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:
Mar. 26, 2002
Filed:
Jun. 01, 2000
Applicant:
Inventors:
Philippe Parmentier, Villeurbanne, FR;
Francois Beguin, Orleans, FR;
Elzbieta Frackowiak, Poznan, PL;
Assignee:
Messier-Bugatti, Velizy-Villacoublay, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/58 ;
U.S. Cl.
CPC ...
H01M 4/58 ;
Abstract
The carbon fibers present a mean lattice surface spacing (d ) not less than 0.36 nm, preferably 0.38 nm, at a crystallite size such that the mean height (L ) lies in the range 0.7 nm to 0.3 nm and the mean width (L ) lies in the range 2 nm to 6 nm, and it presents total porosity lying in the range 10% to 30%. The electrode is preferably a rayon-precursor carbon cloth and it constitutes the anode ( ) of a secondary cell having a cathode ( ) which includes lithium enabling lithium ions to be inserted and de-inserted, and an electrolyte ( ).