METHOD FOR STABILIZING LiPF6, ELECTROLYTE SOLUTION FOR NONAQUEOUS SECONDARY BATTERIES HAVING EXCELLENT THERMAL STABILITY, AND NONAQUEOUS SECONDARY BATTERY HAVING EXCELLENT THERMAL STABILITY,申请号WO2013JP03736-传众专利搜索

METHOD FOR STABILIZING LiPF6, ELECTROLYTE SOLUTION FOR NONAQUEOUS SECONDARY BATTERIES HAVING EXCELLENT THERMAL STABILITY, AND NONAQUEOUS SECONDARY BATTERY HAVING EXCELLENT THERMAL STABILITY

申请公布号：WO2013187073(A1)

申请号：WO2013JP03736

申请日期：2013.06.13

申请公布日期：2013.12.19

申请人：

TOSOH F-TECH, INC.

发明人：AOKI, MASAHIRO;MIMURA, HIDEYUKI;EGUCHI, HISAO

分类号：C01B25/10;H01M10/052;H01M10/0567;H01M10/0568;H01M10/0569

主分类号：C01B25/10

摘要：[Problem] To provide: a method for stabilizing a solution that contains LiPF6 by increasing thermal stability of LiPF6 without changing the structure thereof; an electrolyte solution for nonaqueous secondary batteries, which has increased thermal stability; and a nonaqueous secondary battery which has increased thermal stability. [Solution] To have a solution containing LiPF6 contain a phosphoric acid ester amide represented by general formula (I) in such an amount that the molar ratio of the phosphoric acid ester amide relative to LiPF6 is 0.001-2. (In the formula, m represents an integer of 1 or 2; each of R1 and R2 represents a hydrocarbon group having an unsaturated bond and/or a branched or linear alkyl group having 1-6 carbon atoms, provided that R1 and R2 may have a substituent that is selected from the group consisting of an alkoxy group, an amino group, an alkylthio group, a saturated heterocyclic group, an unsaturated heterocyclic group and a fluorine atom, and R1 and R2 may combine together to form a 5-8 membered cyclic structure; and R3 represents a branched or linear alkyl group having 1-6 carbon atoms or a branched or linear fluorine-containing alkyl group having 1-6 carbon atoms.)