Effect of Cu on dehydrogenation and thermal stability of amorphous Mg-Ce-Ni-Cu alloys
Effect of Cu on dehydrogenation and thermal stability of amorphous Mg-Ce-Ni-Cu alloys作者机构：School of Materials Science and Engineering Key Laboratory of Advanced Energy Storage Materials of Guangdong Province South China University of Technology
出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期：2017年第27卷第5期
页 面：622-626页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：financially supported by the Natural Science Foundation of China under grant No. 51471070 the Guangdong Natural Science Foundation (2014A030313222) supported by the Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2014) is also acknowledged
主 题：Hydrogen storage Mg-based amorphous alloy Hydrogenation kinetic Dehydrogenation temperature
摘 要：The alloying element component is very crucial in improving the hydrogen storage performance of amorphous *** this work,quaternary amorphous Mg70-xCe10Ni20Cux（x=3,7.5,10）alloys were prepared by meltspinning and the effect of Cu on hydrogenation and dehydrogenation were investigated in comparison with the Mg70-xCe10Ni20amorphous *** initial hydrogenation kinetics of amorphous Mg70-xCe10Ni20Cux（x=0,3,7.5,10）was improved with the increase of Cu content according to the kinetics measured at a temperature below crystallization *** hydrogen is absorbed,an amorphous-amorphous transition occurred,and relatively high Cu content would lead to phase separation in the hydrogenation *** phase have much higher crystallization temperature after it absorbs hydrogen and the addition of Cu could increase the crystallization activation energy of amorphous *** addition,the increase of Cu content could reduce the dehydrogenation temperature of amorphous hydrides,which gives a significant indication for future improving research of the hydrogen desorption performance of Mg based amorphous hydrides.
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