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Volume 38 Issue 8
Jul.  2021
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Article Contents
ZHAN Jing, LU Er-ju, CAI Meng, MA Ya-lin. Electrocatalytic performance of spherical NiO for ethanol oxidation[J]. Chinese Journal of Engineering, 2016, 38(8): 1139-1144. doi: 10.13374/j.issn2095-9389.2016.08.013
Citation: ZHAN Jing, LU Er-ju, CAI Meng, MA Ya-lin. Electrocatalytic performance of spherical NiO for ethanol oxidation[J]. Chinese Journal of Engineering, 2016, 38(8): 1139-1144. doi: 10.13374/j.issn2095-9389.2016.08.013

Electrocatalytic performance of spherical NiO for ethanol oxidation

doi: 10.13374/j.issn2095-9389.2016.08.013
  • Received Date: 2015-10-12
    Available Online: 2021-07-22
  • Spherical mesoporous NiO powders were synthesized by a hydrothermal-thermal decomposition method, and their morphology and structure were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption/desorption analysis. The electrocatalytic performance of NiO powders were systematically studied by cyclic vohammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). It is found that the prepared mesoporous NiO powders are in spherical morphology with a specific surface area of 35 m2·g-1 and an average pore size of 15.88 nm. They show good electrocatalytic activity for ethanol oxidation; the oxidation current increases with increasing ethanol concentration and scan rate. The current decay at 0.60 V for 1000 s is as low as 0.075%, indicating good stability. CV, CA and EIS measurements show that ethanol oxidation reaction on the spherical mesoporous NiO is a diffusion-controlled process.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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