Enhanced hydrogen storage properties of a Mg-Ag alloy with solid dissolution of indium: a comparative study

时间:2018-05-25作者:浏览量:50


标题

Enhanced hydrogen storage properties of a Mg-Ag alloy with solid dissolution of indium: a comparative study

作者

作者:Si, TZ (Si, Tingzhi)[1 ]; Cao, Y (Cao, Yu)[1 ]; Zhang, QG (Zhang, Qingan)[1 ]; Sun, DL (Sun, Dalin)[2 ]; Ouyang, LZ (Ouyang, Liuzhang)[3,4 ]; Zhu, M (Zhu, Min)[3,4 ]

期刊信息


JOURNAL OF MATERIALS CHEMISTRY A


卷:3

期:16

页:8581-8589

DOI:10.1039/c5ta00292c

出版年:2015

文献类型:Article

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摘要

A comparative study of Mg5.7In0.3Ag and Mg6Ag alloys was conducted to reveal the effects of indium (In) solid solutions on the hydrogen storage properties of Mg-based alloys. Different from the Mg6Ag alloy, the as-cast Mg5.7In0.3Ag alloy was composed of a Mg(In) solid solution and Mg3Ag. However, an initial hydrogen absorption/desorption treatment (i.e., activation) propelled the In atoms in Mg(In) toward Mg3Ag, forming (Mg, In)(3)Ag in the activated sample. This transformation involving the dissolution of In atoms from Mg into solid Mg3Ag not only greatly improved the thermodynamics of hydrogen desorption but also enhanced its catalytic effect on hydrogen desorption from additional MgH2. The (Mg, In)(3)Ag-H-2 system exhibited altered thermodynamics, as its enthalpy change of the hydrogen desorption was 62.6 kJ mol(-1) H-2. Moreover, the activation energy of the hydrogen desorption from the Mg5.7In0.3Ag sample was lowered to 78.2 kJ mol(-1).

关键词

KeyWords Plus:MAGNESIUM HYDRIDE; AL ALLOYS; DESORPTION; SYSTEM; DESTABILIZATION; ABSORPTION; KINETICS; NICKEL; DEHYDROGENATION; NANOPARTICLES

作者信息

作者信息

通讯作者地址:Zhang, QG (通讯作者)

显示更多Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China.


地址:

显示更多[ 1 ] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China
显示更多[ 2 ] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
显示更多[ 3 ] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
显示更多[ 4 ] S China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China


电子邮件地址:qazhang_ahut@163.com; meouyang@scut.edu.cn

出版商

ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND

类别分类

类别 / 分类

研究方向:Chemistry; Energy & Fuels; Materials Science

Web of Science 类别:Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary