摘要
锂离子电池作为目前商业化应用最成熟的电化学储能载体之一,在消费电子、交通工具、储能电站领域得到广泛应用。组成锂离子电池的关键材料一般是正极、负极、电解液和隔膜,其中负极材料的选择决定电池能量密度、电化学性能、安全可靠性等各方面性能,因此近20年来,负极材料技术一直是新能源产业最热门的研发领域之一。根据负极材料产业化的时间顺序,基本上可以分为三代产品,分别为碳、钛酸锂和硅基材料。文中简要介绍了三代负极材料的结构特征、功能特点、改进方向等方面研发进展,对各类负极材料存在的不足和改性等方面的研究成果进行了评述。
As one of the most mature electrochemical energy storage carriers,lithium-ion battery has been widely used in the fields of consumer electronics,vehicles and energy storage power stations.The key materials of lithium-ion batteries are generally positive electrode,negative electrode,electrolyte and separator.The choice of negative material directly influences the performance of the battery in terms of energy density,electrochemical performance,safety and reliability,etc.Therefore,in recent two decades,negative electrode material technology has been one of the hottest research areas in the new energy industry.According to the time sequence of cathode material industrialization,it can be basically divided into three generations,namely carbon,lithium titanate and silicon-based materials.The paper briefly introduces the research and development progress in the aspects of structural characteristics,functional characteristics and improvement direction of the negative electrode materials,and summarizes the research achievements of various negative electrode materials.
作者
刘琪
郑德英
胡秋晨
朱陈平
LIU Qi;ZHENG De-ying;HU Qiu-chen;ZHU Chen-ping(Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi’an 710065,China)
出处
《陕西煤炭》
2020年第S01期21-24,46,共5页
Shaanxi Coal
基金
陕西省重点研发项目(2017ZDCXL-GY-08-03)。
关键词
锂离子电池
负极材料
碳材料
硅基负极
lithium ion battery
negative material
carbon material
silicon-based negative
