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:
May. 28, 2002
Filed:
Oct. 28, 1999
Naoki Imachi, Sumoto, JP;
Yasunobu Kodama, Sumoto, JP;
Ichiro Yoshida, Sumoto, JP;
Ikuro Nakane, Sumoto, JP;
Satoshi Narukawa, Sumoto, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The invention provides a non-aqueous electrolyte cell having a high working voltage in a low temperature range of 0° C. or below and thereby attaining excellent low temperature discharge characteristics, a reduced internally-generated gas, and an excellent safety against heat. This is achieved by a cell comprising a non-aqueous electrolyte containing propylene carbonate and LiN(SO C F ) as an electrolyte salt, a graphite negative electrode, and a positive electrode having a positive electrode active material comprising a Ti-attached LiCoO in which a particle of titanium and/or titanium compound is attached on a surface of a particle of lithium cobalt oxide and a mole ratio of titanium and/or titanium compound in the Ti-attached LiCoO is within the range of from 0.00001 to 0.02.