TY - JOUR
T1 - Fast hydrolysis and hydrogen generation on Al-Bi alloys and Al-Bi-C composites synthesized by high-pressure torsion
AU - Zhang, Fan
AU - Edalati, Kaveh
AU - Arita, Makoto
AU - Horita, Zenji
N1 - Funding Information:
One of the authors (FZ) would like to thank the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and China Scholarship Council (CSC) for a PhD scholarship. One of the authors (KE) thanks Kyushu University for the Qdai-Jump Research grant (No. 28325 ) and the MEXT , Japan, for a Grant-in-Aid for Scientific Research (B) (No. 16H04539 ). This study was supported in part by the Light Metals Educational Foundation of Japan, and in part by Grant-in-Aids for Scientific Research (S) and for Challenging Exploratory Research from the MEXT , Japan (No. 26220909 and 15K14183 ). The HPT process was carried out in the International Research Center on Giant Straining for Advanced Materials (IRC-GSAM) at Kyushu University. FZ was formerly with the Department of Materials Science and Engineering, Faculty of Engineering and the WPI, International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan.
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
PY - 2017/12/7
Y1 - 2017/12/7
N2 - Al-Bi alloys and Al-Bi-C composites with different compositions were synthesized by high-pressure torsion (HPT) and their hydrogen generation behavior via hydrolysis was investigated in contact with pure water. Bi was added to Al to enhance the effect of nano-galvanic cells and to promote the pitting corrosion, and C in the form of graphite was added to Al to accelerate the fragmentation of the composite and to increase the total active surface area. An optimized Al-30 wt%Bi-10 wt%C composition exhibited a hydrogen generation rate as fast as 270 ml min−1 g−1 in water and its total hydrogen generation amount reached the theoretical level at 333 K (all aluminum atoms reacted with water in less than 10 min and formed Al2O3).
AB - Al-Bi alloys and Al-Bi-C composites with different compositions were synthesized by high-pressure torsion (HPT) and their hydrogen generation behavior via hydrolysis was investigated in contact with pure water. Bi was added to Al to enhance the effect of nano-galvanic cells and to promote the pitting corrosion, and C in the form of graphite was added to Al to accelerate the fragmentation of the composite and to increase the total active surface area. An optimized Al-30 wt%Bi-10 wt%C composition exhibited a hydrogen generation rate as fast as 270 ml min−1 g−1 in water and its total hydrogen generation amount reached the theoretical level at 333 K (all aluminum atoms reacted with water in less than 10 min and formed Al2O3).
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U2 - 10.1016/j.ijhydene.2017.10.057
DO - 10.1016/j.ijhydene.2017.10.057
M3 - Article
AN - SCOPUS:85032798376
SN - 0360-3199
VL - 42
SP - 29121
EP - 29130
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 49
ER -
