多收费
电解质
电池(电)
电化学
二甲基乙酰胺
化学
阴极
离子
材料科学
有机化学
溶剂
电极
量子力学
物理
物理化学
功率(物理)
作者
Dmitry Belov,Mo‐Hua Yang
出处
期刊:ECS transactions
[The Electrochemical Society]
日期:2007-11-21
卷期号:6 (14): 29-44
被引量:5
摘要
A series of well-known overcharge protecting electrolyte additives for Li-ion batteries (diphenyl ether (PE), biphenyl (BP), cyclohexyl benzene (CHB) and N, N-dimethylacetamide (DMAC) were tested at equal conditions. A high energy density prismatic cell with LiCoO2 as a cathode was used. Overcharge additives in various concentrations in electrolyte (EC/PC/EMC, 1.1M LiPF6) were overcharged at 1C/12V conditions. The additives' influences on electrochemical cell performance were tested as well. None of the tested additives showed any notable improvements on battery safety during overcharge. Possible mechanisms of Li ion battery failure at overcharge will be discussed.
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