Hydrogen absorption/desorption behaviors over a quaternary Mg-Ca-Li-N-H system

被引：22
|
作者：
Liu, Yongfeng
Xiong, Zhitao
Hu, Jianjiang
Wu, Guotao
Chen, Ping
Murata, Kenji
Sakata, Ko
机构：
[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
[2] Inst Appl Energy, Tokyo, Japan
来源：
JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 01期
关键词：
hydrogen storage; amide; imide; gas-solid reaction; P-C-T measurement;
D O I：
10.1016/j.jpowsour.2006.04.006
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hydrogen storage in a quaternary Mg-Ca-Li-N-H system has been investigated by XRD, FT-IR, TPD and PCI. Results showed that hydrogen desorption occurred at temperature about 50 degrees C, and peaked at similar to 178 degrees C under a heating rate of 2 degrees C min(-1). The reversibility of hydrogen storage was observed and the maximum hydrogen storage capacity of about 2.7 wt.% was reached at 220 degrees C and 75 atm. However, the plateau pressure for hydrogen desorption is relatively low (similar to 0.3 atm). Structural identifications reveal that a new phase with tetragonal structure positioned at 31.8 degrees and 51.3 degrees of XRD peaks was generated during hydrogen absorption/desorption. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：135 / 138
页数：4
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