Hydrazine fuel cells

Abstract Hydrazine as an oxidant for fuel cells is important for niche applications, as it can be stored in simple lightweight containers. In addition, their energy density is high — the fuel cells can be optimized for long‐term operation without any service. Hydrazine can be converted to hydrogen and nitrogen in an external reactor or the hydrazine is added to the electrolyte of the fuel cell and converted at special hydrazine electrodes. The catalyst for these electrodes is a modified nickel catalyst. Alsthom has shown the high power density (2 kg kW −1 ) of this fuel cell type in submarines.