NON-AQUEOUS ELECTROLYTE AND ELECTROCHEMICAL DEVICE WITH AN IMPROVED SAFETY,申请号EP20070708960-传众专利搜索

NON-AQUEOUS ELECTROLYTE AND ELECTROCHEMICAL DEVICE WITH AN IMPROVED SAFETY

申请公布号：EP1994599(A4)

申请号：EP20070708960

申请日期：2007.02.15

申请公布日期：2010.05.26

申请人：

LG CHEM, LTD.

发明人：KIM, YOUNG-SOO;AHN, SOON-HO;HA, SOO-HYUN

分类号：H01M4/131;H01M4/48;H01M4/485;H01M10/0566;H01M10/0567;H01M10/0568;H01M10/0569

主分类号：H01M4/131

摘要：Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 1-10 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic mono-nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between a surface of a cathode active material and an aliphatic mono-nitrile compound; and a non-aqueous electrolyte containing 1-10 wt % of a compound of Formula 1 or its decomposition product based on the weight of the electrolyte. The electrochemical device has an excellent low-temperature battery performance and an excellent high-temperature safety, by a synergic effect, and also can provide excellent.