Title:
SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/074741
Kind Code:
A1
Abstract:
Provided is a secondary battery having excellent cycle properties. This secondary battery is a solid-state battery having a positive electrode current collector layer, a base membrane, a positive electrode active substance layer, a buffer layer, and a solid electrolyte layer. The base membrane contains titanium nitride; the positive electrode active substance layer contains lithium cobalt oxide; the buffer layer contains titanium oxide; and the solid electrolyte layer contains a titanium compound. Moreover, by using titanium oxide for the buffer layer, side reaction between the positive electrode active substance layer and the solid electrolyte layer can be suppressed and cycle properties can be improved.
Inventors:
OGITA KAORI (JP)
KADOMA HIROSHI (JP)
HIROSE TOMOYA
YONEDA YUMIKO (JP)
IWAKI YUJI (JP)
TAKAHASHI TATSUYOSHI (JP)
YAMAZAKI SHUNPEI (JP)
KADOMA HIROSHI (JP)
HIROSE TOMOYA
YONEDA YUMIKO (JP)
IWAKI YUJI (JP)
TAKAHASHI TATSUYOSHI (JP)
YAMAZAKI SHUNPEI (JP)
Application Number:
PCT/IB2020/059349
Publication Date:
April 22, 2021
Filing Date:
October 06, 2020
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H01M4/131; H01M4/525; H01M4/64; H01M4/66; H01M10/052; H01M10/0562; H01M10/0585
Domestic Patent References:
| WO2010032159A1 | 2010-03-25 | |||
| WO2018220991A1 | 2018-12-06 |
Foreign References:
| JP2017529662A | 2017-10-05 | |||
| JP2016115617A | 2016-06-23 | |||
| JP2013062242A | 2013-04-04 | |||
| JP2013232284A | 2013-11-14 | |||
| CN108336302A | 2018-07-27 | |||
| US20170149093A1 | 2017-05-25 |
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