Reaction pathways determined by mechanical milling process for dehydrogenation/hydrogenation of the LiNH(2)/MgH(2) system.
The dehydrogenation/hydrogenation processes of the LiNH(2)/MgH(2) (1:1) system were systematically investigated with respect to balller milling and the subsequent heating process. The reaction pathways for hydrogen desorption/absorption of the LiNH(2)/MgH(2) (1:1) system were found to depend strongly on the milling duration due to the presence of two competing reactions in different stages (i.e., the reaction between Mg(NH(2))(2) and MgH(2) and that between Mg(NH(2))(2) and LiH), caused by a metathesis reaction between LiNH(2) and MgH(2), which exhibits more the nature of solid-solid reactions. The study provides us with a new approach for the design of novel hydrogen storage systems and the improvement of hydrogen-storage performance of the amide/hydride systems.
Liang
Chu
C
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Liu
Yongfeng
Y
Luo
Kun
K
Li
Bo
B
Gao
Mingxia
M
Pan
Hongge
H
Wang
Qidong
Q