High performance platinum single atom electrocatalyst for oxygen reduction reaction
説明
<jats:title>Abstract</jats:title><jats:p>For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/methanol tolerance for the cathodic oxygen reduction reaction. The acidic single-cell with such a catalyst as cathode delivers high performance, with power density up to 680 mW cm<jats:sup>−2</jats:sup> at 80 °C with a low platinum loading of 0.09 mg<jats:sub>Pt</jats:sub> cm<jats:sup>−2</jats:sup>, corresponding to a platinum utilization of 0.13 g<jats:sub>Pt</jats:sub> kW<jats:sup>−1</jats:sup> in the fuel cell. Good fuel cell durability is also observed. Theoretical calculations reveal that the main effective sites on such platinum single-atom electrocatalysts are single-pyridinic-nitrogen-atom-anchored single-platinum-atom centres, which are tolerant to carbon monoxide/methanol, but highly active for the oxygen reduction reaction.</jats:p>
収録刊行物
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- Nature Communications
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Nature Communications 8 (1), 15938-, 2017-07-24
Springer Science and Business Media LLC
