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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 responsibility.The company focuses on comprehensively evaluating and enhancing its supply chain to align with these objectives.This evaluation spans the entire product life cycle,encompassing design,manufacturing,packaging,distribution,usage,and recycling and disposal processes.Key areas of focus include optimizing raw material selection,improving product recyclability,reducing energy consumption and waste emissions,and minimizing carbon emissions during transportation.Through 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 market.GWM’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

High-Energy Batteries:Beyond Lithium-Ion and Their Long Road to Commercialisation

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Nano-Micro Letters 2022年第6期14卷 116-164页

作者： Yulin Gao zhenghui pan Jianguo Sun Zhaolin Liu John Wang Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore ST Engineering Advanced Material Engineering Pte.Ltd. Singapore 619523Singapore Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)Singapore 138634Singapore School of Materials Science and Engineering Tongji UniversityShanghai 201804China

Rechargeable batteries of high energy density and overall performance are becoming a critically important technology in the rapidly changing society of the twenty-first century.While lithium-ion batteries have so far been the dominant choice,numerous emerging applications call for higher capacity,better safety and lower costs while maintaining sufficient cyclability.The design space for potentially better alternatives is extremely large,with numerous new chemistries and architectures being simultaneously explored.These include other insertion ions(e.***.sodium and numerous multivalent ions),conversion electrode materials(e.***.silicon,metallic anodes,halides and chalcogens)and aqueous and solid electrolytes.However,each of these potential“beyond lithium-ion”alternatives faces numerous challenges that often lead to very poor cyclability,especially at the commercial cell level,while lithium-ion batteries continue to improve in performance and decrease in cost.This review examines fundamental principles to rationalise these numerous developments,and in each case,a brief overview is given on the advantages,advances,remaining challenges preventing cell-level implementation and the state-of-the-art of the solutions to these challenges.Finally,research and development results obtained in academia are compared to emerging commercial examples,as a commentary on the current and near-future viability of these“beyond lithium-ion”alternatives.

关键词： High energy density Beyond lithium-ion batteries Multivalent-ion batteries Conversion electrode materials Electrolyte

2D Materials Boost Advanced Zn Anodes:Principles,Advances,and Challenges

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Nano-Micro Letters 2023年第4期15卷 1-22页

作者： Songhe Zheng Wanyu Zhao Jianping Chen Xiaoli Zhao zhenghui pan Xiaowei Yang School of Materials Science and Engineering Tongji UniversityShanghai 201804People’s Republic of China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Aqueous zinc-ion battery(ZIB)featuring with high safety,low cost,environmentally friendly,and high energy density is one of the most promising systems for large-scale energy storage application.Despite extensive research progress made in developing high-performance cathodes,the Zn anode issues,such as Zn dendrites,corrosion,and hydrogen evolution,have been observed to shorten ZIB’s lifespan seriously,thus restricting their practical application.Engineering advanced Zn anodes based on two-dimensional(2D)materials are widely investigated to address these issues.With atomic thickness,2D materials possess ultrahigh specific surface area,much exposed active sites,superior mechanical strength and flexibility,and unique electrical properties,which confirm to be a promising alternative anode material for ZIBs.This review aims to boost rational design strategies of 2D materials for practical application of ZIB by combining the fundamental principle and research progress.Firstly,the fundamental principles of 2D materials against the drawbacks of Zn anode are introduced.Then,the designed strategies of several typical 2D materials for stable Zn anodes are comprehensively summarized.Finally,perspectives on the future development of advanced Zn anodes by taking advantage of these unique properties of 2D materials are proposed.

