COMPOSITE LITHIUM SALT, POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY

Title:

COMPOSITE LITHIUM SALT, POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP2021157960

Kind Code:

A

Abstract:

To provide a composite lithium salt capable of suppressing a variation in battery capacity after pre-doping, and also to provide a lithium ion secondary battery in which a variation in battery capacity after pre-doping can be suppressed by a positive electrode using the composite lithium salt.SOLUTION: A composite lithium salt of the present invention is a composite lithium salt including a conductive assistant and a lithium salt disposed on the surface of the conductive assistant. The composite lithium salt is characterized in that the lithium salt includes at least one selected from the group consisting of lithium oxocarbonate, lithium ketomalonate, lithium ketosuccinate, lithium oxalate and lithium acetate, and the specific surface area of the conductive assistant is 100 m2/g or more and 1,500 m2/g or less.SELECTED DRAWING: Figure 1

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Inventors:

HASEGAWA TOMOHIKO
SATO ISANORI
KARIYADO HIROSHI
MORI TAKASHI

Application Number:

JP2020057295A

Publication Date:

October 07, 2021

Filing Date:

March 27, 2020

Export Citation:

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Assignee:

TDK CORP

International Classes:

H01M4/62

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