标题
作者
作者:Lin, HJ (Lin, Huai-Jun)[1,2,3,6 ]; He, M (He, Min)[3 ]; Pan, SP (Pan, Shao-Peng)[4 ]; Gu, L (Gu, Lin)[3 ]; Li, HW (Li, Hai-Wen)[5 ]; Wang, H (Wang, Hui)[1 ]; Ouyang, LZ (Ouyang, Liu-Zhang)[1 ]; Liu, JW (Liu, Jiang-Wen)[1 ]; Ge, TP (Ge, Tian-Pei)[3 ]; Wang, DP (Wang, Dong-Peng)[3 ]
期刊信息
摘要
The exploration of favourable hydrogen storage materials is of great importance for the realization of a sustainable hydrogen energy society. Here, we report a hydrogen-induced glass-to-glass transition in Mg-based metallic glasses (MGs) with a storage capacity as high as 5 wt%-H. The hydrogen storage capacity of metallic glassy hydrides (MGHs) is obviously higher than that of their crystalline counterparts owing to the free volume and disordered atomic structure associated with glasses. The glass-to-glass transition is demonstrated by direct experimental observation using aberration-corrected scanning transmission electron microscopy combined with ab initio molecular dynamics simulations. Remarkably, the dehydrogenation temperature of the MGHs can be efficiently tuned as it shows a close relationship with the enthalpy of mixing between the alloying element and hydrogen, and can be decreased from similar to 350 degrees C to 150 degrees C when alloying with 5 at.%-Cu. MGs therefore have great potential as solid-state hydrogen storage materials. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词
作者关键词:Hydrogen storage; Glass-to-glass transition; Metallic glasses; HAADF-STEM; Enthalpy of mixing
作者信息
通讯作者地址:Zhu, M (通讯作者)
 | South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China. |
| Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China. |
地址:
电子邮件地址:whw@iphy.ac.cn; memzhu@scut.edu.cn
出版商
类别分类
研究方向:Materials Science; Metallurgy & Metallurgical Engineering
Web of Science 类别:Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering