Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery and positive electrode active material for nonaqueous electrolyte secondary batteries
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Application No.: US14424304Application Date: 2013-08-29
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Publication No.: US10256461B2Publication Date: 2019-04-09
- Inventor: Atsushi Mizawa , Fumiharu Niina , Daisuke Nishide , Hiroyuki Fujimoto , Yoshinori Kida
- Applicant: SANYO Electric Co., Ltd.
- Applicant Address: JP Daito-shi
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Daito-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2012-211204 20120925; JP2013-013408 20130128
- International Application: PCT/JP2013/005099 WO 20130829
- International Announcement: WO2014/049964 WO 20140403
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/525 ; H01M4/131 ; C01G53/00 ; C01G33/00 ; H01M4/505 ; H01M4/02

Abstract:
A nonaqueous electrolyte secondary battery of the invention includes a positive electrode, a negative electrode and a nonaqueous electrolyte, the positive electrode including lithium transition metal oxide particles as a positive electrode active material, the lithium transition metal oxide particles containing nickel as a main transition metal component and being such that a first compound containing at least one element Ma selected from the group consisting of Group IV elements and Group V elements is sintered to a portion of the surface of the lithium transition metal oxide particles, the first compound having a composition different from that of the lithium transition metal oxide particles, the positive electrode further including a second compound containing at least one element Mb selected from the group consisting of Group VI elements, the second compound having a composition different from that of the lithium transition metal oxide particles.
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