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Vanadium metal-organic framework-derived multifunctional fibers for asymmetric supercapacitor,piezoresistive sensor,and electrochemical water splitting

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SmartMat 2022年第4期3卷 608-618页

作者： Jie Pu Yong Gao Qinghe Cao Gangwen Fu Xing Chen zhenghui pan Cao Guan Institute of Flexible Electronics Frontiers Science Center for Flexible ElectronicsNorthwestern Polytechnical UniversityXi'anChina Shaanxi Engineering Research Center for Digital Manufacturing Technology Northwestern Polytechnical UniversityXi'anChina Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore School of Materials Science and Engineering Tongji UniversityShanghaiChina

Fiber-shaped integrated devices are highly desirable for wearable and portable smart electronics,owing to their merits of lightweight,high flexibility,and ***,how to effectively employ multifunctional fibers in one integrated device that can simultaneously achieve energy storage and utilization is a major ***,a set of multifunctional fibers all derived from vanadium metal-organic framework nanowires grown on carbon nanotube fiber(V-MOF NWs@CNT fiber)is demonstrated,which can be used for various energy storage and utilization ***,a fiber-shaped asymmetric supercapacitor(FASC)is fabricated based on the CoNi-layered double hydroxide nanosheets@vanadium oxide NWs@CNT fiber(CoNi-LDH NSs@V2O5 NWs@CNT fiber)as the positive electrode and vanadium nitride(VN)NWs@CNT fiber as the negative *** from the outstanding compatibility of the functional materials,the FASC with a maximum working voltage of 1.7 V delivers a high-stack volumetric energy density of 11.27 mW·h/***,a fiber-shaped integrated device is assembled by twisting a fiber-shaped piezoresistive sensor(FPS;VN NWs@CNT fiber also served as the highly sensitive material)and a FASC together,where the highperformance FASC can provide a stable and continuous output power for the ***,the S-VOx NWs@CNT fiber(sulfur-doped vanadium oxide)electrode shows promising electrocatalytic performance for both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),which is further constructed into a self-driven water-splitting unit with the integration of the *** present work demonstrates that the V-MOF NWs@CNTderived fibers have great potential for constructing wearable multifunctional integrated devices.

关键词： asymmetric supercapacitor electrochemical water splitting fiber-shape integrated devices multifunctional piezoresistive sensor V-MOF

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Electrochromic-Induced Rechargeable Aqueous Batteries: An Integrated Multifunctional System for Cross-Domain Applications

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Nano-Micro Letters 2023年第6期15卷 304-334页

作者： Qi Zhao zhenghui pan Binbin Liu Changyuan Bao Ximeng Liu Jianguo Sun Shaorong Xie Qing Wang John Wang Yanfeng Gao Department of Materials Science and Engineering Shanghai UniversityShanghai 200444People’s Republic of China Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore Department of Materials Science and Engineering Tongji UniversityShanghai 200092People’s Republic of China Department of Computer Engineering and Science Shanghai UniversityShanghai 200444People’s Republic of China National University of Singapore(Chongqing)Research Institute Chongqing 401120People’s Republic of China Institute of Materials Research and Engineering A*StarSingapore 138634Singapore Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008People’s Republic of China

Multifunctional electrochromic-induced rechargeable aqueous batteries(MERABs) integrate electrochromism and aqueous ion batteries into one platform, which is able to deliver the conversion and storage of photo-thermal-electrochemical *** ion batteries compensate for the drawbacks of slow kinetic reactions and unsatisfied storage capacities of electrochromic devices. On the other hand, electrochromic technology can enable dynamically regulation of solar light and heat radiation. However,MERABs still face several technical issues, including a trade-off between electrochromic and electrochemical performance, low conversion efficiency and poor service life. In this connection, novel device configuration and electrode materials, and an optimized compatibility need to be considered for multidisciplinary applications. In this review,the unique advantages, key challenges and advanced applications are elucidated in a timely and comprehensive manner. Firstly, the prerequisites for effective integration of the working mechanism and device configuration, as well as the choice of electrode materials are examined. Secondly, the latest advances in the applications of MERABs are discussed, including wearable, self-powered, integrated systems and multisystem conversion. Finally, perspectives on the current challenges and future development are outlined, highlighting the giant leap required from laboratory prototypes to large-scale production and eventual commercialization.

