In the present work are reported the hydrogen generation performances of Long Period Stacking Ordered (LPSO) compounds with 18R, 14H and 10H-type structures by hydrolysis reaction in simulated seawater solution (35 g/L NaCl). LPSO compounds and LPSO + Mg alloys synthesized by induction melting are described in the light of their microstructural and electrochemical properties. Except for 10H type, all LPSO present improved H₂ generation features compared to pure Mg. Indeed, 80% of the reaction is achieved in less than 40 minutes. The highest generation yield of 90% is obtained for single phase LPSO Mg_87.6Ni_5.5Y_6.9. Alloys containing both Mg and LPSO beneficiate from galvanic coupling between the two phases leading to higher reactivity. The activation energies of 27.3 and 85.4 kJ/mol determined for Mg₉₁Ni₄Y₅ (14H + Mg) and Mg_83.3Cu_7.2Y_9.5 (18R) respectively clearly highlight this benefit from galvanic coupling.

在目前的工作中报道了具有 18R、14H 和 10H 型结构的长周期堆积有序 (LPSO) 化合物在模拟海水 (35 g/L NaCl) 中水解反应的产氢性能。通过感应熔炼合成的 LPSO 化合物和 LPSO + Mg 合金根据其显微结构和电化学性能进行了描述。除了 10H 型，与纯镁相比，所有 LPSO 都表现出改进的 H ₂代特征。事实上，80% 的反应是在不到 40 分钟的时间内完成的。单相LPSO Mg _87.6 Ni _5.5 Y _6.9生成率最高，可达90%. 含有 Mg 和 LPSO 的合金受益于两相之间的电偶耦合，从而导致更高的反应性。分别为 Mg ₉₁ Ni ₄ Y ₅ (14H + Mg) 和 Mg _83.3 Cu _7.2 Y _9.5 (18R)测定的 27.3 和 85.4 kJ/mol 的活化能清楚地突出了电流耦合的这种好处。