1. Department
of Chemistry, State University of New York at Binghamton, Binghamton,
New York 13902, United States
2. Department of Physics, Central Michigan University, Mt. Pleasant, Michigan
48859, United States
3. EMS
Energy Institute, Department
of Energy and Mineral Engineering, and Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania
16802, United States
4. UTC Power, 195 Governor’s Highway, South Windsor,
Connecticut 06074,
United States