关键词： Electrochromic Aqueous batteries Multifunctional Integration

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An Analysis of Supply Chain Environment in Great Wall Motor Based on Life-Cycle Assessment

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Proceedings of Business and Economic Studies 2024年第1期7卷 27-44页

作者： zhenghui pan Jian Li Zhifang Wang Yang Sun Haixing Huang Xiaoshan Kang Anqin Ma Zhisheng Zhang Ji Qin Jiehong Zhong Strategic Business Management Research Areas Doctor of Business AdministrationRussian University of TransportMoscowRussia IoT Technology and Application Areas Doctorate in Computer ScienceSan Antonio Catholic University of MurciaMurciaSpain AIoT Laboratory IoT Intelligent Link Technology and Application AreaGreat Wall Motor Holdings GroupShanghaiChina

Great Wall Motor(GWM),a leading automotive manufacturer,places a strong emphasis on environmental sustainability and social *** company focuses on comprehensively evaluating and enhancing its supply chain to align with these *** evaluation spans the entire product life cycle,encompassing design,manufacturing,packaging,distribution,usage,and recycling and disposal *** areas of focus include optimizing raw material selection,improving product recyclability,reducing energy consumption and waste emissions,and minimizing carbon emissions during *** these endeavors,GWM not only enhances its environmental performance by reducing carbon emissions and resource consumption but also bolsters its brand image and competitiveness in the ***’s dedication to environmental innovation and technological leadership serves as a driving force behind sustainable development and social responsibility within the industry.

关键词： Environmental assessment Sustainability Resource conservation Carbon emissions Social responsibility

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One‑Pot Rational Deposition of Coaxial Double‑Layer MnO_(2)/Ni(OH)_(2) Nanosheets on Carbon Nanofibers for High‑Performance Supercapacitors

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Advanced Fiber Materials 2022年第5期4卷 1129-1140页

作者： Guangdi Nie Zhenyuan Zhang Yingqi Liu Jian Wang Chen Fu Haiqi Yin Juan Chen Lin Zhao zhenghui pan Industrial Research Institute of Nonwovens and Technical Textiles Collaborative Innovation Center for Eco‑Textiles of Shandong ProvinceCollege of Textiles and ClothingQingdao UniversityQingdao 266071People’s Republic of China College of Textile and Clothing Xinjiang UniversityUrumchi 830046People’s Republic of China School of Materials Science and Engineering Tongji UniversityShanghai 201804People’s Republic of China

Constructing“nanoglue”between inorganic electroactive species and conductive carbon scaffolds is an effective strategy to improve their compatibility and binding interaction,holding a great promise for fabricating high-performance hybrid electrodes for ***,multistep reactions are usually required to obtain these multicomponent systems,thus giving rise to the complicated and time-consuming ***,we for the first time,demonstrate a green one-pot method to anchor coaxial double-layer MnO_(2)/Ni(OH)_(2)nanosheets on electrospun carbon nanofibers(CNFs)(denoted as MNC),where the intermediate MnO_(2)layer serves as the“nanoglue”to couple the vertically aligned Ni(OH)_(2)nanosheets and conductive *** from the unique chemical composition and hierarchical architecture,the resultant electrode delivers outstanding electrochemical performance,including an excellent specific capacitance(1133.3 F g^(-1)at 1 A g^(-1))and an ultrahigh rate capability(844.4 F g^(-1)at 20 A g^(-1)).Moreover,the asymmetric supercapacitor assembled by using the MNC as positive electrode and the CNF as negative electrode can achieve an optimal energy density of 35.1 Wh kg^(-1)and a maximum power density of 8000 W kg^(-1).The one-pot strategy that stabilizes electroactive metal hydroxides on conductive carbons using a MnO_(2)“nanoglue”to design advanced hybrid electrodes is expected to be broadly applicable not only to the supercapacitor technology but also to other electrochemical applications.

关键词： “Nanoglue” One-pot method Coaxial double-layer architecture Electrospinning Supercapacitors

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Quench-tailored Al-doped V_(2)O_(5) nanomaterials for efficient aqueous zinc-ion batteries

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Journal of Energy Chemistry 2022年第7期31卷 52-58,I0003页

作者： Hanmei Jiang Wenbin Gong Yifu Zhang Xin Liu Moaz Waqar Jingjing Sun Yanyan Liu Xueying Dong Changgong Meng zhenghui pan John Wang State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningChina Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore School of Physics and Energy Xuzhou University of TechnologyXuzhou 221018JiangsuChina School of Materials Science and Engineering Tongji UniversityShanghai 201804China

