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:
Oct. 11, 2011
Filed:
Aug. 25, 2010
Hung-chun Wu, Hsinchu, TW;
Ching-yi Su, Hsinchu, TW;
Ping-hsun Hsieh, Hsinchu, TW;
Bing-ming Lin, Hsinchu, TW;
Mo-hua Yang, Hsinchu, TW;
Nae-lih Wu, Taipei, TW;
Hung-Chun Wu, Hsinchu, TW;
Ching-Yi Su, Hsinchu, TW;
Ping-Hsun Hsieh, Hsinchu, TW;
Bing-Ming Lin, Hsinchu, TW;
Mo-Hua Yang, Hsinchu, TW;
Nae-Lih Wu, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A lithium ion secondary battery includes LiFePOas a major component of the positive electrode active material. In order to implement the high rate capability with 10 C/1 C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×10(mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.