The improvement of the hydrogen production rate and the hydrogen conversion ratio is crucial for hydrogen acquirement via Al-water reactions. Present work fabricated an Al-Ga-Gr hydrolyzing particle material, and presents the accelerated hydrolysis by ultrasound irradiation to achieve a high speed of hydrolysis and 100% yield within a short time, and provides a weak coupling model to address the acoustic pressure, velocity and thermal fields in the reactor. The obtained material is characterized with lamellar morphologies comprising AlGa solid solution and Gr. The hydrolysis is accelerated within the cavitation region by peeling off the reaction by-product layer to expose fresh aluminum, and deteriorates after the particle material traversing the cavitation/non-cavitation region boundary. Ultrasound promotes the hydrolysis progress from a diffusion governed mode to a dominated regime of interface reaction without a change to the activation energy.

氢生产率和氢转化率的提高对于通过Al-水反应获得氢至关重要。目前的工作制造了一种Al-Ga-Gr水解颗粒材料，并提出了通过超声辐照加速水解以在短时间内实现高速水解和100％收率的方法，并提供了弱耦合模型来解决声压，速度和反应堆中的热场。所获得的材料具有包括AlGa固溶体和Gr的层状形态的特征。通过剥离反应副产物层以暴露新鲜的铝，在空化区域内加速水解，并且在颗粒材料越过空化/非空化区域边界之后恶化。