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:
Aug. 18, 2009
Filed:
Jan. 26, 2005
Siwen LI, Atlanta, GA (US);
Zhen Zhou, Atlanta, GA (US);
Meilin Liu, Alpharetta, GA (US);
Wen LI, Ann Arbor, MI (US);
Kohai Hase, Nagoya, JP;
Siwen Li, Atlanta, GA (US);
Zhen Zhou, Atlanta, GA (US);
Meilin Liu, Alpharetta, GA (US);
Wen Li, Ann Arbor, MI (US);
Kohai Hase, Nagoya, JP;
Georgia Institute of Technology, Atlanta, GA (US);
Toyota Motor Engineering & Manufacturing North America, Inc., Erlanger, KY (US);
Abstract
Polymers, polymer precursors, and other materials are described, having at least one heterocycle and being useful for fabrication of proton-exchange membranes (PEMs). In representative examples, the heterocycle is a fluorinated imidazole ring. The heterocycle can be chosen to have a low value of pKa, and may be a triazole ring, other nitrogen-containing heterocycle, or derivative thereof. Polymers and composites were prepared having excellent proton conductivity. Applications of these materials include fuel cells and other ion-conducting applications.