摘要
向锂离子电池电解液中添加氟代碳酸乙烯酯(FEC)作为添加剂,形成固体电解质膜(SEI)膜的性能更好,形成紧密结构层但又不增加阻抗,能阻止电解液进一步分解,可以提高电解液的低温性能。重点比较了添加FEC的电解液和不添加FEC的电解液在-10℃、-20℃下放电效率,电解液中添加5%的FEC电池的放电平台率保持率比不加FEC的电池明显提高,FEC作为锂离子电池电解液的添加剂使用,对锂离子电池的容量、平台、循环都具有较好的改善作用。
The performance of SEI formed of adding fluoroethylene carbonate（FEC） as additives to the lithium ion battery electrolyte is better.It＇s a tight structure layer and do not increase impedance.It also can prevent the electrolyte further decompose and improved the low temperature performance of electrolyte.Compared discharge efficiency of batteries that added FEC with don＇t add FEC in-10℃,-20℃,respectively.The results showed that voltage platform of discharge rate and retain ratio of batteries added 5% of FEC were higher than those did not add FEC.FEC as lithium ion battery electrolyte additives can improve lithium ion battery capacity,platform and cycle.
出处
《化工新型材料》
CAS
CSCD
北大核心
2011年第7期62-64,81,共4页
New Chemical Materials
