Title:
LITHIUM-ION SECONDARY BATTERY ELECTRODE AND LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/228721
Kind Code:
A1
Abstract:
This electrode comprises a current collector, and a positive electrode active material layer (102) formed on the surface of the current collector. The surface area of the positive electrode active material layer (102) is at least 1 m2. The positive electrode active material layer (102) comprises a main surface positioned on the side opposite from the surface facing the current collector, and groove sections (103) opened to the main surface. In a plan view of the main surface, the maximum distance D, which is the maximum value of a specific distance, is 60 mm or less. The specific distance is the shorter distance among a distance from an outer peripheral edge of the positive electrode active material layer (102) and a distance from the groove sections (103) at any point in an island part (104), which is a section of the main surface where the groove sections (103) are not provided.
Inventors:
KONDO YUSHI (JP)
TANAKA TOSHIMITSU (JP)
TANAKA TOSHIMITSU (JP)
Application Number:
PCT/JP2023/017412
Publication Date:
November 30, 2023
Filing Date:
May 09, 2023
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H01M4/13
Domestic Patent References:
| WO1998048466A1 | 1998-10-29 |
Foreign References:
| JP2011233357A | 2011-11-17 | |||
| JP2005268045A | 2005-09-29 | |||
| JP2020136045A | 2020-08-31 | |||
| JP2023044903A | 2023-04-03 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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