我强化的功能是广场舞"大场面"和"大动静"的根源所在。从长效机制来看,从城市规划上建立更加适宜并与环境和谐共生的健身场所和设施,塑造一个更加包容体现多元价值的社会文化体系,进一步完善立法、制度,促进社会治理体系与能力的现代化才是治理根本。

关键词：广场舞健康促进职业境遇历史记忆社会变迁利益博弈群体需求社会治理

Pricing decision of green supply chain under the game competition of duopolistic retailers

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Journal of Southeast University(English Edition) 2020年第4期36卷 465-474页

作者： Zhang Qinglei yang jixing Duan Jianguo Qin Jiyun School of Logistics Science and Engineering Shanghai Maritime University Shanghai 201306 China

In order to evaluate the impact of green production introduced by the manufacturer and study the competitive strategy between two retailers,four strategic models among diverse retailers,i.e.,Cournot,Stackelberg and two cases of collusion,are *** optimal decision is obtained by the game theory and numerical *** results indicate that the manufacturer's marginal profitability is no less than that of the two ***,due to the manufacturer's green cost,the downstream profitability of the supply chain may exceed the upstream manufacturer's *** retailers'Cournot behavior causes the manufacturer to acquire the highest profitability and set the highest green ***,there is an opposite result in *** retailers will choose Cournot pricing when the consumer's green sensitivity is higher than a *** consumers are more sensitive to the price difference of products,retailers prefer collusion,and then choose the Stackelberg ***'profitability will increase as competition among retailers *** competition allows two duopolistic retailers to acquire a higher profitability.

关键词： green supply chain duopolistic retailers competitive strategy game theory

Thiourea-based polyimide/RGO composite cathode:A comprehensive study of storage mechanism with alkali metal ions

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Science China Materials 2020年第10期63卷 1929-1938页

作者： Peixun Xiong Huimin Yin Zifeng Chen Chen Zhao jixing yang Shuping Huang Yunhua Xu School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials College of ChemistryFuzhou UniversityFuzhou 350108China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

Although organic electrode materials have merits of abundant resources,diverse structures and environmental friendliness,their performance for electrochemical energy storage is far *** this work,a thiourea-based polyimide/reduced graphene oxide(PNTCSA/RGO)composite was synthesized via a condensation polymerization *** a cathode material in lithium-ion batteries,excellent performance is demonstrated with high reversible capacity(144.2 mA h g^−1),high discharge voltage(∼2.5 V),and long cycling life(over 2000 cycles at 500 mA g^−1),which are comparable to those of other well documented in organic *** electrochemical performance is also demonstrated for sodium ion batteries(a cycling life of 800 cycles at 500 mA g^−1),while poor performance is delivered in potassium ion *** studies reveal that the active sites are carbonyl groups for all alkali ions but one inserted alkali metal ion is shared by two carbonyl groups from the two neighbor *** importantly,K ions have stronger interaction with S atoms than Li/Na ions,which may lead to poor structure reversibility and account for the poor cycling *** findings provide a fundamental understanding of polyimide based polymer electrodes and help to design and develop high performance organic electrode materials for alkali metal ion batteries.

关键词： electrochemical energy storage polyimide organic electrode material lithium/sodium/potassium-ion battery