M(salen)-derived nitrogen-doped M/C (M = Fe, Co, Ni) porous nanocomposites for electrocatalytic oxygen reduction.

M(salen)-derived nitrogen-doped M/C (M = Fe, Co, Ni) porous nanocomposites for electrocatalytic oxygen reduction.
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M(Salen) 衍生的氮掺杂 M/C(M = Fe、Co、Ni)多孔纳米复合材料用于电催化氧还原

DOI:
10.1038/srep04386
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发表时间:
2014-03-17
期刊:
影响因子:
4.6
通讯作者:
Chen J
Chen J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Du J;Cheng F;Wang S;Zhang T;Chen J

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含有非贵金属和/或掺杂氮的碳质材料在电化学能量存储和转换领域中引起了极大的关注。本文报道了一种新型氮掺杂金属/碳(M/N/C,M = Fe,Co,Ni)纳米复合材料的合成及其电化学性能。 所制备的Co/N/C和Fe/N/C催化剂具有良好的电催化活性(Fe/N/C的起始电位为0.96 V,Co/N/C的半波电位为0.80 V)和较高的氧还原稳定性。  纳米复合材料的上级性能归因于其双峰孔结构、高比表面积以及高密度氮和金属活性中心的均匀分布。
Carbonaceous materials containing non-precious metal and/or doped nitrogen have attracted tremendous attention in the field of electrochemical energy storage and conversion. Herein, we report the synthesis and electrochemical properties of a new family of nitrogen-doped metal/carbon (M/N/C, M = Fe, Co, Ni) nanocomposites. The prepared Co/N/C and Fe/N/C exhibit remarkable electrocatalytic activity (with onset potential of 0.96 V for Fe/N/C and half-wave potential of 0.80 V for Co/N/C) and high stability for the oxygen reduction reaction (ORR). The superior performance of the nanocomposites is attributed to their bimodal-pore structure, high surface area, as well as uniform distribution of high-density nitrogen and metal active sites.
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发表时间: 2013-02-20
期刊: ADVANCED MATERIALS
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