Invention Grant
- Patent Title: Method for producing negative electrode active material for lithium ion secondary battery
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Application No.: US15459132Application Date: 2017-03-15
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Publication No.: US10256464B2Publication Date: 2019-04-09
- Inventor: Norihiro Shimoi , Kazuyuki Tohji , Yasumitsu Tanaka , Qiwu Zhang , Hiroyuki Kai
- Applicant: TOHOKU UNIVERSITY , DOWA HOLDINGS CO., LTD.
- Applicant Address: JP Miyagi JP Tokyo
- Assignee: TOHOKU UNIVERSITY,DOWA HOLDINGS CO., LTD.
- Current Assignee: TOHOKU UNIVERSITY,DOWA HOLDINGS CO., LTD.
- Current Assignee Address: JP Miyagi JP Tokyo
- Agency: Clark & Brody
- Priority: JP2013-075474 20130330; JP2013-178679 20130829; JP2014-157999 20140801
- Main IPC: H01M4/82
- IPC: H01M4/82 ; H01M4/38 ; C04B35/626 ; H01M10/0525 ; H01M4/485 ; H01M4/36 ; C04B35/58 ; C01B33/32 ; H01M4/02 ; H01M10/052
Abstract:
A method for producing a negative electrode active material for a lithium ion secondary battery, comprising a step of charging either silicon and copper (II) oxide or silicon and copper metal in a pulverization device, pulverizing either the silicon and copper (II) oxide or silicon and copper metal, and simultaneously mixing either silicon and copper (II) oxide or silicon and copper metal thus pulverized. A negative electrode active material for a lithium ion secondary battery is produced by the method.
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