Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2019087487
Kind Code:
A
Abstract:
To enhance the cycle characteristics of a nonaqueous electrolyte secondary battery which includes silicon-containing particles and graphite particles as a negative electrode active material.SOLUTION: A nonaqueous electrolyte secondary battery comprises at least, a negative electrode 20, a positive electrode and an electrolyte solution. The electrolyte solution contains at least one kind selected from the group consisting of ethylene carbonate, fluoroethylene carbonate and vinylene carbonate. The negative electrode 20 includes at least a negative electrode mixture layer 22. The negative electrode mixture layer 22 includes, at least, silicon-containing particles 1 and graphite particles 2. In a log differential pore volume distribution of the negative electrode mixture layer 22, a ratio of a log differential pore volume when the pore diameter is 2 μm to a log differential pore volume when the pore diameter is 0.2 μm is 10.5 or more and 33.1 or less.SELECTED DRAWING: Figure 2
Inventors:
OSAWA RYOSUKE
TSUJIKO AKIRA
INOUE KAORU
TSUJIKO AKIRA
INOUE KAORU
Application Number:
JP2017216415A
Publication Date:
June 06, 2019
Filing Date:
November 09, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M4/13; H01M4/139; H01M4/36; H01M4/38; H01M4/48; H01M10/0569; H01M10/058
Domestic Patent References:
| JP2014089887A | 2014-05-15 |
Foreign References:
| US20160268591A1 | 2016-09-15 | |||
| WO2013099263A1 | 2013-07-04 |
Attorney, Agent or Firm:
Fukami patent office