## 4 Conclusions  
This study investigates the effects of reaction temperature, low-melting-point alloy phases Mg17 Al12 and Mg7 Zn3, and their concentrations on the hydrolytic hydrogen production performance of magnesium-based metals. Looking forward, we will continue to explore the impact of other low-melting-point alloy phases on the hydrolytic hydrogen behavior of magnesium-based metals. By incorporating low-melting-point alloy phases and elevating the reaction temperature, we aim to replace the high-cost and complex material preparation and aqueous solution modification processes required for hydrolytic hydrogen production from magnesium-based metals under ambient conditions. The main conclusions are as follows:  
1. Compared to the magnesium-based metal hydrolysis hydrogen production under ambient conditions, a high-temperature environment significantly reduces the adverse effects of hydrolysis by-products Mg(OH)\({}_{2}\) and partial MgO passivation films on the hydrogen production performance of magnesium-based metals. Under such conditions, the required induction time can be minimized to 96 s, and the complete reaction time is only 55 s. For Mg-Al and Mg-Zn alloys with the same elemental content, the hydrogen production performance of hydrolysis exhibits superior characteristics with increasing temperature.
2. The incorporation of low-melting-point alloy phases Mg17 Al12 and Mg7 Zn3 effectively provides a multitude of channels for water vapor to penetrate into the magnesium-based metal, significantly enhancing the hydrogen production performance compared to pure magnesium. This not only substantially reduces the required reaction temperature but also effectively improves the kinetics of hydrolytic hydrogen production. Specifically, the reaction temperature for Mg-Al alloys is reduced from 510 \({}^{\circ}\)C for pure Mg to 420 \({}^{\circ}\)C, while the reaction temperature for Mg-Zn alloys is markedly decreased to 300 \({}^{\circ}\)C.
3. In the Mg-Al alloy system, with an increase in aluminum content, the induction and reaction times are longest for the Mg-10 Al alloy and shortest for the Mg-30 Al alloy under identical reaction temperatures. Similarly, in the Mg-Zn alloy system, with an increase in zinc content, the induction and reaction times are longest for the Mg-10 Zn alloy and shortest for the Mg-30 Zn alloy under the same reaction temperature conditions.  
The results demonstrate that enhancing the hydrolytic hydrogen production performance of magnesium-based metals and alloys is feasible by elevating the reaction temperature and incorporating low-melting-point alloy phases.  
J.R.: investigation, formal analysis, visualization, data curation, writing--original draft. Z.Z.: investigation, formal analysis, visualization, data curation. Z.W.: investigation, formal analysis, visualization, data curation. S.Z.: investigation, formal analysis, visualization, data curation. Z.H.: review and editing, funding acquisition, supervision. L.M.: review and editing, data curation, supervision. All authors have read and agreed to the published version of the manuscript.  
The work received financial backing from the Key R&D and Transformation Plan of Science and Technology Department of Qinghai Province (No. 2022-GX-156).  
Not applicable.  
The raw data supporting the conclusions of this article will be made available by the authors on request.  
Conflicts of Interest: Author [PERSON] was employed by the company China National Nuclear Corporation 272 Uranium Industry Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.