Enhancing (de)hydrogenation kinetics properties of the Mg/MgH2 system by adding ANi(5) (A = Ce, Nd, Pr, Sm, and Y) alloys via ball milling
作者:Liao, WF (Liao, Wenfang)[ 1 ] ; Jiang, WB (Jiang, Wenbin)[ 1 ] ; Yang, XS (Yang, Xu-Sheng)[ 3,4 ] ; Wang, H (Wang, Hui)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1,2 ] ; Zhu, M (Zhu, Min)[ 1,2 ]
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JOURNAL OF RARE EARTHS
卷: 39 期: 8 页: 1010-1016
DOI: 10.1016/j.jre.2020.07.020
出版年: AUG 2021
文献类型:Article
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摘要
Magnesium (Mg)-based alloys have already been widely studied as the hydrogen storage materials because of their high reversible hydrogen storage capacity, low cost, light weight, etc. However, the poor de/hydrogenation kinetic properties dramatically hinder the practical applications. In this work, the MgH2-ANi(5) (A = Ce, Nd, Pr, Sm, and Y) composites were prepared by a high-energy ball milling method, which can effectively refine the particle size thus improving the kinetic properties. Experimental results reveal that the MgH2-ANi(5) composites mainly consist of Mg2NiH4, MgH2 and rare earth (RE) hydride, which will be dehydrogenated to form Mg2Ni, Mg and stable RE hydride reversibly. Accordingly, the as-milled MgH2-ANi(5) (A = Ce, Nd, Pr, Sm, and Y) composites with various A-elements can respectively contribute to a reversible hydrogen storage capacity of 6.16 wt%, 5.7 wt%, 6.21 wt%, 6.38 wt%, and 6.5 wt% at a temperature of 300 degrees C, and show much better kinetic properties in comparison to the pure MgH2 without any additive. In-situ formed Mg2Ni and stable RE hydride (such as CeH2.73 and YH2) might act as effective catalysts to significantly improve the hydrogen storage properties of MgH2. The present work provides a guideline on improving the kinetic properties of the Mg-based hydrogen storage alloys. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
关键词
作者关键词:Mg-based hydrogen storage alloy; Kinetic properties; ANi(5); Additives; Rare earths
KeyWords Plus:HYDROGEN STORAGE PROPERTIES; SORPTION; MGH2; NI; THERMODYNAMICS; CO; PERFORMANCE; HYDRIDES; METALS; RE
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.
Hong Kong Polytechnic University Hong Kong Polytech Univ, Adv Mfg Technol Res Ctr, Dept Ind & Syst Engn, Hung Hom,Kowloon, Hong Kong, Peoples R China.
通讯作者地址: Ouyang, LZ (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.
通讯作者地址: Yang, XS (通讯作者)
显示更多 Hong Kong Polytech Univ, Adv Mfg Technol Res Ctr, Dept Ind & Syst Engn, Hung Hom,Kowloon, Hong Kong, 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
[ 2 ] China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
显示更多 [ 3 ] Hong Kong Polytech Univ, Adv Mfg Technol Res Ctr, Dept Ind & Syst Engn, Hung Hom,Kowloon, Hong Kong, Peoples R China
显示更多 [ 4 ] Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
电子邮件地址:xsyang@polyu.edu.hk; meouyang@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
2018YFB1502101
2019YFB1505101
National Natural Science Foundation of China (NSFC)
NSFC51621001
National Natural Science Foundation of China (NSFC)
51771075
51701171
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出版商
ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry
Web of Science 类别:Chemistry, Applied