1. Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 050-8585 Muroran, Japan
2. Department of Materials Science and Engineering, University of Utah, 84112 Salt Lake City, Utah, USA
3. Department of Mechanical and Aerospace Engineering, University of Virginia, 22904 Charlottesville, Virginia, USA
4. Department of Mechanical Engineering, Kyushu Institute of Technology, 804-0015 Kitakyushu, Japan
5. Electric Power Engineering Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), 240-0101 Yokosuka, Japan
6. Department of Chemistry, Aalto University, 00076 Espoo, Finland