A study of the sodium tungsten bronzes for use as electrocatalysts in acid electrolyte fuel cells

Tungsten-based materials can play different roles in fuel cell systems. They are the only compounds which can be used as catalysts, co-catalysts, catalyst supports and electrolytes in different types of fuels cells. In particular, tungsten-based materials fulfill the requirements for their use as thermally stable carbon-alternative catalyst supports and Nafion®-alternative proton conducting electrolytes in fuel cells operating at intermediate temperature. In this work an overview of the use of tungsten-containing materials in fuel cells is presented.