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Corresponding authors
a
Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail:
t-hirai@cstf.kyushu-u.ac.jp, takahara@cstf.kyushu-u.ac.jp
b
Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
c
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
d
Akron Ascent Innovations, LLC, 411 Wole Ledges Pkwy., Suite 105, Akron, Oh 4431, USA
e
Faculty of Engineering Science, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
f
Research Center for Synchrotron Light Applications, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
g
School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan