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Nanostructured copper-cobalt based spinel for the electrocatalytic H2O2 reduction reaction
- Authors
- Nath, Narayan Chandra Deb; Debnath, Trishna; Kim, Eun-Kyung; Shaikh, Md Aftab Ali; Lee, Jae-Joon
- Issue Date
- 20-May-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Hydrogen peroxide reduction reaction; Copper-cobalt based spinel; Electrochemically active surface area; And fuel cell
- Citation
- ELECTROCHIMICA ACTA, v.273, pp 474 - 482
- Pages
- 9
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 273
- Start Page
- 474
- End Page
- 482
- ISSN
- 0013-4686
1873-3859
- Abstract
- 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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Related Researcher
- Lee, Jae Joon
- College of Engineering (Department of Energy and Materials Engineering)