Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery
- Patent Title (中): 非水电解质二次电池
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Application No.: US12034441Application Date: 2008-02-20
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Publication No.: US08399127B2Publication Date: 2013-03-19
- Inventor: Masaki Deguchi , Tooru Matsui , Hiroshi Yoshizawa
- Applicant: Masaki Deguchi , Tooru Matsui , Hiroshi Yoshizawa
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2007-039326 20070220
- Main IPC: H01M10/40
- IPC: H01M10/40 ; H01M10/02

Abstract:
A nonaqueous electrolyte secondary battery, comprising a positive electrode having a positive-electrode active material layer reversibly inserting and extracting lithium ions on a positive-electrode current collector, a negative electrode having a negative-electrode active material layer reversibly inserting and extracting lithium ions on a negative-electrode current collector, and a nonaqueous electrolyte solution, wherein at least one of the positive and negative electrodes has a film on the surface and at least one of the positive electrode, the negative electrode and the nonaqueous electrolyte solution contains a nitrogen-containing cyclic compound. Such a nonaqueous electrolyte secondary battery is superior in high-temperature storage stability allowing preservation of favorable discharge rate even after high-temperature storage.
Public/Granted literature
- US20080199773A1 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2008-08-21
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