锂离子电池负极材料

  锂离子电池是由两种不同的能够可逆地嵌入及脱出锂离子的嵌锂化合物分别作为电池正极和负极组成的二次电池体系。石墨具备电子电导率高、锂离子扩散系数大、层状结构在嵌锂前后体积变化小、嵌锂容量高和嵌锂电位低等优点。经过颗粒球化及表面包覆处理后的天然鳞片石墨作为锂离子电池的负极材料,成为目前主流的商业化锂离子电池负极材料。

  At present mainly application is li-ion battery cathode materials ,carbon graphite material after particle spheroidizing and surface cladding, this process is used in the domestic and international markets widely. The lithium ion battery is composed of two different types of can reversibly embedding and emersion of lithium ion battery were the intercalated-li compounds as positive and negative composed of secondary battery system. Graphite have electronic conductivity high, lithium ion diffusion coefficient, lamellar structure in the intercalated-li volume change before and after the small, the intercalated-li capacity, high and the intercalated-li potential advantages. After grain spheroidizing and surface cladding process after the natural flake graphite as lithium ion battery cathode materials, become at present the mainstream commercial lithium ion battery cathode materials.