Invention Grant
- Patent Title: Method of producing anode material for non-aqueous electrolyte secondary battery
- Patent Title (中): 制造非水电解质二次电池用负极材料的方法
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Application No.: US13188008Application Date: 2011-07-21
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Publication No.: US08945445B2Publication Date: 2015-02-03
- Inventor: Hajime Komatsu , Kenjiro Hara , Michihisa Miyahara
- Applicant: Hajime Komatsu , Kenjiro Hara , Michihisa Miyahara
- Applicant Address: JP
- Assignee: Kureha Corporation
- Current Assignee: Kureha Corporation
- Current Assignee Address: JP
- Agency: Cantor Colburn LLP
- Priority: JP2009-010750 20090121
- Main IPC: B28B1/00
- IPC: B28B1/00 ; H01M10/0525 ; C04B35/528 ; C04B35/626 ; H01M4/587

Abstract:
Provided is a method of producing an anode material for a non-aqueous electrolyte secondary battery having battery characteristics equivalent to those of a conventional product by simpler production steps than those of a conventional method.A thermally-polymerized petroleum based or coal based pitch is cooled to the softening point or below so that the pitch is solidified to obtain a solidified pitch. The solidified pitch is ground to form a fine pitch powder having an average particle size (median size) of 60 μm or smaller. Then, the fine pitch powder is compression molded at a pressure of 20 to 100 MPa or 0.1 to 6 MN/m to form a porous compression molded pitch. The porous compression molded pitch is subjected to infusibilization treatment.
Public/Granted literature
- US20120043684A1 METHOD OF PRODUCING ANODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2012-02-23
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