Title:
ELECTRODE AND ELECTRODE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/163186
Kind Code:
A1
Abstract:
Provided is an electrode with which tensile strength is improved by improving PTFE in-plane dispersibility. An electrode according to one embodiment of the present disclosure comprises: a core material; and an electrode combined material that is layered onto surfaces of the core material. The electrode combined material comprises an active substance and PTFE. In an image illustrating a composition distribution obtained upon measuring a surface of the electrode combined material using energy dispersion-type X-ray analysis, the standard deviation of the area ratio of PTFE in 30 adjacent sections having a size of 150 μｍ × 133 μｍ is 6% or less. When the electrode combined material is divided into three equal parts in the thickness direction to create, from the core material side, a first region, a second region, and a third region, the content (a) of PTFE in the first region, the content (b) of PTFE in the second region, and the content (c) of PTFE in the third region satisfy (c-a)/(a+b+c)≦±10%.
Inventors:
YAMASHITA HIROKI
IZUMI REIKO
KOTANI NORIHIRO
GONJO TAKAYUKI
IZUMI REIKO
KOTANI NORIHIRO
GONJO TAKAYUKI
Application Number:
PCT/JP2021/046307
Publication Date:
August 04, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/13; H01M4/139; H01M4/62
Domestic Patent References:
| WO2019512872A1 |
Foreign References:
| JP2019512872A | 2019-05-16 | |||
| JP2007026984A | 2007-02-01 | |||
| JP2020501338A | 2020-01-16 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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