Title:
ALL-SOLID-STATE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/091983
Kind Code:
A1
Abstract:
Provided is an all-solid-state secondary battery which has improved discharge capacity and adopts a LiOH∙Li2SO4-based solid electrolyte. This all-solid-state secondary battery includes: a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; and a LiOH∙Li2SO4-based solid electrolyte which is interposed between the positive electrode and the negative electrode, and also incorporated in the inside of at least one among the positive electrode and the negative electrode. This all-solid-state secondary battery further includes an intermediate layer, which is composed of: a lithium composite oxide containing Li and at least one selected from the group consisting of Ti, La, Zr, Al, W, Nb, Sn, Ce, Mn, Y, and Ta; an oxide of Y; and/or an oxide of Al, on the boundary surface between the solid electrolyte and at least one among the positive electrode active material and the negative electrode active material, in at least one among the positive electrode and the negative electrode in which the solid electrolyte is incorporated.
Inventors:
ONISHI HARUNOBU (JP)
YAGI EN (JP)
KONDO TAKAYUKI (JP)
SATO YOSUKE (JP)
KOBAYASHI YOSHIMASA (JP)
YOSHIDA TOSHIHIRO (JP)
KATSUDA YUJI (JP)
TSUKADA TETSUYA (JP)
YAGI EN (JP)
KONDO TAKAYUKI (JP)
SATO YOSUKE (JP)
KOBAYASHI YOSHIMASA (JP)
YOSHIDA TOSHIHIRO (JP)
KATSUDA YUJI (JP)
TSUKADA TETSUYA (JP)
Application Number:
PCT/JP2021/039157
Publication Date:
May 05, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
H01M10/0562; H01M4/13; H01M4/36; H01M4/505; H01M4/525; H01M4/62; H01M10/052; H01M10/0585
Domestic Patent References:
| WO2019093222A1 | 2019-05-16 | |||
| WO2020194822A1 | 2020-10-01 |
Foreign References:
| JP2013062133A | 2013-04-04 | |||
| JP2011044368A | 2011-03-03 | |||
| JP2017004783A | 2017-01-05 | |||
| JP2012221887A | 2012-11-12 | |||
| JP2018502416A | 2018-01-25 | |||
| JP2020522854A | 2020-07-30 | |||
| JP2014067574A | 2014-04-17 | |||
| JPS4981898A | 1974-08-07 |
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
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