Invention Grant
- Patent Title: Positive active material for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery
- Patent Title (中): 非水电解质二次电池和非水电解质二次电池用正极活性物质
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Application No.: US13577659Application Date: 2011-02-16
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Publication No.: US09318742B2Publication Date: 2016-04-19
- Inventor: Yukiko Fujino , Yoshinobu Yasunaga , Toru Tabuchi , Tokuo Inamasu , Toshiyuki Nukuda
- Applicant: Yukiko Fujino , Yoshinobu Yasunaga , Toru Tabuchi , Tokuo Inamasu , Toshiyuki Nukuda
- Applicant Address: JP Kyoto
- Assignee: GS YUASA INTERNATIONAL LTD.
- Current Assignee: GS YUASA INTERNATIONAL LTD.
- Current Assignee Address: JP Kyoto
- Agency: Jianq Chyun IP Office
- Priority: JP2010-032238 20100217
- International Application: PCT/JP2011/053210 WO 20110216
- International Announcement: WO2011/102358 WO 20110825
- Main IPC: H01M4/583
- IPC: H01M4/583 ; H01M4/48 ; H01M4/52 ; H01M4/525 ; H01M4/58 ; C01B25/37 ; H01M4/36
Abstract:
An object is to provide a positive active material for nonaqueous electrolyte secondary battery, which is capable of providing a battery with excellent cycle performance. Provided are a positive active material for nonaqueous electrolyte secondary battery, which includes an Fe-containing lithium vanadium phosphate compound having a NASICON-type structure, wherein in the Fe-containing lithium vanadium phosphate compound, the percentage of iron atoms relative to the sum of vanadium and iron atoms is 2% or more and 20% or less; and the like.
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