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.:
Date of Patent:
Dec. 05, 2000
Filed:
Mar. 10, 1998
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
4292314 ; 4292318 ; 423439 ;
Abstract
This invention provides a lithium secondary battery comprising a positive electrode, and a negative electrode comprising a carbonaceous material which is capable of absorbing or desorbing lithium ion, wherein the carbonaceous material comprises 1 to 10% by weight of boron and 0.1 to 1% by weight of oxygen, and has an intensity ratio (P.sub.101 /P.sub.100) i.e., a ratio in intensity of a (101) diffraction peak P.sub.101 to a (100) diffraction peak P.sub.100 as measured by means of powder X-ray diffraction, of 2 or more.