Patent ID: 11923541
Assignee: ASAHI KASEL KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The lithium ion secondary battery according to claim 1, wherein the positive electrode active material layer contains at least one type of compound selected from the group consisting of compounds respectively represented by the following formulas (1) to (3) at a ratio of 3.8×10−9 mol/g to 3.0×10−2 mol/g per unit weight of the positive electrode active material layer:

LiX1—OR1O—X2Li  (1), (wherein, R1 represents an alkylene group having 1 to 4 carbon atoms or a halogenated alkylene group having 1 to 4 carbon atoms, and X1 and X2 respectively and independently represent a single bond or —(COO)—),

LiX1—OR1O—X2R2  (2), (wherein, R1 represents an alkylene group having 1 to 4 carbon atoms or halogenated alkylene group having 1 to 4 carbon atoms, R2 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, a monohydroxyalkyl group having 1 to 10 carbon atoms, a polyhydroxyalkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a monohydroxyalkenyl group having 2 to 10 carbon atoms, a polyhydroxyalkenyl group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an aryl group, and X1 and X2 respectively and independently represent a single bond or —(COO)—), and

R2X1—OR1O—X2R3  (3), (wherein, R1 represents an alkylene group having 1 to 4 carbon atoms or a halogenated alkylene group having 1 to 4 carbon atoms, R2 and R3 respectively and independently represent hydrogen, an alkyl group having 1 to 10 carbon atoms, a monohydroxyalkyl group having 1 to 10 carbon atoms, a polyhydroxyalkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a monohydroxyalkenyl group having 2 to 10 carbon atoms, a polyhydroxyalkenyl group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an aryl group, and X1 and X2 respectively and independently represent a single bond or —(COO)—).