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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8574533 B1

PDFFull Text
Expired
Date of Patent:
Nov. 05, 2013

Filed:

Mar. 25, 2005

Material for negative electrode of non-aqueous electrolyte secondary battery, process for producing the same, negative electrode and battery

Applicants:

Naohiro Sonobe, Fukushima-Ken, JP;

Hiroshi Ohta, Fukushima-Ken, JP;

Takahiro Akita, Fukushima-Ken, JP;

Inventors:

Naohiro Sonobe, Fukushima-Ken, JP;

Hiroshi Ohta, Fukushima-Ken, JP;

Takahiro Akita, Fukushima-Ken, JP;

Assignee:

Kureha Corporation, Tokyo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Guinever Gregorio

Int. Cl.
CPC ...
D01F 9/12 (2006.01); D01F 9/16 (2006.01); C01B 31/00 (2006.01); C01B 31/04 (2006.01); C01D 3/00 (2006.01); C09C 1/56 (2006.01); H01M 4/13 (2010.01); H01M 4/60 (2006.01); H01M 6/00 (2006.01); H01B 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A negative electrode material for non-aqueous electrolyte secondary batteries, comprises: a carbon material having a sphericity of at least 0.8, and exhibiting an average (002) interlayer spacing dof 0.365-0.400 nm, a crystallite size in a c-axis direction Lcof 1.0-3.0 nm, as measured by X-ray diffractometry, a hydrogen-to-carbon atomic ratio (H/C) of at most 0.1 as measured by elementary analysis, and an average particle size Dvof 1-20 μm. The negative electrode material is spherical and exhibits excellent performances including high output performance and durability.

Find Patent Forward Citations

Sonobe, Naohiro. (2013). Material for negative electrode of non-aqueous electrolyte secondary battery, process for producing the same, negative electrode and battery (U.S. Patent No. 8574533). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8574533

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