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. 12, 1996
Filed:
Sep. 15, 1994
Michikazu Hara, Yokohama, JP;
Asako Satoh, Yokohama, JP;
Norio Takami, Yokohama, JP;
Takahisa Ohsaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A lithium secondary battery with a large capacity and a long cycle life is disclosed. This lithium secondary battery includes a case, a negative electrode accommodated in the case and containing a polymeric material which has been formed by heat-treating a polymer having a perynaphthalene structure as a main repeating unit in a non-oxidizing atmosphere at 500.degree. to 1000.degree. C. and which absorbs and desorbs lithium ions, a positive electrode accommodated in the case and so arranged as to oppose the negative electrode with a separator sandwiched between them, and a nonaqueous electrolyte contained in the case.