The rapid coating method preparation and hydrogen production mechanism of Al−eutectic GaInSn alloy

The dense oxide film formed on aluminum alloys severely hinders their hydrolytic hydrogen production. In this study, a novel method for aluminum alloy preparation is proposed, wherein the aluminum surface is modified using a low-melting-point alloy. Pure aluminum is infiltrated into the liquid alloy GaInSn for rapid alloying, enabling the rapid breakdown of the oxide film on the aluminum surface. This process induces the reaction between aluminum and water, achieving a rapid and continuous hydrogen production process. Using complementary analyses, we reveal that: the influence of low melting point liquid eutectic alloys on the hydrolysis hydrogen production performance of aluminium alloys is researched. Additionally, a mechanistic model is established to elucidate their role in the aluminum alloy hydrolysis hydrogen production process. These studies enhance existing theoretical research and further clarify the role of low-melting-point metals.