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首页> 外文期刊>ChemElectroChem >Graphitic Carbon-NiCo Nanostructures as Efficient Non-Precious-Metal Electrocatalysts for the Oxygen Reduction Reaction
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Graphitic Carbon-NiCo Nanostructures as Efficient Non-Precious-Metal Electrocatalysts for the Oxygen Reduction Reaction

机译：石墨碳 - NiCO纳米结构作为氧还原反应的有效非珍贵金属电催化剂

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摘要

Composites of graphitic carbon layers and transition metals or metal alloys have received considerable attention for use as non-precious-metal catalysts for ecofriendly energy devices. In this paper, we report graphitic carbon-supported NiCo alloys (NiCo@GC) that function as non-precious-metal electrocatalysts for the oxygen reduction reaction under alkaline conditions. In particular, we examined the effect of the pyrolysis temperature on the oxygen reduction activity. The catalyst prepared at 600 degrees C provided an oxygen reduction half-wave potential (E-1/2) of 0.81 V - only 10 mV less than that of a commercial Pt/C catalyst (0.82 V) - with the transfer of almost four electrons. Structural and chemical studies indicated that the excellent activity and stability of the NiCo@GC catalysts resulted from the strong interactions between (and the combined effects of) the metal and the carbon, dictated by the annealing temperature.
机译：石墨碳层和过渡金属或金属合金的复合材料已经接受了适用于Ecofriendly能量装置的非珍贵金属催化剂的相当关注。 在本文中，我们报告了石墨碳支持的Nico合金（Nico @ GC），其用作碱性条件下的氧还原反应的非珍贵金属电催化剂。 特别是，我们检查了热解温对氧还原活性的影响。 在600℃下制备的催化剂提供0.81V-ock-ock的氧还原半波电位（E-1/2），仅比商业Pt / c催化剂（0.82V） - 转移差不多 电子。 结构和化学研究表明，NicO @ GC催化剂的优异活性和稳定性是由金属和碳的综合影响之间的强相互作用，由退火温度决定。

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