Title:
METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE
Document Type and Number:
WIPO Patent Application WO/2020/179523
Kind Code:
A1
Abstract:
The present invention is able to provide a method for producing a sulfide solid electrolyte, which is characterized by comprising: a solution forming step 1 wherein an Li-P-S homogeneous solution is prepared by mixing Li2S and P2S5 with each other in an organic solvent so that the Li2S/P2S5 molar ratio is from 0.7 to 1.5; a solution forming step 2 wherein an Li-Si-S homogeneous solution, which contains at least elemental lithium (Li), elemental silicon (Si) and elemental sulfur (S) in an organic solvent, is prepared; a solution mixing step wherein a homogeneous mixed solution is prepared by mixing the Li-P-S homogeneous solution and the Li-Si-S homogeneous solution with each other; a slurry forming step wherein a slurry is prepared by mixing the homogeneous mixed solution and Li2S with each other; a drying step wherein a precursor is obtained by removing the organic solvent from the slurry; and a heating step wherein a sulfide solid electrolyte is obtained by heating the precursor at 200-700°C.
Inventors:
ITO TOMOHIRO (JP)
Application Number:
PCT/JP2020/007280
Publication Date:
September 10, 2020
Filing Date:
February 25, 2020
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C01B17/00; C01B25/14; H01B13/00; H01M10/052; H01M10/0562
Domestic Patent References:
| WO2018173939A1 | 2018-09-27 |
Foreign References:
| JP2015232965A | 2015-12-24 | |||
| JP2020027780A | 2020-02-20 | |||
| JP5187703B2 | 2013-04-24 |
Other References:
ACTA CRYST., vol. B71, 2015, pages 727 - 736
NATURE ENERGY, vol. 1, 2016
See also references of EP 3936473A4
NATURE ENERGY, vol. 1, 2016
See also references of EP 3936473A4
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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