Kyushu team develops multifunctional catalyst for poison-resistant hydrogen fuel cells; both H2 and CO as
Kyushu team develops multifunctional catalyst for poison-resistant hydrogen fuel cells; both H2 and CO as fuel 25 June 2017 Researchers at Kyushu University, Japan, have developed the first catalyst that can oxidize both hydrogen and carbon monoxide, depending on the pH of the reaction system. Carbon monoxide is a common pollutant in commercially available hydrogen gas but it poisons the platinum catalysts used in today’s fuel cells. A paper on the work appears in the journal Angewandte Chemie International Edition . The new catalyst, based on a nickel-iridium [NiIr] complex, mimics the behavior of two enzymes: hydrogenase in acidic media (pH 4-7) and carbon monoxide dehydrogenase in basic media (pH 7-10). The team, led by Prof. Seiji Ogo, constructed a proof-of-concept fuel cell that turned the tables on carbon monoxide poisoning by using it as a fuel and generated energy...