电池2017，Vol.47Issue(1)：35-38,4.DOI:10.19535/j.1001-1579.2017.01.010
乙二醇双(丙腈)醚对高电压锂离子电池的影响
Effect of ethylene glycol bis (propionitrile) ether on high-voltage Li-ion battery
洪坤光 1周邵云 1余乐1
作者信息
- 1. 广州天赐高新材料股份有限公司 广东广州510760
- 折叠
摘要
Abstract
The electrochemical behaviors of ethylene glycol bis (propionitrile) ether (DENE) as an additive in electrolyte Li-ion battery were studied by linear sweep vohammetry (LSV) and electrochemical impedance spectroscopy (EIS).The surface morphology and elements distribution at the surface of electrodes were analyzed by SEM and X-ray energy spectrometer (EDS).The effect of DENE on 4.45 V high-voltage LiCoO2 Li-ion battery was investigated.The lithium cobalt oxide was analyzed by XRD.The dissolution of transition metal from cathode was inhibited and the SEI film on anode surface was stabilized by DENE,especially at high temperature,leading to the swelling decreased from 76.8％ to 12.3％ after storing at 60 ℃ for 30 d,the capacity retention ratio after 200 cycles(3.00-4.45 V) at 55 2 increased from 58.5 ％ to 86.3 ％.关键词
乙二醇双(丙腈)醚(DENE)/添加剂/电解液/高电压/锂离子电池Key words
ethylene glycol bis (propionitrile) ether(DENE)/additive/electrolyte/high-voltage/Li-ion battery分类
信息技术与安全科学引用本文复制引用
洪坤光,周邵云,余乐..乙二醇双(丙腈)醚对高电压锂离子电池的影响[J].电池,2017,47(1):35-38,4.
