Invention Application
- Patent Title: NONAQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY COMPRISING THE SAME
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Application No.: US17578467Application Date: 2022-01-19
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Publication No.: US20220231288A1Publication Date: 2022-07-21
- Inventor: Kiyoshi TANAAMI , Toshimitsu TANAKA , Yuji ISOGAI , Shintaro AOYAGI , Takuya TANIUCHI , Toshiyuki ARIGA
- 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: JP2021-006218 20210119
- Main IPC: H01M4/38
- IPC: H01M4/38 ; H01M4/66 ; H01M4/80

Abstract:
To provide a nonaqueous electrolyte secondary battery negative electrode which enables suppressing durability deterioration, improving cycle durability and energy density, and suppressing the rupture of the conductive paths of a current collector comprising a porous metal body in a region which is the boundary between a coated region with an electrode mixture and an uncoated region (electrode mixture boundary region) and a nonaqueous electrolyte secondary battery comprising the same. A nonaqueous electrolyte secondary battery negative electrode, comprising: a current collecting foil; a pair of current collectors disposed in contact with both surfaces of the current collecting foil and comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises: a negative electrode active material comprising a silicon-based material; a skeleton-forming agent containing a silicate having a siloxane bond; a conductive auxiliary; and a binder.
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