Cheng Kai Pan

US Patent:

20160359183, Dec 8, 2016

Filed:

Jul 25, 2016

Appl. No.:

15/218707

Inventors:

- Albany NY, US
Rebecca Isseroff - West Hempstead NY, US
Hongfei Li - Port Jefferson Station NY, US
Lee Blackburn - North Woodmere NY, US
Arthur Chen - North Woodmere NY, US
Andrew Chen - North Woodmere NY, US
Sneha Chittabathini - Hicksville NY, US
Alexandra Tse - North Woodmere NY, US
Cheng Pan - San Jose CA, US

International Classification:

H01M 8/1051
H01M 8/1039
H01L 51/44
C01B 31/04
C08J 5/22
H01L 51/42
H01M 8/1007
H01M 4/86

Abstract:

A polymer electrolyte membrane fuel cell that includes a positive electrode, a negative electrode, a polyelectrolyte membrane and a solution of reduced graphene oxide and/or graphene oxide functionalized with metallized nanoparticles. The electrodes are coated with a polymer and the polyelectrolyte membrane has a hydrophobic exterior surface that is subjected to ultraviolet/ozone (UV/O) exposure, which changes the hydrophobic, exterior surface to a hydrophilic exterior surface. The polyelectrolyte membrane is disposed between the positive electrode and the negative electrode and can include a sulfonated tetrafluoroethylene based fluoropolymer-copolymer. The solution forms a coating on the hydrophilic exterior surface of the polymer electrolyte membrane and the positive and negative electrodes. The positive and negative electrodes can be coated with a polymer, preferably polytetrafluoroethylene (PTFE) that can be subjected to ultraviolet/ozone (UV/O) exposure. The metallized nanoparticles increase the efficiency of the fuel cell by at least 50% when the feed gas includes at least 1000 ppm carbon monoxide.

US Patent:

20160043424, Feb 11, 2016

Filed:

May 28, 2015

Appl. No.:

14/724520

Inventors:

- Albany NY, US
Miriam Rafailovich - Plainview NY, US
Cheng Pan - San Jose CA, US

International Classification:

H01M 8/10

Abstract:

A proton exchange membrane fuel cell that includes: a positive electrode; a negative electrode; a polyelectrolyte membrane; and platelet-shaped nanoparticles of gold, platinum, palladium, silver, copper or their alloys or mixtures thereof. The polyelectrolyte membrane includes a sulfonated tetrafluoroethylene based fluoropolymer-copolymer and is disposed between the positive electrode and the negative electrode. The nanoparticles contact the surface of the proton exchange membrane increase the efficiency of the fuel cell by at least 50%.