Title:
全固体電池
Document Type and Number:
Japanese Patent JP7386046
Kind Code:
B2
Abstract:
To provide means capable of suppressing the growth of metallic lithium dendrite at the outer peripheral edge of a negative electrode active material layer even in an all-solid battery having a laminated configuration where a positive electrode active material layer, a solid electrolyte layer and the negative electrode active material layer are laminated in this order.SOLUTION: An all-solid battery includes a power generation element including: a positive electrode; a negative electrode in which a negative electrode active material layer containing a negative electrode active material that contains metallic lithium or a lithium-containing alloy is disposed; and a solid electrolyte layer interposed between the positive and negative electrodes and containing a sulfide solid electrolyte. There is provided a dendrite suppression region in at least part of the outer peripheral edge of the solid electrolyte layer. On this occasion, the composition of the dendrite suppression region contains lithium (Li), phosphorous (P), sulfur (S) and oxygen (O), the atomic ratio (O/S ratio) of an oxygen (O) atom to a sulfur (S) atom is 0.4 or less or 0.8 or more, and the thickness of the region in a lamination direction is 1 μm or more.SELECTED DRAWING: Figure 2
Inventors:
Yoshifumi Mizuno
Akira Takaichi
Akira Takaichi
Application Number:
JP2019200155A
Publication Date:
November 24, 2023
Filing Date:
November 01, 2019
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
H01M10/052; H01M4/134; H01M4/40; H01M10/0562; H01M10/0585
Domestic Patent References:
| JP2012160379A | ||||
| JP2015065029A | ||||
| JP2019096610A |
Foreign References:
| WO2013141241A1 |
Attorney, Agent or Firm:
IBC Ichibancho Patent Attorney Corporation