Key findings
Comparison with other materials
Calcium metal flakes react rapidly but are difficult to control; MgH₂ tends to stop reacting due to formation of a dense Mg(OH)₂ surface layer. In contrast, the gas-atomized Ca–Mg eutectic powder balances high output, controllability, safety, and scalability of manufacture, making it an attractive candidate material for practical hydrogen generation.
Implications and future work
The powder is a promising material for portable hydrogen supply devices and emergency power units. Future work will investigate (1) the effect of using seawater instead of pure water, (2) stability and performance after long-term storage, and (3) safety measures and cost estimates for scale-up production.
Definitions
10.1016/j.ijhydene.2025.153319
Experimental study
Not applicable
Hydrogen generation through hydrolysis of gas-atomized Ca–Mg eutectic alloys
1-Jan-2026