@article{Huang2025, 
author = {Tianping Huang and Yingyan Zhao and Bolun Wang and Yinghui Li and Jiaqi Zhang and Xusheng Wang and Yanyue Wang and Hao Du and Manquan Fang and Jianxin Zou},
title = {MOFs derived Ni-Mn bimetal nano-catalysts with enhanced hydrogen pump effect for boosting hydrogen sorption performance of MgH2},
year = {2025},
journal = {Journal of Magnesium and Alloys},
volume = {13},
number = {11},
pages = {5589-5599},
keywords = {Magnesium hydride, Bimetallic catalyst, Catalytic modification, Hydrogen storage performance},
url = {https://www.sciopen.com/article/10.1016/j.jma.2024.11.008},
doi = {10.1016/j.jma.2024.11.008},
abstract = {In the present work, highly effective Ni-MnO binary nanocomposite catalysts were designed and synthesized using a one-pot method from Ni-Mn based bi-metal organic frameworks (MOFs). These nanocomposites were introduced into MgH2 through ball milling as catalysts to enhance the hydrogen storage properties of MgH2. Through varying the Ni/Mn ratio in the bimetal MOFs, it is found that the Ni1Mn1−MOF derived catalyst showed the best promotion effect on MgH2. The MgH2–10 wt.% Ni1Mn1−MOF derivative demonstrated favorable overall performance with the low desorption peak temperature (218.2 °C) with a saturated hydrogen capacity of 6.42 wt.% and rapid hydrogen release/uptake kinetics. It can still reabsorb about 1.15 wt.% H2 within 30 min at a temperature as low as 50 °C. Both performance tests (DSC and TPD) and structural characterizations (XRD, HRTEM, etc.) revealed that the synergistic role of in situ formed Mg6MnO8 and Mg2NiH4/Mg2Ni phases for improving the hydrogen sorption properties of MgH2. Theoretical calculations reveal that Mg6MnO8 destabilizes metal-H bonds in MgH2 and Mg2NiH4, leading to an enhanced “hydrogen pump” effect of Mg2NiH4 for MgH2. This research provides a strategy to rational design and preparation of bimetal MOF derivatives for the development of advanced hydrogen storage materials.}
}