Rechargeable aqueous zinc-ion batteries(ZIBs)are regarded as a promising competition to lithium-ion batteries as energy storage devices,owing to their high safety and low ***,the development of high-performance ZIBs is largely hindered by the shortage of ideal cathode materials with high-rate capability and long-cycle ***,we address this bottleneck issue by the quenching-tailored surface chemistry of V_(2)O_(5) cathode *** rapid quenching from high temperatures,Al ions are doped into V_(2)O_(5) lattice(Al-V_(2)O_(5))and abundant oxygen vacancies are formed on the surface/nearsurface,which facilitate the desired rapid electron *** density functional theory(DFT)simulations elucidate that the doping of Al ions into V_(2)O_(5) remarkably reduces the Zn^(2+)-diffusion barriers and improves the electrical conductivity of V_(2)O_(5).As a proof-of-concept application,the thus-optimized AlV_(2)O_(5) cathode delivers a superior specific capacity of 532 m Ah g^(-1) at 0.1 A g^(-1) and a long-cycling life with76%capacity retention after 5000 cycles,as well as a good rate *** work provides not only a novel strategy for tuning the surface chemistry of V_(2)O_(5) to boost the Zn^(2+)storage but also a general pathway of modifying metal oxides with improved electrochemical performance.

关键词： Quenching-tailored V_(2)O_(5) Aqueous zinc-ion batteries Surface chemistry Long-cycle stability High-rate capability

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Three-dimensional knotting of W_(17)O_(47)@PEDOT:PSS nanowires enables high-performance flexible cathode for dual-functional electrochromic and electrochemical device

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InfoMat 2022年第4期4卷 100-111页

作者： Qi Zhao Jinkai Wang Xinghui Ai Yujuan Duan zhenghui pan Shaorong Xie John Wang Yanfeng Gao Department of Materials Science and Engineering Shanghai UniversityShanghaiChina Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore Department of Computer Engineering and Science Shanghai UniversityShanghaiChina

An efficient integration of electrochromic and electrochemical devices into one flexible entity enables both energy storage and energy-saving *** this purpose,achieving both high electrochromic and electrochemical performance is the key ***,a new 3D architecture is successfully made by knotting W_(17)O_(47)@PEDOT(poly(3,4-ethylenedioxythiophene)):PSS(poly(styrenesulfonate))nanowires with NaWO_(3)nanoknots,and interestingly,the 3D W_(17)O_(47)/(NaWO_(3)-knots)@PEDOT:PSS cathode thus-made simultaneously exhibits a large optical modulation(79.7%at 633 nm),an ultra-long cycling life(76%of original optical modulation retained after 12400 cycles),and a high areal capacitance(55.1 mF cm^(-2)at 0.1 mA cm^(-2)).Our density functional theory(DFT)calculations demonstrate that the much improved dual-functional performance is correlated to the raised electronic conductivity and ion adsorption at the W_(17)O_(47)/(NaWO_(3)nanoknots)interface,together with the ion adsorption of PEDOT:PSS in the 3D-knotted *** a proof-of-concept application,different-sized flexible dual-functional electrochromic/electrochemical devices(FDEDs)were assembled and investigated for various application scenarios,including a smart window(15 cm×10 cm),a wearable wristband(20 cm×2.5 cm),and a smart *** smart window made of the FDED enables a large temperature difference of 27.6℃ confirm-tested in model houses,where the energy source also powers three light-emitting diodes(LEDs).The understandings of the key governing principles in the electrodes and dual-functionalities provide a timely foundation for the new generation flexible multifunctional devices.

关键词： 3D knotting of W_(17)O_(47)@PEDOT:PSS nanowires dual-functionalities electrochromic and electrochemical integration flexible cathode

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Bi Nanoparticles Anchored in N-Doped Porous Carbon as Anode of High Energy Density Lithium Ion Battery

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Nano-Micro Letters 2018年第4期10卷 10-23页

作者： Yaotang Zhong Bin Li Shumin Li Shuyuan Xu zhenghui pan Qiming Huang Lidan Xing Chunsheng Wang Weishan Li School of Chemistry and Environment South China Normal University Engineering Research Center of MTEES (Ministry of Education) Research Center of BMET (Guangdong Province) Engineering Laboratory of OFMHEB (Guangdong Province) Key Laboratory of ETESPG (GHEI) and Innovative Platform for ITBMD (Guangzhou Municipality)South China Normal University Department of Chemical and Bimolecular Engineering University of MarylandCollege Park

A novel bismuth–carbon composite, in which bismuth nanoparticles were anchored in a nitrogen-doped carbon matrix(Bi@NC), is proposed as anode for high volumetric energy density lithium ion batteries(LIBs).Bi@NC composite was synthesized via carbonization of Zn-containing zeolitic imidazolate(ZIF-8) and replacement of Zn with Bi, resulting in the N-doped carbon that was hierarchically porous and anchored with Bi nanoparticles. The matrix provides a highly electronic conductive network that facilitates the lithiation/delithiation of ***, it restrains aggregation of Bi nanoparticles and serves as a buffer layer to alleviate the mechanical strain of Bi nanoparticles upon Li insertion/*** these contributions, Bi@NC exhibits excellent cycling stability and rate capacity compared to bare Bi nanoparticles or their simple composites with carbon. This study provides a new approach for fabricating high volumetric energy density LIBs.

