Invention Application
- Patent Title: ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY
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Application No.: US17581860Application Date: 2022-01-22
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Publication No.: US20220246944A1Publication Date: 2022-08-04
- Inventor: Kiyoshi TANAAMI , Toshimitsu TANAKA , Yuji ISOGAI , Masahiro OHTA , Takuya TANIUCHI
- Applicant: HONDA MOTOR CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: HONDA MOTOR CO., LTD.
- Current Assignee: HONDA MOTOR CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2021-012761 20210129
- Main IPC: H01M4/76
- IPC: H01M4/76 ; H01M4/36

Abstract:
Provided is an electrode for lithium ion secondary batteries in which an electrode material mixture is packed in porous metal, which electrode has excellent penetration of electrolyte solution and improved ion diffusivity. The electrode for lithium ion secondary batteries includes a current collector made of porous metal; and an electrode layer including an electrode material mixture including at least an electrode active material, in which the current collector is filled with the electrode material mixture, the current collector has an intermediate region and two surface regions in its thickness direction and m the electrode layer, the intermediate region has a porosity lower than that of the two surface region, and the intermediate region is filled with a first electrode active material, and the two surface regions are filled with a second electrode active material having a particle size larger than that of the first electrode active material.
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