Title:
リチウムイオン電池
Document Type and Number:
Japanese Patent JP5769279
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a lithium-ion battery that exhibits excellent long-term life properties, does not suffer from rapid capacity degradation, and exhibits excellent charging/discharging characteristics in low-temperature environments. The present invention is directed to a lithium ion battery comprising: a negative electrode which comprises a negative electrode active material containing at least one of a graphite and an amorphous carbon, conductive additives containing a graphite, and a binder; a nonaqueous electrolyte solution; and a positive electrode containing a positive electrode active material capable of occluding and releasing lithium. The negative electrode active material has a spherical or massive shape, the conductive additives have a platy shape, and a part of an edge surface of the conductive additives contacts a surface of the negative electrode active material. The nonaqueous electrolyte solution contains a solvent, and an additive which reductively decomposes at a voltage lower than a reduction voltage of the solvent.
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Inventors:
莇 丈史
Application Number:
JP2013523855A
Publication Date:
August 26, 2015
Filing Date:
May 15, 2012
Export Citation:
Assignee:
NEC Energy Device Co., Ltd.
International Classes:
H01M10/0567; H01M4/133; H01M4/587; H01M4/62; H01M10/0525
Domestic Patent References:
| JP2000226206A | ||||
| JP2004111109A | ||||
| JP2008192488A | ||||
| JP2004281368A | ||||
| JP2000133304A |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata