[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan
[2] Kyoto Univ, Elements Strategy Initiat Struct Mat ESISM, Sakyo Ku, Yoshida Honmachi, Kyoto 6068501, Japan
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi, Japan
[4] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
[5] Kyoto Univ, Elements Strategy Initiat Struct Mat ESISM, Kyoto, Japan
[6] Kyushu Univ, Res Ctr Hydrogen Ind Use & Storage HYDROGENIUS, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[7] Natl Inst Mat Sci, Res Ctr Struct Mat, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan