## 3 Results and Discussion
### Effects of Alloy Type and Temperature on Hydrolysis Hydrogen Generation
Consequently, the performance of hydrogen production through hydrolysis is significantly improved. Figure 7 illustrates the hydrolysis hydrogen production kinetics curves of Mg-10 Al, Mg-20 Al, and Mg-30 Al under various temperature conditions, respectively. The results indicate a strong dependence of the hydrolysis kinetics and hydrogen conversion rates of magnesium-based metallic materials on the composition, content, and temperature of the low-melting alloy phases. Specifically, Figure 7(a\({}_{1}\)-a\({}_{3}\)) show the hydrogen conversion rate curves of Mg-10 Al, Mg-20 Al, and Mg-30 Al under different temperature conditions. When the reaction temperature is 420 \({}^{\circ}\)C, hydrolysis does not occur for Mg-10 Al, resulting in a conversion rate of 0%. Furthermore, Mg-10 Al undergoes complete hydrolysis under reaction conditions at 430 \({}^{\circ}\)C, 460 \({}^{\circ}\)C, 490 \({}^{\circ}\)C, 520 \({}^{\circ}\)C, and 550 \({}^{\circ}\)C, with a hydrogen conversion rate of 89%. Additionally, Mg-20 Al and Mg-30 Al also undergo complete hydrolysis under reaction conditions at 420 \({}^{\circ}\)C, 430 \({}^{\circ}\)C, 460 \({}^{\circ}\)C, 490 \({}^{\circ}\)C, 520 \({}^{\circ}\)C, and 550 \({}^{\circ}\)C, with hydrogen conversion rates of 92% and 97%, respectively. Figure 7(b\({}_{1}\)-b\({}_{3}\)) depict the hydrolysis hydrogen production kinetics curves of Mg-10 Al, Mg-20 Al, and Mg-30 Al, respectively, under various temperature conditions. When Mg-10 Al is subjected to a reaction temperature of 420 \({}^{\circ}\)C, no hydrolysis reaction occurs, thus no data are generated for this condition. It is also evident that an increase in temperature has a significant impact on the hydrogen production rate. As the temperature rises, Mg-10 Al, Mg-20 Al, and Mg-30 Al all exhibit faster initial instantaneous hydrogen production rates with higher rate values, which is consistent with the effect of temperature on the hydrogen production performance of pure magnesium mentioned above. Furthermore, with the increase in the aluminum content, a transition is observed from Mg-10 Al not reacting at all at 420 \({}^{\circ}\)C to Mg-20 Al and Mg-30 Al being able to undergo complete hydrolysis for hydrogen production at the same temperature. Compared with pure magnesium in Figure 6, the incorporation of aluminum in Mg-based alloys directly reduces the critical reaction temperature from 520 \({}^{\circ}\)C for pure magnesium to 430 \({}^{\circ}\)C. Furthermore, as the aluminum content increases, the reaction temperature decreases from 430 \({}^{\circ}\)C for Mg-10 Al to 420 \({}^{\circ}\)C. The results indicate that with the incorporation and increase in aluminum content, the required temperature for hydrogen production through hydrolysis of magnesium-based metals can be effectively lowered, significantly enhancing the hydrogen production rate and improving the performance of hydrolysis hydrogen production. Figure 7(c\({}_{1}\)-c\({}_{3}\)) depict the temperature changes during the hydrolysis reactions of Mg-10 Al, Mg-20 Al, and Mg-30 Al, respectively. At 420 \({}^{\circ}\)C, Mg-10 Al does not undergo hydrolysis, resulting in insignificant temperature changes. However, when the reaction temperature is \(\geq\)420 \({}^{\circ}\)C, significant temperature changes are observed. The higher the initial temperature, the more rapid and intense the hydrolysis reaction, releasing more heat and resulting in a shorter time to reach the maximum temperature. Once the temperature peaks, the hydrolysis reaction immediately ceases, and the temperature drops linearly. Mg-20 Al and Mg-30 Al can undergo complete reactions within the temperature range of