无定形碳与石墨负极安全性能研究  

Safety studies on amorphous carbon and graphite anodes

作　　者：孔俊丽 KONG Jun-li(National Institute of Clean-and-Low-Carbon Energy,Beijing 102211,China)

机构地区：[1]北京低碳清洁能源研究院,北京102211

出　　处：《电源技术》2020年第11期1577-1579,1599,共4页Chinese Journal of Power Sources

摘　　要：随着锂离子电池在电子产品、电动汽车、储能等领域的广泛应用,锂离子电池安全事故频发,电极材料的安全性能研究引起了人们的关注。针对贝特瑞石墨818(BTR 818)负极与北京低碳清洁能源研究院无定形碳(NICE AC)负极,讨论材料的结构与储锂机理对锂离子扩散系数、电池内阻的影响,进一步分析电池产热和温度的差异,结果表明无定形碳具有优异的动力学,可以有效降低电池的产热与温度,具有更高的安全性。With the wide application of lithium ion batteries in electronic products,electric vehicles,energy storage and other fields,safety issues of lithium ion batteries have been widely reported,and the safety performance of electrode materials has attracted people's attention.The commercial BTR graphite 818(BTR 818)and NICE amorphous carbons(NICE AC)were studied from both materials structure and lithium storage mechanism.In detail,the influence of the material structure on the lithium ion diffusion coefficient and the internal resistance of the battery are discussed,and the difference of the heat generation and battery temperature is further analyzed.The results conform the NICE AC can reduce the heat generation and battery temperature effectively.The safety performance of NICE amorphous carbon is superior to BTR graphite 818.

关 键 词：无定形碳 石墨 结构 储锂机理 安全 

分 类 号：TM912.9[电气工程—电力电子与电力传动]