Highly-dispersed nano-TiB2 derived from the two-dimensional Ti3CN MXene for tailoring the kinetics and reversibility of the Li-Mg-B-H hydrogen storage material

An up-to-date review on the progress and challenges of hydrogen storage, and its safety and economic analysis

“…Xu, Deng, Liu, Zhao, Xu, and Yuan 94 found that the TiFe alloy can absorb theoretically 1.9% hydrogen at room temperature and low pressure. Luo, Yang, Lu, Li, Wang, Huang, Tao, Huang, Lan, Zhou, Guo, and Liu 95 used two-dimensional Ti 3 CN MXene to enhance the 2LiH + MgB 2 composite's performances for hydrogen storage. They found that the dehydrogenation and hydrogenation kinetics and the reversibility of the 2LiH + MgB 2 composite were drastically enhanced by the addition of Ti 3 CN.…”

From Back to Stage: Superior Cycling Stability of 2LiBH4−MgH2 Enabled by Anion Tuning

“…[8] Similar results can be observed in Li-RHC−MoCl 3 , [9] Li-RHC−NbCl 5 , [10] Li-RHC−K 2 TiF 6 , [11] and Li-RHC−NbF 5 . [12] Nevertheless, none of these previous works claimed cycling stability exceeded 20 loops, [13] and meanwhile this metal-cation tunning strategy has already approached its limit, even with exhausted multiphase or multiscale modulation. [5,11,13a,14] Therefore, it is urgent to propose a new perspective to further improve the hydrogen reaction kinetics and cycling stability of Li-RHC.…”

Insights into an Amorphous NiCoB Nanoparticle-Catalyzed MgH2 System for Hydrogen Storage

“…Hydrogen energy with high mass-energy density and non-pollution combustion products is conducive to liberate the energy dependence on fossil fuels and provide creativity for green energy development. , Hydrogen storage technology occupies an important position in the hydrogen energy industry. , The current hydrogen storage methods are mainly divided into high-pressure gaseous storage, hypothermal liquid storage, and solid-state storage. , Among them, storing hydrogen in solid-state materials allows operation at moderate pressures and temperatures with high hydrogen capacity. , For instance, MgH 2 as a representative metal hydride provides cracking features such as high storage capacity (7.6 wt %), high energy density (9 MJ/kg), superior reversibility, and low cost. − Unfortunately, the sluggish kinetics and poor thermodynamic stability pose a critical challenge to its further application. , Experimental results confirmed that these drawbacks could be addressed using strategies like nanosizing, , alloying, , and doping catalysts. − In terms of the catalyst design, it has been shown that the sluggish kinetics can be to some extent improved by the introduction of transition metals, − intermetallic compounds, , and carbon materials. − …”