@article{Wang2026, 
author = {Xiaojiao Wang and Zhenluo Yuan and Yang Shi and Shangsheng Li and Guofa Mi and Qiuming Peng and Shumin Han and Yanping Fan and Baozhong Liu},
title = {Effective catalytic effects of Mo2C MXene on the hydrogen storage in magnesium hydride},
year = {2026},
journal = {Journal of Magnesium and Alloys},
volume = {16},
number = {C},
keywords = {Kinetics, Hydrogen storage, Mo2C MXene, MgH2, Hydriding/dehydriding},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.04.029},
doi = {10.1016/j.jma.2025.04.029},
abstract = {Magnesium hydride (MgH2) has received widespread attention because of its high hydrogen capacity and low cost, but the sluggish kinetics limited its practical application. Herein, the two-dimensional Mo2C MXene was constructed to motivate the efficient hydrogen storage in MgH2 for the first time. After doping 10 wt% Mo2C MXene, the starting dehydriding temperature was lowered to 225 ℃, presenting a 117 ℃ reduction compared with that of as-received MgH2. The 10 wt% Mo2C-containing MgH2 sample could rapidly release 6.7 wt% H2 in 13 min at 300 ℃, and the product after hydrogen release could absorb 6.0 wt% H2 in 12 min at 200 ℃, showing superior hydriding and dehydriding kinetics. Moreover, the activation energy (Ea) of MgH2–10 wt% Mo2C (107.58 ± 1.57 kJ/mol) was obviously lower than that of pure MgH2 (130.45 ± 1.97 kJ/mol), and the reduced activation energy explained the reduced dehydrogenation temperature and enhanced kinetics. Microstructure characterization revealed that Mo-species (Mo0 and Mo2+) formed during ball milling served as active species accelerated the hydriding/dehydriding reactions, and the uniformly distributed active species and the interaction between Mo and O jointly promoted the hydrogen storage properties of MgH2.}
}