Title:
全固体リチウム電池
Document Type and Number:
Japanese Patent JP6906524
Kind Code:
B2
Abstract:
Provided is an all-solid-state lithium cell with good cell characteristics with which it is possible to significantly reduce the rate of increase in resistance during repeated use, even when a thick positive electrode plate comprising a sintered compact is used, whereby long-term reliability is greatly improved. This all-solid-state lithium cell is provided with: an independent oriented positive electrode plate having a thickness of 20 μm or more and comprising an oriented sintered body; a solid-state electrolyte layer constituted from a lithium ion conducting material; a negative electrode layer containing lithium; and a positive electrode collector, which is a metal foil having a thickness of 5-30 μm and which is in full-surface contact with the surface of the oriented positive electrode plate on the opposite side from the solid-state electrolyte layer in a non-adhesive state devoid of adhesive. This oriented positive electrode plate includes a plurality of crystal grains composed of a lithium composite oxide in which the oriented sintered body has a layered rock-salt structure, the plurality of crystal grains having the (003) plane oriented parallel to the plate surface of the oriented positive electrode plate.
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Inventors:
Yuki Fujita
Nobuyuki Kobayashi
Yuranobu
Nobuyuki Kobayashi
Yuranobu
Application Number:
JP2018531828A
Publication Date:
July 21, 2021
Filing Date:
July 20, 2017
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
H01M10/0585; H01M4/131; H01M4/525; H01M4/66; H01M10/052; H01M10/0562; H01M10/0565
Domestic Patent References:
| JP2003132887A | ||||
| JP2005243371A | ||||
| JP2016033880A | ||||
| JP2009181871A | ||||
| JP2011009103A | ||||
| JP2010212161A |
Foreign References:
| WO2015029289A1 | ||||
| WO2014162532A1 |
Attorney, Agent or Firm:
Masaharu Takamura
Hiroki Kashima
Yu Hasegawa
Hiroki Kashima
Yu Hasegawa