1. School
of Materials Science and Engineering, Center for Innovative Fuel Cell
and Battery Technologies, Georgia Institute of Technology, 771 Ferst
Drive, Atlanta, Georgia 30332-0245, United States
2. Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400, United States
3. Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4 Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C.
4. New
Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China