Effectively incorporating iron, nitrogen, and sulfur functionalities on carbon surface for a superior electrocatalyst toward oxygen reduction reaction
Effectively incorporating iron, nitrogen, and sulfur functionalities on carbon surface for a superior electrocatalyst toward oxygen reduction reaction
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在碳表面有效结合铁、氮和硫官能团，为氧还原反应提供优异的电催化剂
DOI：
10.1016/j.elecom.2017.05.021
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发表时间：
2017-08-01
影响因子：
5.4
通讯作者：
Ma, Zi-Feng
中科院分区：
文献类型：
--
作者：
Zhang, Weimin;He, Yu-Shi;Ma, Zi-Feng
在这里，我们证明了Fe，N，和S功能化的碳（Fe/N/S-C）来自铁掺入和对甲苯磺酸盐掺杂的聚吡咯前体的碳载体作为一个有效的催化剂的氧还原反应（ORR）。这种策略可以有效地抑制低活性金属物种和活性较低的氧化型硫物种的形成。合成的Fe/N/S-C催化剂在低过电位范围内表现出与最先进的商业Pt/C催化剂相当的高的ORR催化活性，而在燃料电池操作电位范围内具有更好的催化活性。此外，该催化剂表现出更高的耐久性和更好的耐受醇燃料比Pt/C催化剂。
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 catalyst exhibited a highly catalytic activity for ORR which is comparable to the state-of-the-art commercial Pt/C catalyst at low overpotential range while have a better catalytic activity at the fuel cell operation potential range. In addition, this catalyst showed a higher durability and better tolerance to alcohol fuel than Pt/C catalyst.