Exploring the Hydrogen-Induced Amorphization and Hydrogen Storage Reversibility of Y(Sc)(0.95)Ni-2 Laves Phase Compounds
作者:Zhao, SQ (Zhao, Shiqian)[ 1 ] ; Wang, H (Wang, Hui)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ]
MATERIALS
卷: 14 期: 2
文献号: 276
DOI: 10.3390/ma14020276
出版年: JAN 2021
文献类型:Article
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摘要
Rare-earth-based AB(2)-type compounds with Laves phase structure are readily subject to hydrogen-induced amorphization and disproportionation upon hydrogenation. In this work, we conducted the Sc alloying on Y0.95Ni2 to improve its hydrogen storage properties. The results show that the amorphization degree of Y0.95Ni2 deepens with the increasing hydrogenation time, pressure, and temperature. The Y(Sc)(0.95)Ni-2 ternary compounds show a significant improvement in reversibility and dehydriding thermodynamics due to the reduced atomic radius ratio R-A/R-B and cell volume. Hydrogen-induced amorphization is fully eliminated in the Y0.25Sc0.7Ni2. The Y0.25Sc0.7Ni2 delivers a reversible hydrogen storage capacity of 0.94 wt.% and the dissociation pressure of 0.095 MPa at the minimum dehydrogenation temperature of 100 degrees C.
关键词
作者关键词:hydrogen storage alloys; hydrogen-induced amorphization; Sc substitution; reversibility
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
通讯作者地址: Wang, H (通讯作者)
显示更多 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
电子邮件地址:201710103269@mail.scut.edu.cn; mehwang@scut.edu.cn; mejwliu@scut.edu.cn
基金资助致谢
基金资助机构显示详情 授权号
National Key R&D Program of China
2019YFB1502105
National Natural Science Foundation of China (NSFC)
U1601212
51871098
National Natural Science Foundation of China (NSFC)
51621001
National Natural Science Foundation of Guangdong Province
2016A030312011
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出版商
MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
类别 / 分类
研究方向:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering; Physics
Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter