Invention Application
- Patent Title: NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK
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Application No.: US17024967Application Date: 2020-09-18
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Publication No.: US20210005863A1Publication Date: 2021-01-07
- Inventor: Toshitada NAKAZAWA , Dai YAMAMOTO , Masataka SHIKOTA , Aki HASEGAWA
- Applicant: KABUSHIKI KAISHA TOSHIBA
- Applicant Address: JP Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Tokyo
- Main IPC: H01M2/18
- IPC: H01M2/18 ; H01M2/16 ; H01M4/485 ; H01M10/0525

Abstract:
According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte. The negative electrode includes a negative electrode material layer including a titanium-containing oxide. A logarithmic differential pore volume distribution curve of the separator obtained by a mercury intrusion method includes a first peak at which a pore diameter is in the range from 0.02 μm to 0.15 μm and second peak at which the pore diameter is in the range from 1.5 μm to 30 μm. A ratio P2I/P1I of a second peak intensity to a first peak intensity is more than 1.00 and not more than 3.00. The pore specific surface area of the separator is 70 m2/g or more.
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