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We demonstrate here a Fe, N, and S functionalized carbon (Fe/N/S-C) derived from an iron incorporated and p-toluenesulfonate doped polypyrrole precursor on a carbon support as an efficient catalyst for oxygen reduction reaction (ORR). Such a strategy could effectively suppress the formation of inferior activity metal species and less active oxidized type sulfur species. The as-synthesized Fe/N/S-C...
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