Title:
NONAQUEOUS-ELECTROLYTE SECONDARY-BATTERY NEGATIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2015/115051
Kind Code:
A1
Abstract:
The purpose of this invention is to provide a nonaqueous-electrolyte secondary-battery negative electrode that minimizes gas production and improves output characteristics. Said negative electrode comprises a negative-electrode collector and a negative-electrode mixture layer provided so as to contact said negative-electrode collector. The negative-electrode mixture layer comprises a mixture of a negative-electrode active material, a binder, and a conductive agent. The negative-electrode active material contains silicon, and the binder comprises a binder (A) comprising a rubber-based macromolecular compound. If a thickness-direction cross-section of the negative-electrode mixture layer is divided in half into a collector-side region and a surface-side region, the collector-side region contains more of the aforementioned binder (A) then the surface-side region does, and the surface-side region contains more of the conductive agent than the collector-side region does.
Inventors:
SUGIMORI MASANORI
YANAGIDA KATSUNORI
YANAGIDA KATSUNORI
Application Number:
PCT/JP2015/000207
Publication Date:
August 06, 2015
Filing Date:
January 20, 2015
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M4/133; H01M4/13; H01M4/36; H01M4/48; H01M4/62
Domestic Patent References:
| WO2012132958A1 | 2012-10-04 |
Foreign References:
| JP2000012091A | 2000-01-14 | |||
| JP2007165108A | 2007-06-28 | |||
| JP2009004181A | 2009-01-08 | |||
| JP2014120330A | 2014-06-30 |
Attorney, Agent or Firm:
TOKUDA, Yoshiaki et al. (JP)
Yoshiaki Tokuda (JP)
Yoshiaki Tokuda (JP)
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