| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5145155 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
In this work, a novel hybrid structure of tungsten nitride nanorods upon graphene nanosheets was obtained by synthesizing WOx nanorods/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 WO3 nanorods-GO hybrid, onset potential of the W2N nanorods-rGO hybrid for oxygen reduction reaction (ORR) was shifted from 0.6Â V to 0.71Â 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.
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Authors
Yan Xie, Yong Zhang, Manru Zhang, Yu Zhang, Jiaqin Liu, Qi Zhou, Wenfang Wang, Jiewu Cui, Yan Wang, Ying Chen, Zhaoming Wang, Ting Xie, Yucheng Wu,