The proton exchange membrane fuel cell (PEMFC) has shown great promise as a sustainable and highly distributed source of energy. However, currently available PEMFCs experience durability and performance degradation when hydrogen fuel that is derived from petroleum processing (gray hydrogen) is used. Whether intended or accidental, the presence of even minute quantities of hydrocarbons in fuel can negatively impact PEMFC performance through carbon monoxide poisoning of the electrode. Sufficient hydrocarbon to damage PEMFC electrodes can even be present as airborne contaminant in the surrounding air or other impurities within the fuel cell itself.