Synthesis of W2N nanorods-graphene hybrid structure with enhanced oxygen reduction reaction performance
Synthesis of W2N nanorods-graphene hybrid structure with enhanced oxygen reduction reaction performance
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具有增强氧还原反应性能的W2N纳米棒-石墨烯杂化结构的合成
DOI：
10.1016/j.ijhydene.2017.08.126
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发表时间：
2017
影响因子：
7.2
通讯作者：
Wu Yucheng
中科院分区：
文献类型：
--
作者：
Xie Yan;Zhang Yong;Zhang Manru;Zhang Yu;Liu Jiaqin;Zhou Qi;Wang Wenfang;Cui Jiewu;Wang Yan;Chen Ying;Wang Zhaoming;Xie Ting;Wu Yucheng
In this work, a novel hybrid structure of tungsten nitride nanorods upon graphene nanosheets was obtained by synthesizing WOxnanorods/graphene oxide (GO) nanosheets followed by hydrogenation and nitridization treatment. Electron microscopy and X-ray diffraction results indicated that the hybrid was composed of W2N nanorods and reduced graphene oxide nanosheets. Surface chemical characteristics of the hybrid were characterized by X-ray photoelectron spectroscopy (XPS) and its electrocatalytic activities were evaluated using a rotating disk electrode measurement system. Compared to the WO3nanorods-GO hybrid, onset potential of the W2N nanorods-rGO hybrid for oxygen reduction reaction (ORR) was shifted from 0.6 V to 0.71 V, and the limiting current density increased by 1.4 times, exhibiting significantly enhanced electrocatalytic performance, which rendered the W2N-rGO hybrid as a potential non-precious-metal ORR catalyst in fuel cells and metal air battery applications.