关键词： Porous N-doped carbon Bi nanoparticles Anode Lithium-ion battery High energy density

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基于百度云服务的Android云终端设计及实现

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电子测试 2017年第7X期28卷 61-62页

作者：潘正辉安谷科技股份有限公司江苏无锡214000

网络信息技术的不断发展,云服务应用而生,云服务不仅为人们的工作、生活提供了便利,而且它还能在集成于终端设备,在Android系统中成为实用性较强的工具。本文首先介绍了相关定义,然后分析了系统需求及总体设计,最后探究了云终端设计和... 详细信息

网络信息技术的不断发展,云服务应用而生,云服务不仅为人们的工作、生活提供了便利,而且它还能在集成于终端设备,在Android系统中成为实用性较强的工具。本文首先介绍了相关定义,然后分析了系统需求及总体设计,最后探究了云终端设计和实现。

关键词：百度云服务 Android 云终端

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Infiltrating lithium into carbon doth decorated with zinc oxide arrays for dendrite-free lithium metal anode

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Nano Research 2019年第3期12卷 525-529页

作者： Xianshu Wang zhenghui pan Yang Wu Xiaoyu Ding Xujia Hong Guoguang Xu Meinan Liu Yuegang Zhang Weishan Li School of Chemistry and Environment South China Normal University Guangzhou 510006 China i-lab Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China Department of Physics Tsinghua University Beijing 100084 China Engineering Research Center of MTEES (Ministry of Education) Research Center of BMET (Guangdong Province) and Key Laboratory of ETESPG (GHEI) South China Normal University Guangzhou 510006 China

Lithium metal anode for batteries has attracted extensive attentions, but its application is restricted by the hazardous dendritic Li growth and dead Li formation. To address these issues, a novel Li anode is developed by infiltrating molten Li metal into conductive carbon cloth decorated with zinc oxide arrays. In carbonate-based electrolyte, the symmetric cell shows no short circuit over 1,500 h at 1 mA·cm^-2, and stable voltage profiles at 3 mA cm^-2 for ~ 300 h cycling. A low overpotential of ~ 243 mV over 350 cycles at a high current density of 10 mA·cm^-2 is achieved, compared to the seriously fluctuated voltage and fast short circuit in the cell using bare Li metal. Meanwhile, the asymmetric cell withstands 1,000 cycles at 10 C (1 C = 167 mAh·g^-1) compared to the 210 cycles for the cell using bare Li anode. The excellent performance is attributed to the well-regulated Li plating/stripping drive n from the formation of LiZn alloy on the wavy carb on fibers, resulting in the suppress!on of dendrite growth and pulverization of the Li electrode during cycling.

关键词： lithium metal anodes lithium plating/stripping dendrite-free thermal infiltration carbon cloth zinc oxide nanowire arrays

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无定型NiCoS_(x)纳米片在多孔碳基纳米纤维表面的原位可控形成及其超级电容性能研究

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Science China Materials 2023年第9期66卷 3484-3492页

作者：张振渊王健朱兆媛马翔房宽峻王策康黎星潘争辉乜广弟 Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education College of Textiles and ClothingQingdao UniversityQingdao 266071China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Alan G.MacDiarmid Institute College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

近年来,导电碳基质与过渡金属硫化物(TMS)的巧妙结合在超级电容器中取得了一系列的研究进展.然而,在长期的充/放电过程中,这些复合物在异质界面处较弱的兼容性和结合力通常导致TMS的剥离和电极容量的衰减.基于此,本文设计了一种简单且... 详细信息

近年来,导电碳基质与过渡金属硫化物(TMS)的巧妙结合在超级电容器中取得了一系列的研究进展.然而,在长期的充/放电过程中,这些复合物在异质界面处较弱的兼容性和结合力通常导致TMS的剥离和电极容量的衰减.基于此,本文设计了一种简单且可扩展的原位硫化方法,用于构建稳定的超级电容器电极,其中多孔NiCo/C纳米纤维作为核芯,无定形NiCoS_(x)纳米片作为壳层,形成NiCo/C@NiCoS_(x)(CNCS)分级核壳结构.外部NiCoS_(x)纳米片的质量负载和尺寸在很大程度上取决于内部NiCo/C纳米纤维的碳化温度.优化后的CNCS电极表现出优异的比容量和良好的倍率性能.组装的非对称超级电容器具有突出的能量密度和较高的循环稳定性.这种调节异质界面的原位策略有望用于开发稳定的基于TMS的复合电极.

关键词：过渡金属硫化物纳米纤维纳米片超级电容器无定形能量密度多孔碳异质界面

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