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The Effects of Sn Element on Hydrogen Storage Characteristics of Mg2-xSnxNi(x=0, 0.05, 0.1, 0.15, 0.2) Alloys

Published online by Cambridge University Press:  26 February 2011

Jin Guo ,
Cunke Huang ,
Kun Yang ,
Guangxu Li  and
Weiqing Jiang
Jin Guo
Affiliation:
guojin@gxu.edu.cn, Guangxi University, College of Physics Science and Technology, 100 Daxuelu, Nanning, N/A, China, People's Republic of
Cunke Huang
Affiliation:
guojin@gxu.edu.cn, Guangxi University, College of Physics Science and Technology, 100 Daxuelu, Nanning, 530004, China, People's Republic of
Kun Yang
Affiliation:
guojin@gxu.edu.cn, Guangxi University, College of Physics Science and Technology, 100 Daxuelu, Nanning, 530004, China, People's Republic of
Guangxu Li
Affiliation:
guojin@gxu.edu.cn, Guangxi University, College of Physics Science and Technology, 100 Daxuelu, Na nning, 530004, China, People's Republic of
Weiqing Jiang
Affiliation:
guojin@gux.edu.cn, Guangxi University, College of Physics Science and Technology, 100 Daxuelu, Nanning, 530004, China, People's Republic of
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Abstract

Mg2-xSnxNi (x=0, 0.05, 0.1, 0.15, 0.2) hydrogen storage alloys were prepared and the effects of substitution of Sn for Mg on hydrogen storage performances of the alloys were investigated. In the alloys, Mg2Ni is main phase and the amorphous degree increases gradually with amount of Sn content increasing. Partial substitution of Sn for Mg can change the temperature of hydrogen absorption reaction effectively. The Mg1.85Sn0.15Ni alloy absorbs hydrogen at about 330K which is about 80K lower than that of Mg2Ni alloy. Discharge capacity increases quickly with amount of substitution Sn for Mg increasing. Suitable amount of substitution of Sn for Mg and amorphous can improve the thermodynamic and electrochemical characteristics of hydrogen absorption reaction for Mg2Ni-based alloy.

Keywords

metalhydrogenationmechanical alloying
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 971: Symposium Z – Hydrogen Storage Technologies , 2006 , 0971-Z07-01
Copyright
Copyright © Materials Research Society 2007

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