1. Computational Science Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado80401, United States
2. Global Fuel Cell Business, General Motors Company, 850 N Glenwood Avenue, Pontiac, Michigan48340, United States
3. Chemical and Materials Science Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado80401, United States
4. 3M Advanced Materials Division Laboratory, 3M Center, Saint Paul, Minnesota55144-1000, United States
5. 3M Corporate Research Materials Laboratory, 3M Center, Saint Paul, Minnesota55144-1000, United States