A bicyclic pyrone-type species on oxygen-doped carbon catalysts was identified as the active site for the oxygen reduction reaction in acidic solution. It has much higher activity than that of typical nitrogen-doped carbon catalysts (0.219 s site 0.021-0.088 s site at 0.6 V). The -carbon atom in the carbonyl ring of the pyrone-type species was revealed as the reactive site by theoretical calculations.
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| http://dx.doi.org/10.1039/d2cc03093d | DOI Listing |
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