Metal fuels have promising characteristics to store and trade renewable electricity. Indeed, their combustion releases the energy when it is needed while renewable electricity can be stored by reducing the combustion products (see figure attached). Particularly, iron powder features a high energy content, no carbon emissions, and is safe and abundant. Moreover, it burns in a particular combustion regime allowing easy capture of the solid iron oxides after combustion. My research aims to numerically understand the effects of introducing other elements than iron inside the powder during combustion.