富锂锰基正极材料性能改性的研究进展
发布时间：2018-11-10 14:15
【摘要】：富锂锰基正极材料x Li_2MnO_3·(1-x)LiMO)2(M=Ni,Co或Mn)具有高比容量、低成本等优点,是下一代高比能锂离子电池正极材料有力竞争者。然而该材料也存在首次不可逆容量大,大功率下循环性能差等缺点。从富锂锰基正极材料的首次充放电容量、循环性能、倍率性能、阻抗分析等方面,重点讨论了包覆、掺杂、混合等改性方法对x Li_2MnO_3·(1-x)LiMO_2的电化学性能影响,指出了富锂锰基正极材料当前存在争议的问题,并展望了今后的改性研究工作。
[Abstract]:Lithium-rich manganese based cathode material x Li_2MnO_3 (1-x) LiMO) 2 (MN NiCo or Mn) has the advantages of high specific capacity and low cost, and is a strong competitor for the next generation of high specific energy lithium ion battery cathode materials. However, the material also has the shortcomings of large irreversible capacity for the first time and poor cycling performance under high power. The first charge and discharge capacity, cycle performance, rate performance, impedance analysis of lithium-rich manganese-rich cathode materials are discussed in detail. The effects of mixed modification methods on the electrochemical properties of x Li_2MnO_3 _ (1-x) LiMO_2 were discussed. The current controversial problems of lithium-rich manganese based cathode materials were pointed out, and the research work of modification in the future was prospected.
【作者单位】： 南京航空航天大学机械结构力学及控制国家重点实验室;上海空间电源研究所;
【基金】：江苏省科技成果转化项目(BA2013142) 航天SAST基金(2013-YF-2059) 江苏省自然科学基金(BK20130800) 中央高校基本科研业务费(NS2014054) 江苏高校优势学科建设工程资助项目
【分类号】：TM912
本文编号：2322692
[Abstract]:Lithium-rich manganese based cathode material x Li_2MnO_3 (1-x) LiMO) 2 (MN NiCo or Mn) has the advantages of high specific capacity and low cost, and is a strong competitor for the next generation of high specific energy lithium ion battery cathode materials. However, the material also has the shortcomings of large irreversible capacity for the first time and poor cycling performance under high power. The first charge and discharge capacity, cycle performance, rate performance, impedance analysis of lithium-rich manganese-rich cathode materials are discussed in detail. The effects of mixed modification methods on the electrochemical properties of x Li_2MnO_3 _ (1-x) LiMO_2 were discussed. The current controversial problems of lithium-rich manganese based cathode materials were pointed out, and the research work of modification in the future was prospected.
【作者单位】： 南京航空航天大学机械结构力学及控制国家重点实验室;上海空间电源研究所;
【基金】：江苏省科技成果转化项目(BA2013142) 航天SAST基金(2013-YF-2059) 江苏省自然科学基金(BK20130800) 中央高校基本科研业务费(NS2014054) 江苏高校优势学科建设工程资助项目
【分类号】：TM912
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