TY - JOUR
T1 - Improved performance of hydrogen generation for Al–Bi-CNTs composite by spark plasma sintering
AU - Wang, Tao
AU - Xu, Fen
AU - Sun, Lixian
AU - Miao, Lei
AU - Liao, Lumin
AU - Wei, Sheng
AU - Yin, Qingqing
AU - Zhang, Kexiang
AU - Li, Yaying
AU - Wu, Yi
AU - Huang, Pengru
AU - Zhang, Huanzhi
AU - Li, Bin
AU - Chu, Hailiang
N1 - Funding Information:
This work was financially supported by the National Key Research and Development Program of China ( 2018YFB1502103 , 2018YFB1502105 ), the National Natural Science Foundation of China ( 51671062 , 51871065 and 51971068 ), the Scientific Research and Technology Development Program of Guangxi ( AA19182014 , 17195073 CE, AA17202030-1 , 171005-K ), Guangxi Bagui Scholar Foundation , Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials , Guangxi Advanced Functional Materials Foundation and Application Talents Small Highlands , Chinesisch-Deutsche Kooperationsgruppe ( GZ1528 ) and Innovation Project of GUET Graduate Education ( 2020YCXS112 ).
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - A new preparing method for Al-based hydrogen generation material has been proposed in this work. Al–Bi-CNTs materials have been prepared by the method of combination of both ball milling and spark plasma sintering (SPS). After SPS, the Al–Bi-CNTs materials change from a powder into a block. The influence of SPS on hydrogen generation performance of Al–Bi-CNTs block has been studied. The results indicate that the performances of hydrogen generation and antioxidant capacity of the block are higher than those of the powder. The conversion yield of Al-3.0 wt% Bi-5.0 wt% CNTs block reaches to 94.5% at a reaction temperature 343.15 K. However, the corresponding conversion yield of powder is only 46.1% at the same condition. Meanwhile, the block also shows a good oxidation resistance, such as its conversion yield is 65.8% of its original value after being exposed in air for 20 days. The conversion yield of powder, however, only retains 11.1% of its original value. The activation mechanism of SPS on Al based composite is also studied by XRD, SEM and TEM. In a word, the Al–Bi-CNTs block prepared by SPS is a suitable material to generate hydrogen for fuel cells.
AB - A new preparing method for Al-based hydrogen generation material has been proposed in this work. Al–Bi-CNTs materials have been prepared by the method of combination of both ball milling and spark plasma sintering (SPS). After SPS, the Al–Bi-CNTs materials change from a powder into a block. The influence of SPS on hydrogen generation performance of Al–Bi-CNTs block has been studied. The results indicate that the performances of hydrogen generation and antioxidant capacity of the block are higher than those of the powder. The conversion yield of Al-3.0 wt% Bi-5.0 wt% CNTs block reaches to 94.5% at a reaction temperature 343.15 K. However, the corresponding conversion yield of powder is only 46.1% at the same condition. Meanwhile, the block also shows a good oxidation resistance, such as its conversion yield is 65.8% of its original value after being exposed in air for 20 days. The conversion yield of powder, however, only retains 11.1% of its original value. The activation mechanism of SPS on Al based composite is also studied by XRD, SEM and TEM. In a word, the Al–Bi-CNTs block prepared by SPS is a suitable material to generate hydrogen for fuel cells.
KW - Al–Bi-CNTs composite
KW - Ball milling
KW - Hydrogen generation
KW - Mechanism
KW - SPS
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U2 - 10.1016/j.jallcom.2020.157925
DO - 10.1016/j.jallcom.2020.157925
M3 - Article
AN - SCOPUS:85096895653
VL - 860
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
M1 - 157925
ER -