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Patent Searching and Data


Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2018174085
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a negative electrode active material capable of suppressing cubical expansion caused during charging.SOLUTION: A negative electrode active material for lithium ion secondary battery, including particles having at least one type selected from silicon or silicon oxide, and metal salt of uronic acid polymer existing on the particles, is taken as the negative electrode active material. Preferably, the metal salt of uronic acid polymer is at least one type selected from alkali metal salt, alkaline earth metal salt, Mg salt and Zn salt of uronic acid polymer.SELECTED DRAWING: None

Inventors:
YAMAMOTO YUJI
AKIMOTO KAZUMA
Application Number:
JP2017071833A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
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Assignee:
TDK CORP
International Classes:
H01M4/36; H01M4/38; H01M4/48
Attorney, Agent or Firm:
Sumio Tanai
Norihiko Ara
Masato Iida
Akihiro Ogino