Hydrogen storage properties of core-shell structured Mg@TM (TM = Co, V) composites. Lu, C., Zou, J., Zeng, X., & Ding, W. International Journal of Hydrogen Energy, 42(22):15246–15255, June, 2017. review-205
Paper doi abstract bibtex Target improving the hydrogen sorption properties of Mg, core-shell structured Mg@TM (TM = Co, V) composites were synthesized via an approach combining arc plasma method and electroless plating. The core-shell structures with the MgH2 core and V or Co containing hydride shells for hydrogenated Mg@TM particles were observed through HAADF-STEM and HRTEM techniques. The measured hydrogenation enthalpy (ΔHabs = −70.02 kJ/mol H2) and activation energy (Ea = 67.66 kJ/mol H2) of the ternary Mg@Co@V composite were lower than those of binary composites and the pure Mg powder. In addition, the onset dehydrogenation temperature for the hydrogenated ternary composite measured from DSC was 323 °C, about 60 °C lower than that of pure MgH2. On one hand, these improved properties can be attributed to the core-shell structure which may introduce more contacts between catalysts and Mg, thus providing more nucleation sites for hydrogen sorption. On the other hand, the co-effect of MgCo hydrides (Mg2CoH5&Mg3CoH5) acting as “hydrogen pump” and V2H accelerating the dissociation of H2 might also contribute to the improved hydrogen sorption properties of Mg.
@article{lu_hydrogen_2017,
title = {Hydrogen storage properties of core-shell structured {Mg}@{TM} ({TM} = {Co}, {V}) composites},
volume = {42},
issn = {0360-3199},
url = {https://www.sciencedirect.com/science/article/pii/S036031991731443X},
doi = {10.1016/j.ijhydene.2017.04.063},
abstract = {Target improving the hydrogen sorption properties of Mg, core-shell structured Mg@TM (TM = Co, V) composites were synthesized via an approach combining arc plasma method and electroless plating. The core-shell structures with the MgH2 core and V or Co containing hydride shells for hydrogenated Mg@TM particles were observed through HAADF-STEM and HRTEM techniques. The measured hydrogenation enthalpy (ΔHabs = −70.02 kJ/mol H2) and activation energy (Ea = 67.66 kJ/mol H2) of the ternary Mg@Co@V composite were lower than those of binary composites and the pure Mg powder. In addition, the onset dehydrogenation temperature for the hydrogenated ternary composite measured from DSC was 323 °C, about 60 °C lower than that of pure MgH2. On one hand, these improved properties can be attributed to the core-shell structure which may introduce more contacts between catalysts and Mg, thus providing more nucleation sites for hydrogen sorption. On the other hand, the co-effect of MgCo hydrides (Mg2CoH5\&Mg3CoH5) acting as “hydrogen pump” and V2H accelerating the dissociation of H2 might also contribute to the improved hydrogen sorption properties of Mg.},
language = {en},
number = {22},
urldate = {2023-03-13},
journal = {International Journal of Hydrogen Energy},
author = {Lu, Chong and Zou, Jianxin and Zeng, Xiaoqin and Ding, Wenjiang},
month = jun,
year = {2017},
note = {review-205},
keywords = {0},
pages = {15246--15255},
}
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