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:
Sep. 15, 2020
Filed:
Apr. 03, 2017
Toyota Motor Engineering & Manufacturing North America, Inc., Erlanger, KY (US);
The University of Notre Dame, Notre Dame, IN (US);
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Kan Huang, Farmington Hills, MI (US);
Oscar Morales Collazo, Notre Dame, IN (US);
Joan Brennecke, Notre Dame, IN (US);
Hongfei Jia, Ann Arbor, MI (US);
Hisao Kato, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, Aichi-Ken, JP;
TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US);
THE UNIVERSITY OF NOTRE DAME, Notre Dame, IN (US);
Abstract
A secondary ionomer that enhances activity and stability of a cathode catalyst in a polymer electrolyte membrane fuel cell includes the ionic liquid, 1-methyl-2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidin-9-ium 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate ([MTBD][CFSO]). When contacting the catalyst, [MTBD][CFSO] enhances catalyst activity and stability more effectively than previously known ionomers, likely by preventing oxide formation and water adsorption at the catalyst surface. The disclosed secondary ionomer is thus most effective when completely coating the catalyst.