@article{Huang2024, 
author = {Gang Huang and Yao Lu and Xiaofang Liu and Wukui Tang and Xinyu Li and Feng Wang and Jianglan Shui and Ronghai Yu},
title = {Layered double hydroxide-derived Mg2Ni/TiH1.5 composite catalysts for enhancing hydrogen storage performance of MgH2},
year = {2024},
journal = {Journal of Magnesium and Alloys},
volume = {12},
number = {12},
pages = {4966-4975},
keywords = {Hydrogen storage materials, MgH2, Layered double hydroxides, Nanocatalysts},
url = {https://www.sciopen.com/article/10.1016/j.jma.2023.10.003},
doi = {10.1016/j.jma.2023.10.003},
abstract = {Developing efficient catalysts is of great significance in improving the sluggish kinetics and high desorption temperature of MgH2 hydrogen storage material. Here, ultrathin NiTi-layered double hydroxide (NiTi-LDH) nanosheets are used as precursors to prepare Mg2Ni/TiH1.5 composite catalysts to improve the hydrogen storage properties of MgH2. The variation of Ni/Ti ratio in LDH plays an important role in regulating the composition, morphology and distribution of Mg2Ni/TiH1.5 catalysts, which significantly affect their synergistic catalytic effect. Mg2Ni/TiH1.5 composite catalyst exhibits significantly improved catalytic performance compared with conventional Ni-, Ti- and Ni/Ti-based catalysts. The optimal MgH2/Mg2Ni/TiH1.5 system shows a significantly reduced desorption temperature of 212 ℃ which is 133 ℃ lower than that of pure MgH2 (345 ℃), and can release 5.97 wt% hydrogen within 300s at 300 ℃. Further mechanism analysis reveals that the unique flaky morphology and suitable composition of Ni/Ti LDH can significantly enhance the synergistic effect of Mg2Ni and TiH1.5, which promotes the fracture of the HH and Mg-H bonds.}
}