期刊
ELECTROCHIMICA ACTA
卷 273, 期 -, 页码 474-482出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.04.038
关键词
Hydrogen peroxide reduction reaction; Copper-cobalt based spinel; Electrochemically active surface area; And fuel cell
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2015M1A2A2054996, NRF-2016R1A2B2012061]
- Technology Development Program - Ministry of Science, ICT & Future Planning [NRF-2016M1A2A2940912]
- Dongguk University Research Fund
Nanostructured copper-cobalt based spinel [(Cu0.30Co0.70)Co2O4] was employed as an electrocatalyst in the hydrogen peroxide (H2O2) reduction reaction (HRR). Both nanoparticles and nanoneedles co-existed in the (Cu0.30Co0.70) Co2O4 spinel, which exhibited a high intrinsic electrical conductivity and surface-tovolume ratio, resulting therefore in a large electrochemically active surface area for the HRR. In addition, (Cu0.30Co0.70) Co2O4 showed an onset potential at approximately -0.14 V in the HRR, with a limiting current density of similar to 104 mA/cm(2) at 0.43 V. The synthesised material followed the direct HRR pathway and exhibited good stability. In addition, the HRR activity of (Cu0.30Co0.70) Co2O4 was comparable to that of commercial Pt/C electrodes. The present results therefore demonstrate the significant potential of (Cu0.30Co0.70) Co2O4 for future applications in fuel cells as a cathode catalyst. (c) 2018 Elsevier Ltd. All rights reserved.
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