1. Institute for Materials Chemistry and Engineering, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
2. Research & Innovation Center, Mitsubishi Heavy Industries, Minato-ku, Nagoya, Aichi 455-8515, Japan
3. Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Nishikasugai-gun, Aichi 480-0293, Japan
4. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan