Invention Grant
- Patent Title: Carbonaceous material for non-aqueous electrolyte secondary battery anode
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Application No.: US15502024Application Date: 2015-08-10
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Publication No.: US10424790B2Publication Date: 2019-09-24
- Inventor: Naohiro Sonobe , Kazuhiko Shimizu
- Applicant: Kureha Corporation
- Applicant Address: JP Tokyo
- Assignee: KUREHA CORPORATION
- Current Assignee: KUREHA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-163112 20140808
- International Application: PCT/JP2015/072668 WO 20150810
- International Announcement: WO2016/021738 WO 20160211
- Main IPC: H01M4/587
- IPC: H01M4/587 ; H01M4/133 ; H01M4/62 ; H01M4/66 ; H01M10/0525 ; C01B32/05 ; H01M4/02

Abstract:
An object of the present invention is to provide a non-aqueous electrolyte secondary battery which has a large charge/discharge capacity, has a small irreversible capacity, and is capable of effectively using an active material.This object can be achieved by a material for a non-aqueous electrolyte secondary battery anode; a specific surface area determined by a BET method being not greater than 30 m2/g; an atomic ratio (H/C) of hydrogen atoms to carbon atoms determined by elemental analysis being not greater than 0.1; an average particle size being not greater than 50 μm; and a diffraction intensity ratio (R-value) determined by Equation (1) being not greater than 1.25: (wherein Imax is a maximum value of a 002 diffraction intensity of carbon measured at an angle of diffraction (2θ) within a range of from 20 to 25° as determined by powder X-ray diffraction measured using CuKα rays; Imin is a minimum value of a diffraction intensity measured at an angle of diffraction (2θ) within a range of from 15 to 20° as determined by powder X-ray diffraction; and I35 is a diffraction intensity at an angle of diffraction (2θ) of 35° as determined by powder X-ray diffraction).
Public/Granted literature
- US20170237071A1 CARBONACEOUS MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY ANODE Public/Granted day:2017-08-17
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