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Title:
NONAQUEOUS ELECTROLYTE SECONDARY CELL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2015/001871
Kind Code:
A1
Abstract:
The present invention provides a nonaqueous electrolyte secondary cell (10) that comprises the following: an electrode unit (50) comprising a positive electrode (64) and a negative electrode (84); and a nonaqueous electrolyte. The negative electrode (84) comprises a negative electrode current collector (82) and a negative electrode mix layer (86) that contains at least a negative electrode active substance and is formed on the surface of the negative electrode current collector (82). A coating film containing at least boron (B) and sodium (Na) is formed on the surface of the negative electrode active substance in the negative electrode mix layer (86), and assuming that A is the amount [µg/cm2] of sodium (Na) and B is the amount [µg/cm2] of boron (B) contained in the coating film per unit surface area of the negative electrode mix layer (86), the ratio A/B is less than 0.1.

Inventors:
ONIZUKA, Hiroshi (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
KONDO, Hiroki (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
MURAOKA, Hiroki (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
SANO, Hideki (1006 Oaza Kadoma, Kadoma-sh, Osaka 01, 〒5718501, JP)
Application Number:
JP2014/063941
Publication Date:
January 08, 2015
Filing Date:
May 27, 2014
Export Citation:
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Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
International Classes:
H01M10/052; H01M4/13; H01M4/139; H01M4/62; H01M10/0567; H01M10/058; H01M10/0587
Domestic Patent References:
WO2010082261A12010-07-22
Foreign References:
JP2009099285A2009-05-07
JP2005259592A2005-09-22
JP2013097973A2013-05-20
JPH02210769A1990-08-22
JP2010218970A2010-09-30
JP2012216547A2012-11-08
JP2014026932A2014-02-06
JP2005259592A2005-09-22
Other References:
See also references of EP 3018751A4
Attorney, Agent or Firm:
ABE Makoto (Kyodo Patent Law Firm, 47KT Bldg. 10th Floor, 3-20-3, Marunouchi, Naka-ku, Nagoya-sh, Aichi 02, 〒4600002, JP)
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