1. Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
2. Department
of Mechanical and Manufacturing Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
3. Ballard Power Systems, 9000 Glenlyon Parkway, Burnaby, British Columbia V5J 5J8, Canada