摘要
随着电动汽车的普及和相关市场日益拓展,高能量密度的动力电池研究成为目前攻下能源领域科技制高点的关键。在锂电池正极材料趋于一致的情况下(三元材料或者磷酸铁锂),有效增大负极材料的比容量,是提高整体电池能量密度的有效手段。从时间维度来讲,工业化锂电池负极经历了碳、钛酸锂、硅基材料三代产品。目前,为了进一步提高电池的综合性能,满足电动汽车更长的行驶里程需求,理论比容量高的硅负极材料成为科研院所和能源企业的研究重点。
With the popularity of electric vehicles and the development of commercial markets,the research of lithium batteries with high energy density has become the key to make new breakthroughs in energy storage field.As the cathode materials of lithium battery tend to be consistent(ternary material or lithium iron phosphate),increasing the specific capacities of anode materials is an effective means to increase the energy densities of all batteries.In terms of time dimension,the anode materials of industrial lithium batteries have experienced three generations:carbon materials,lithium titanate and silicon-based materials.At present,in order to further improve the comprehensive performance of batteries and meet the longer driving mileage of electric vehicles,silicon anode materials with high theoretical specific capacity have become the research focus for both research institutes and energy enterprises.
作者
张成鹏
刘晓倩
刘文峥
ZHANG Chengpeng;LIU Xiaoqian;LIU Wenzheng(Henan Science and Technology Exchange Center,Zhengzhou Henan 450000)
出处
《河南科技》
2020年第31期141-143,共3页
Henan Science and Technology
关键词
锂电池
能量密度
硅碳负极材料
lithium batteries
energy density
silicon/carbon anode materials
