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. 30, 2006
Filed:
Oct. 15, 2002
Hisashi Tsukamoto, Saugus, CA (US);
Kaname Takeya, Stevenson Ranch, CA (US);
Hiroyuki Yumoto, Stevenson Ranch, CA (US);
M. Elizabeth Bush, Santa Clarita, CA (US);
Hisashi Tsukamoto, Saugus, CA (US);
Kaname Takeya, Stevenson Ranch, CA (US);
Hiroyuki Yumoto, Stevenson Ranch, CA (US);
M. Elizabeth Bush, Santa Clarita, CA (US);
Quallion LLC, Sylmar, CA (US);
Abstract
Disclosed is an improved type of fluorinated carbon (CF) for use in electrical storage devices such as batteries and capacitors. The CFis coated with a conductive material such as gold or carbon using vapor deposition. The resulting material exhibits better conductivity with concomitant lower impedance, higher electrical stability, and improved potential throughout the useful life of the device, as compared to uncoated CF. The improved conductivity reduces the amount of nonactive material (e.g., carbon black) that needs to be added, thus improving the volumetric energy density. In addition, cells made with the subject CFexhibit more constant voltages and higher overall voltage (2.0 volts with a lithium metal anode) throughout their useful life. Chemical or physical vapor deposition techniques to deposit a variety of metals or carbon may be used to create the improved CF. The coated CFmay be used in primary or secondary batteries, as well as capacitors and hybrid devices. Methods for making and using the coated CFare described.