Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6603097 | Electrochimica Acta | 2018 | 34 Pages |
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-to-volume 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 â0.14â¯V in the HRR, with a limiting current density of â¼104â¯mA/cm2 at â0.43â¯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.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Narayan Chandra Deb Nath, Trishna Debnath, Eun-Kyung Kim, Md Aftab Ali Shaikh, Jae-Joon Lee,