Application and exploration of nanofibrous strategy in electrode design
来源期刊:JOURNAL OF MATERIALS SCIENCE TECHNOLOG2021年第15期
论文作者:Yongliang Li Hua Yuan Yanbing Chen Xiaoyu Wei Kunyan Sui Yeqiang Tan
摘 要:The key to develop high specific energy rechargeable batteries is development of new electrode materials. The existing electrode materials still have many problems: the shuttle effect and poor conductivity of the sulfur cathode, the inevitable volume expansion of the silicon anode and the lithium dendrite of the lithium metal anode that cause short circuits, etc. Nanofibers, as active electrical materials, conductive additives and electrode bodies, can play multiple roles in electrode design. More interestingly, nanofibers can be functionalized to obtain better controllable properties(i.e., electrolyte affinity, pore size distribution and surface electronic structure), thereby further enhancing electrochemical performance. In this article, the latest research progress in electrode design based on nanofibers is reviewed, including processing methods, structure, morphology and electrochemical performance. The key problems affecting the electrochemical performance of the electrode are also discussed, such as the preparation process,atomic structure, electrical conductivity, surface area and pore distribution of nanofibers, to provide reference points for nanofibers in excellent electrode design.
Yongliang Li,Hua Yuan,Yanbing Chen,Xiaoyu Wei,Kunyan Sui,Yeqiang Tan
State Key Laboratory of Bio-Fibers and Eco-Textiles & Institute of Marine Biobased Materials & Collage of Materials Science and Engineering, Qingdao University
摘 要:The key to develop high specific energy rechargeable batteries is development of new electrode materials. The existing electrode materials still have many problems: the shuttle effect and poor conductivity of the sulfur cathode, the inevitable volume expansion of the silicon anode and the lithium dendrite of the lithium metal anode that cause short circuits, etc. Nanofibers, as active electrical materials, conductive additives and electrode bodies, can play multiple roles in electrode design. More interestingly, nanofibers can be functionalized to obtain better controllable properties(i.e., electrolyte affinity, pore size distribution and surface electronic structure), thereby further enhancing electrochemical performance. In this article, the latest research progress in electrode design based on nanofibers is reviewed, including processing methods, structure, morphology and electrochemical performance. The key problems affecting the electrochemical performance of the electrode are also discussed, such as the preparation process,atomic structure, electrical conductivity, surface area and pore distribution of nanofibers, to provide reference points for nanofibers in excellent electrode design.
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