Room temperature liquid metal activated Al-H2O reaction is a valuable method of achieving controllable, instant hydrogen generation. It avoids problems related to degradation of raw materials. In this study, the Ga-In-Sn-Bi alloy-activated Al-H2O reaction was demonstrated to be rate-stable with a hydrogen productivity of 92% and therefore superior to similar reactions activated by Ga-In and Ga-In-Sn alloys. To reveal the relevant activation mechanisms, the electrode potentials of three types of liquid metal alloys were tested. The effects of various liquid metal alloy compositions on hydrogen generation performance were determined via composition analysis and elemental characterization of the used reaction materials. The effects of several reaction conditions on hydrogen generation performance were evaluated. The reaction activation energy and by-product separation were also studied. It is feasible to provide a stable supply of hydrogen to a fuel cell and produce an output power of 0.73 W using a 3 g Al plate. Overall, the room-temperature Ga-In-Sn-Bi alloy-activated Al-H2O reaction can achieve real-time, on-demand hydrogen generation. This makes it a preferred choice to supply hydrogen to fuel cells.

中文翻译：

---

使用 Ga-In-Sn-Bi 合金活化的铝水反应即时制氢，用于氢燃料电池

室温液态金属活化的 Al-H2O 反应是一种实现可控、即时制氢的有价值的方法。它避免了与原材料降解相关的问题。在这项研究中，Ga-In-Sn-Bi 合金激活的 Al-H2O 反应被证明是速率稳定的，产氢率为 92%，因此优于 Ga-In 和 Ga-In-Sn 激活的类似反应合金。为了揭示相关的活化机制，测试了三种液态金属合金的电极电位。通过成分分析和所用反应材料的元素表征，确定了各种液态金属合金成分对产氢性能的影响。评价了几种反应条件对产氢性能的影响。还研究了反应活化能和副产物分离。为燃料电池提供稳定的氢气供应并使用 3 g 铝板产生 0.73 W 的输出功率是可行的。总体而言，室温 Ga-In-Sn-Bi 合金活化的 Al-H2O 反应可以实现实时、按需制氢。这使其成为向燃料电池供应氢气的首选。