Citation: LIU Yang, LI Yuan, PENG Dan-Dan, GUO Liang-Liang, ZHANG Lu, HAN Shu-Min. Hydrogen Storage Properties of MgH₂-MoS₂-Pyrolyzed Polyaniline Composite[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(12): 2296-2302. doi: 10.11862/CJIC.2017.278 shu

Hydrogen Storage Properties of MgH₂-MoS₂-Pyrolyzed Polyaniline Composite

LIU Yang ^1,2 ,
LI Yuan ^2,, ,
PENG Dan-Dan ² ,
GUO Liang-Liang ² ,
ZHANG Lu ² ,
HAN Shu-Min ^1,2,,

1.
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
2.
Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China

Corresponding author: LI Yuan, liyuan@ysu.edu.cn HAN Shu-Min, hanshm@ysu.edu.cn
Received Date: 16 May 2017
Revised Date: 9 August 2017

Figures(9)

A composite of MgH₂-MoS₂-PP (PP=pyrolyzed polyaniline, w_MoS₂=w_PP=8.33%) was prepared by ball-milling. In comparison to pure MgH₂, the onset decomposition temperature of the composite decreases from 650 to 550 K and the hydrogen desorption content increases from 0.38% to 2.36% (w/w, the same below) at 573 K within 75 min. The composite can absorb 2.45% H₂ within 40 min, which is 2.13 times higher than that of the MgH₂ at 423 K. The apparent activation energy of the composite is 101.83 kJ·mol^-1, decreasing by 28.81 kJ·mol^-1 compared to MgH₂. The reason of superior hydrogen storage performance of the PP-MoS₂-MgH₂ composite is found to be that PP can effectively decrease the size of Mg particles and enhance the catalytic efficiency of MoS₂ in the desorption-resorption cycling.
- hydrogen storage material,
- magnesium hydride,
- composite,
- MoS₂,
- pyrolyzed polyaniline
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Hydrogen Storage Properties of MgH₂-MoS₂-Pyrolyzed Polyaniline Composite