关键词： Zinc-ion battery Large-scale energy storage application Zn anode Lifespan 2D materials

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 sources.Aqueous 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

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 supercapacitors.However,multistep reactions are usually required to obtain these multicomponent systems,thus giving rise to the complicated and time-consuming issues.Herein,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 CNFs.Benefiting 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

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 cost.However,the development of high-performance ZIBs is largely hindered by the shortage of ideal cathode materials with high-rate capability and long-cycle stability.Herein,we address this bottleneck issue by the quenching-tailored surface chemistry of V_(2)O_(5) cathode nanomaterial.By 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 transfers.Our 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 performance.This 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

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 wearability.However,how to effectively employ multifunctional fibers in one integrated device that can simultaneously achieve energy storage and utilization is a major challenge.Herein,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 applications.First,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 electrode.Benefiting 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/cm3.Then,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 FPS.Finally,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 FASCs.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

Current progress in developing metal oxide nanoarrays-based photoanodes for photoelectrochemical water splitting

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Science Bulletin 2019年第18期64卷 1348-1380页

作者： Yongcai Qiu zhenghui pan Haining Chen Daiqi Ye Lin Guo Zhiyong Fan Shihe Yang Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control School of Environment and EnergySouth China University of TechnologyGuangzhou 510006China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore School of Materials Science and Engineering Beihang UniversityBeijing 100191China School of Chemistry and Environment Beihang UniversityBeijing 100191China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyHong KongChina Department of Chemistry The Hong Kong University of Science and TechnologyHong KongChina Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and Biotechnology Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China

Solar energy driven photoelectrochemical(PEC) water splitting is a clean and powerful approach for renewable hydrogen production. The design and construction of metal oxide based nanoarray photoanodes is one of the promising strategies to make the continuous breakthroughs in solar to hydrogen conversion efficiency of PEC cells owing to their owned several advantages including enhanced reactive surface at the electrode/electrolyte interface, improved light absorption capability, increased charge separation efficiency and direct electron transport pathways. In this Review, we first introduce the structure,work principle and their relevant efficiency calculations of a PEC cell. We then give a summary of the state-of the-art research in the preparation strategies and growth mechanism for the metal oxide based nanoarrays, and some details about the performances of metal oxide based nanoarray photoanodes for PEC water splitting. Finally, we discuss key aspects which should be addressed in continued work on realizing high-efficiency metal oxide based nanoarray photoanodes for PEC solar water splitting systems.

关键词： Photoelectrochemical water splitting Metal oxide based nanoarray photoanodes Preparation strategies and growth mechanism

Nanohollow Carbon for Rechargeable Batteries:Ongoing Progresses and Challenges

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Nano-Micro Letters 2020年第12期12卷 362-391页

作者： Jiangmin Jiang Guangdi Nie Ping Nie Zhiwei Li zhenghui pan Zongkui Kou Hui Dou Xiaogang Zhang John Wang Jiangsu Key Laboratory of Electrochemical Energy Storage Technology College of Material Science and EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore Industrial Research Institute of Nonwovens and Technical Textiles College of Textiles and ClothingQingdao UniversityQingdao 266071People’s Republic of China Key Laboratory of Preparation and Application of Environmental Friendly Materials College of ChemistryJilin Normal UniversitySiping 136000People’s Republic of China

Among the various morphologies of carbon-based materials,hollow carbon nanostructures are of particular interest for energy storage.They have been widely investigated as electrode materials in different types of rechargeable batteries,owing to their high surface areas in association with the high surface-to-volume ratios,controllable pores and pore size distribution,high electrical conductivity,and excellent chemical and mechanical stability,which are beneficial for providing active sites,accelerating electrons/ions transfer,interacting with electrolytes,and giving rise to high specific capacity,rate capability,cycling ability,and overall electrochemical performance.In this overview,we look into the ongoing progresses that are being made with the nanohollow carbon materials,including nanospheres,nanopolyhedrons,and nanofibers,in relation to their applications in the main types of rechargeable batteries.The design and synthesis strategies for them and their electrochemical performance in rechargeable batteries,including lithium-ion batteries,sodium-ion batteries,potassium-ion batteries,and lithium–sulfur batteries are comprehensively reviewed and discussed,together with the challenges being faced and perspectives for them.

关键词： Hollow carbon nanospheres Nanopolyhedrons and nanofibers Template synthesis Rechargeable batteries Electrochemical performance