Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/063359
Kind Code:
A1
Abstract:
A lithium secondary battery according to the present disclosure includes a plurality of positive electrode layers, a plurality of negative electrode layers, and a plurality of separators, and comprises a laminate that is a sintered body in which the positive electrode layers and the negative electrode layers are alternately laminated with the separators therebetween. The laminate includes a first insulating layer and a second insulating layer. The first insulating layer is provided to a first end in the width direction of each of the positive electrode layers, and is provided in contact with the positive electrode layers. The second insulating layer is provided to a second end in the width direction of each of the negative electrode layers that is positioned on the opposite side in the width direction to the first end, and is provided in contact with the negative electrode layers. In the lithium secondary battery, (tave/T)×100≤30(%), where T is the external thickness of the laminate and tave is the average of the thickness of the first insulating layer and the thickness of the second insulating layer. This lithium secondary battery provides a lithium secondary battery that includes a sintered body and that can be produced stably and efficiently with a good production yield.
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Inventors:
OISHI KENGO (JP)
OKADA SHIGEKI (JP)
SHIMAOKA KEN (JP)
YURA YUKINOBU (JP)
OKADA SHIGEKI (JP)
SHIMAOKA KEN (JP)
YURA YUKINOBU (JP)
Application Number:
PCT/JP2022/038072
Publication Date:
April 20, 2023
Filing Date:
October 12, 2022
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
H01M10/0585; H01M10/052; H01M50/109; H01M50/531; H01M50/54
Domestic Patent References:
| WO2021090774A1 | 2021-05-14 | |||
| WO2020184476A1 | 2020-09-17 | |||
| WO2020195684A1 | 2020-10-01 |
Attorney, Agent or Firm:
KITANO Shuhei et al. (JP)
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