@article{Yuan2024, 
author = {Zhenluo Yuan and Yuhang Wang and Xiuxiu Zhang and Shuyan Guan and Xiaojiao Wang and Liqiang Ji and Qiuming Peng and Shumin Han and Yanping Fan and Baozhong Liu},
title = {Catalytic effects of V- and O-species derived from PrF3/V2C for efficient hydrogen storage in MgH2},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {8},
pages = {7117-7125},
keywords = {reversibility, dehydrogenation, hydrogen storage materials, MgH2, cyclic stability},
url = {https://www.sciopen.com/article/10.1007/s12274-024-6550-4},
doi = {10.1007/s12274-024-6550-4},
abstract = {Magnesium hydride (MgH2) is considered as an ideal hydrogen storage material with excellent hydrogen capacity, but the slow kinetics impedes its application. Herein, an efficient additive of V2C MXene-anchored PrF3 nanoparticles (PrF3/V2C) was synthesized, which presents excellent catalytic effect in improving the reversibility and stability of hydrogen storage in MgH2. The initial dehydrogenation temperature of the 5 wt.% PrF3/V2C-containing MgH2 (182 °C) is 105 °C lower than that of pure MgH2, and 6.5 wt.% hydrogen is rapidly released from 5 wt.% PrF3/V2C-added MgH2 sample in 6 min at 240 °C. In addition, 5 wt.% PrF3/V2C-containing MgH2 sample possesses outstanding reversible hydrogen storage capability of 6.5 wt.% after 10 cycles of dehydrogenation and hydrogenation. Microstructure analysis shows that the introduction of Pr improves the stability of V-species (V0 and V2+) and O-species (lattice oxygen (OL) and vacancy oxygen (OV)) formed during ball milling, promotes the interaction between V-species and O-species, and enhances their reversibility, which contributes to the significant improvement in re/dehydrogenation reversibility and cycling stability of MgH2. This study provides effective ideas and strategies for the purpose of designing and fabricating high-efficient catalysts for solid-state hydrogen storage materials.}
}