GAS DIFFUSION SUBSTRATE AND ELECTRODE

摘要

An electrically conducting gas diffusion substrate, capable of removing oxidisable impurities from an impure gas stream, which comprises an electrically conducting porous structure and a first catalytic component, wherein the first catalytic component comprises a first catalyst supported on an electrically non- conducting support is disclosed. In addition, an electrode, a membrane electrode assembly and a fuel cell each comprising said electricall y conducting gas diffusion substrate is disclosed.