Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2013/187276
Kind Code:
A1
Abstract:
A secondary battery with a high capacitance retention rate associated with charge/discharge cycles is provided. This secondary battery is equipped with: an electrolytic solution that contains a lithium salt, a non-aqueous solvent capable of dissolving the lithium salt, and an additive; a positive electrode that contains a positive electrode active material into/from which lithium can be inserted/removed; and a negative electrode. A compound that has a peak in the 2,476eV to 2,479eV range of a sulfur K-edge X-ray absorption fine structure spectrum is formed on a surface of the positive electrode active material.
Inventors:
KOBAYASHI KENJI (JP)
INOUE KAZUHIKO (JP)
SAITHO SHINSAKU (JP)
HATAKEYAMA HIROSHI (JP)
KIMURA HIDEKAZU (JP)
INOUE KAZUHIKO (JP)
SAITHO SHINSAKU (JP)
HATAKEYAMA HIROSHI (JP)
KIMURA HIDEKAZU (JP)
Application Number:
PCT/JP2013/065375
Publication Date:
December 19, 2013
Filing Date:
June 03, 2013
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H01M10/0567; H01M4/131; H01M4/1391; H01M4/36; H01M4/505; H01M4/525; H01M10/052; H01M10/058
Domestic Patent References:
| WO2008133112A1 | 2008-11-06 | |||
| WO2012053485A1 | 2012-04-26 | |||
| WO2007007636A1 | 2007-01-18 | |||
| WO2011061999A1 | 2011-05-26 |
Foreign References:
| JP2007328992A | 2007-12-20 | |||
| JP2011066004A | 2011-03-31 | |||
| JP2006244776A | 2006-09-14 | |||
| JP2002190323A | 2002-07-05 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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