Highly porous iron-nitrogen-doped hollow core mesoporous shell (Fe-N-HCMS) carbon is synthesized with regular mesopores, thus providing high surface area and large pore volume. Excellent mass transfer, durability, and methanol tolerance, in addition to high activity for the oxygen reduction reaction, are demonstrated. The limiting current density is the highest reported for non-precious-metal nitrogen-doped carbons.
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Zhou et al. (2014) studied this question.
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