@article{Guan2026, 
author = {Haotian Guan and Jiang Liu and Qian Li and Yangfan Lu and Fusheng Pan},
title = {Chemically stable TMOx@Ti-MgO (TM = Mn and Cu) catalyst enhanced De/hydrogenation kinetics of Mg/MgH2},
year = {2026},
journal = {Journal of Magnesium and Alloys},
volume = {15},
number = {C},
keywords = {Ti-based catalyst, Mg/MgH2, hydrogen storage, hydrogen diffusion, nucleation},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.02.032},
doi = {10.1016/j.jma.2025.02.032},
abstract = {Ti-based catalysts have been identified to be efficient in enhancing hydrogenation and dehydrogenation (de/hydrogenation) kinetics of Mg/MgH2. However, their catalytic activity is constrained by the strong Ti‒H bond and chemical instability. Herein, we demonstrate that TMOx@Ti-MgO (TM = Mn and Cu) composite catalysts can simultaneously enhance hydrogen dissociation, diffusion and nucleation processes. MgH2 catalyzed by TMOx@Ti-MgO released 6.03−6.14 wt. % H2 within 5 min at 280 ℃ and 0.89−1.12 wt. % H2 within 60 min at 180 ℃. The partially oxidized Ti2+ and Ti3+ states are stabilized in MgO lattice, accelerating hydrogen adsorption, dissociation and diffusion processes. The TMOx, additionally, serve as the active center for nucleation, further improving de/hydrogenation reactions. The TMOx@Ti-MgO catalysts are characterized by high chemical stability, realizing improved cycle properties. These findings suggest a new approach to achieving controllable Catalyst-Hydrogen bond strengths and optimizing performance in de/hydrogenation reactions.}
}