Tuning hydrogen storage thermodynamic properties of ZrFe2 by partial substitution with rare earth element Y
作者:Qin, CS (Qin, Changsheng); Wang, H (Wang, Hui)[ 1 ] ; Liu, JW (Liu, Jiangwen); Ouyang, LZ (Ouyang, Liuzhang); Zhu, M (Zhu, Min)
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷: 46 期: 35 页: 18445-18452
DOI: 10.1016/j.ijhydene.2021.03.012
出版年: MAY 20 2021
文献类型:Article
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摘要
ZrFe2 delivers the advantages of high hydrogen storage capacity and easy activation, but its de-/hydriding pressure is too high for practical application. In this work, we alloyed ZrFe2 with Y to obtain a single C15 Laves phase structure by the proper annealing process. The microstructure and hydrogen storage properties of Zr1-xYxFe2 (x 1/4 0.1-0.4) compounds were investigated. The results show that the cell volume increases and the dissociation pressure decreases with increasing Y content for the Zr-Y-Fe-H system. The Y alloying is beneficial for increasing hydrogen storage capacity despite the worsening plateau slope and hysteresis. The Zr0.6Y0.4Fe2 exhibits the highest hydrogen absorption capacity of 1.77 wt%, while the Zr0.8Y0.2Fe2 shows a dehydriding enthalpy of 25.06 kJ/mol H2 and dehydriding entropy of 116.53 J/mol.K H2, corresponding to the dissociation pressure of 59 atm at 298 K that is suitable for high-pressure hydrogen storage applications. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词
作者关键词:Hydrogen storage materials; ZrFe2; Y alloying; Dissociation pressure
KeyWords Plus:EQUILIBRIUM PRESSURE; NEGATIVE ELECTRODE; METAL HYDRIDE; ALLOYS; ENERGY; MN; FE; TI; PERFORMANCES; KINETICS
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, 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, Guangzhou 510640, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
显示更多 [ 2 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址:mehwang@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
2019YFB1505101
National Natural Science Foundation of China (NSFC)
U1601212
National Natural Science Foundation of China (NSFC)
51621001
National Natural Science Foundation of Guangdong Province
2016A030312011
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出版商
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Electrochemistry; Energy & Fuels
Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels