锂离子电池聚合物正极材料研究进展

高储能的锂电池聚合物正极材料是近年来新型电化学能源研究发展的热点。本文综述了自由基聚合物、导电聚合物、有机多硫聚合物以及多骨架碳硫交联聚合物正极材料的结构、制备、导电机理和电化学性能。重点介绍了自由基聚合物氮氧结构的特点和快速充放电性能，导电聚合物的合成方法和掺杂机理，以及有机多硫聚合物和多骨架碳硫交联聚合物中—(S—S)n—键的高效储能特性和超高比容量性质。最后提出了解决聚合物材料容量的衰减和易降解性以保证稳定的循环性能以及完善合成及制备工艺是未来的研究重点。

Research development on polymer cathode material for lithium ion batteries

In recent years, the lithium polymeric cathode materials with high energy storage capability are hot research topics in the field of new electrochemical energy. In this paper, we introduced the structure, preparation，conductive mechanism and electrochemical properties of the radical polymers, conducting polymers, polysulfides and carbon-sulfur skeleton cross-linked polymers. This review focused on the characteristics of nitrogen-oxygen structure and high charging/discharging efficiency for radical polymers, as well as the synthesis methods and doping mechanisms for conducting polymers. Besides, the excellent storage capability of—(S—S)n— bond for polysulfides and carbon-sulfur skeleton cross-linked polymers was emphasized, that could result in an ultra high specific capacity for lithium batteries. Finally we pointed out that the tackling of capacity attenuation and degradability of polymeric cathode materials to ensure the cycling stability and optimization of synthesis and preparation processes shall be the focuses of future research work.