@article{He2026, 
author = {Shixuan He and Dongdong Li and Xingqing Duan and Jinting Chen and Bogu Liu and Yawei Li and Haixiang Huang and Haoyuan Zheng and XinHua Wang and Ying Wu},
title = {In-situ TiH/V8C7 from bimetallic TiVC MXene for enhanced hydrogen storage in the 2LiBH4-MgH2},
year = {2026},
journal = {Journal of Magnesium and Alloys},
volume = {14},
number = {C},
keywords = {LiBH4, MgH2, TiVC MXene, Catalysis, Hydrogen storage performance},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.09.030},
doi = {10.1016/j.jma.2025.09.030},
abstract = {Catalysis is an effective means to improve the slow kinetics of hydrogen absorption and desorption, as well as the poor cycle life of the 2LiBH4+MgH2 composite system. In this study, the TiVC MXene was obtained by etching TiVAlC and introduced into 2LiH + MgB2 by ball milling. Products obtained were heated and hydrogenated to prepare the 2LiBH4 + MgH2 (LMBH) system, which exhibits distinguished kinetic performance and capacity retention rate. In the LMBH + 6 wt% TiVC, a 9.3 wt% hydrogen is released within 35 min at 400 ℃ as well as hydrogenation is completed within 30 min at 350 ℃, 9 MPa. Moreover, the capacity retention rate was up to 96 % after the 15th cycle. During the heating and hydrogenation process, the TiH and V8C7 are generated in-situ as active products, and stably exist in the subsequent process to catalyze the hydrogen absorption-desorption reactions of the composite. The presence of TiH/LiH/V8C7/MgB2 interface improves the kinetic performance of the system. Reversibility is improved by inhibiting the generation of polyborane and the aggregation during the hydrogen absorption-desorption process. The interface structure-activity relationship is first elucidated that between bimetallic MXene and 2LiBH4 + MgH2 composite system during hydrogen absorption-desorption processes, providing a novel viewpoint and optimization path for the modification research of 2LiBH4 + MgH2 composites.}
}