1. Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
2. UTC Power, 195 Governor’s Highway, South Windsor, Connecticut 06074, United States
3. Toyota Motor Engineering & Manufacturing North America Inc., 1588 Woodridge Ave., Ann Arbor, Michigan 48105, United States
4. EMS Energy Institute and Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
5. Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States