Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/056423
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a nonaqueous electrolyte secondary battery which has higher output characteristics than conventional nonaqueous electrolyte secondary batteries even after storage at high temperatures in a charged state.
The present invention is a nonaqueous electrolyte secondary battery which is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte, and wherein: an active material of the positive electrode comprises secondary particles, each of which is composed of aggregated primary particles that are formed of a lithium-containing transition metal oxide; each secondary particle has a surface layer region in which Mg is unevenly distributed and solid-solved; and a W compound adheres to the surfaces of the secondary particles and/or to the surfaces of the primary particles.
Inventors:
KAWAKITA AKIHIRO
OGASAWARA TAKESHI
JITO DAIZO
OGASAWARA TAKESHI
JITO DAIZO
Application Number:
PCT/JP2016/004185
Publication Date:
April 06, 2017
Filing Date:
September 14, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/485; H01M4/36
Foreign References:
| JP2014146473A | 2014-08-14 | |||
| JP2013229339A | 2013-11-07 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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