Title:
POSITIVE ELECTRODE MATERIAL, ALL-SOLID-STATE BATTERY, AND METHOD FOR PRODUCING POSITIVE ELECTRODE MATERIAL AND ALL-SOLID-STATE BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/073466
Kind Code:
A1
Abstract:
Provided are: a positive electrode material that is chemically stable with respect to a solid sulfide electrolyte, and allows a discharge voltage to be increased; an all-solid-state battery; and a method for producing the positive electrode material and the all-solid-state battery. The positive electrode material contains a positive electrode active material and a solid sulfide electrolyte. The positive electrode active material contains a lithium composite oxide having a polyanion structure represented by the general formula, LiaMmXObFc (in the chemical formula: M represents at least one type of transition metal; X is at least one type of element selected from a group comprising B, Al, Si, P, Cl, Ti, V, Cr, Mo and W; a is a numerical value wherein 0 < a ≤ 3; m is a numerical value wherein 0 < m ≤ 2; b is a numerical value wherein 2 ≤ b ≤ 4; and c is a numerical value wherein 0 ≤ c ≤ 1). A sulfide that differs from the solid sulfide electrolyte exists on the interface between the positive electrode active material and the solid sulfide electrolyte. The all-solid-state battery (10) is provided with a positive electrode layer (11) comprising the abovementioned positive electrode material, a negative electrode layer (12), and a solid electrolyte layer (13) disposed between the positive electrode layer (11) and the negative electrode layer (12).
Inventors:
MATSUMURA TADAAKI (JP)
FUKUSHIMA MIKA (JP)
FUKUSHIMA MIKA (JP)
Application Number:
PCT/JP2013/079670
Publication Date:
May 15, 2014
Filing Date:
November 01, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M4/136; H01M4/131; H01M10/0585; H01M4/1391; H01M4/1397; H01M4/525; H01M4/58; H01M10/052; H01M10/0562
Foreign References:
| JP2012094445A | 2012-05-17 | |||
| JP2010267400A | 2010-11-25 | |||
| JP2011233246A | 2011-11-17 | |||
| JP2011165467A | 2011-08-25 | |||
| JP2012054212A | 2012-03-15 | |||
| JP2010073539A | 2010-04-02 | |||
| JP2012014892A | 2012-01-19 |
Attorney, Agent or Firm:
NAKAYAMA, KAZUTOSHI (JP)
Kazutoshi Nakayama (JP)
Kazutoshi Nakayama (JP)
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