• aluminum-water reaction
• hydrogen generation
• Al activation method through galinstan

The current power generation sources, like carbon−based fuel, lead to a continuous emission of greenhouse gases, especially the carbon dioxide (CO2) increasing the Earth’s average surface temperature and causing the global warming.Hence it is retained to find a technology which can follow the global drivers for a sustainable energy like the reducing global anthropogenic carbon dioxide (CO2) emissions, improve the local air quality, ensure security of energy supply and create a new industrial and technological energy base.
Hydrogen and fuel cells are now widely regarded as an important clean energy vector and technology for the 21st century.Nevertheless, the main crucial barrier for the transition from fossil fuel energy system to hydrogen− based technology consists in the fact that hydrogen is characterized by very low density and poor compressibility so it is difficult to store. For that reason finding a method that could be able to provide an in−situ hydrogen generation represent a breakthrough to make hydrogen-base technology real.After that, questions such as:“ what can it be a low−cost, great and efficient method to generate hydrogen on demand?”, “ Is it possible to improve it? ” and “Under which conditions can it be more efficient? ”, arise.
The goal of this current work of thisis is to answer to all these questions. The hydrogen production method through metal-water reaction has been used. Aluminum has been chosen as the metal. However aluminum has a passive oxide film which covers its pure core that lead him to not react with water. The galinstan has been used to activate it because it embrittles and cracks the Al surface allowing the proceed of the reaction. Effects as reaction temperature, galinstan content and particle shapes and sizes have been studied.