Three-Dimensional Honeycomb-Like Cu0.81Co2.19O4 Nanosheet Arrays Supported by Ni Foam and Their High Efficiency as Oxygen Evolution Electrodes
Source abstract
Abstract
We prepare three-dimensional honeycomb-like Cu0.81Co2.19O4 nanosheet arrays supported by Ni foam via electrochemical codeposition of cobalt and copper hydroxides on Ni foam followed by thermal oxidation. The codeposition with Cu changes the morphology of the cobalt hydroxide deposit to form honeycomb-like nanostructures, significantly decreasing the onset potential for oxygen evolution. The Cu0.81Co2.19O4 anode displays an exceptionally low overpotential of 290 mV at a current density of 10 mA cm–2 in 1 M KOH, and an anion-exchange membrane water electrolysis cell employing the above anode achieves a current density of 100 mA cm–2 at 1.68 V in 0.1 M KOH.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Copper-based nanomaterials and applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Surface Technology Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
Advanced Materials Engineering, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
Department of Materials Science and Engineering, Pusan National University, Busan 46241, Republic of Korea
Hydrogen and Fuel Cell Center, New and Renewable Energy Institute, Korea Institute of Energy Research, Buan-gun 56332, Republic of Korea
Funding
Korean Institute of Materials Science
References (29)
Show source-provided references
1. 10.1038/451778a10.1038/451778a ↗
2. 10.1016/0254-0584(86)90045-310.1016/0254-0584(86)90045-3 ↗
3. 10.1002/cctc.20100012610.1002/cctc.201000126 ↗
4. 10.1021/ja509673310.1021/ja5096733 ↗
5. 10.1002/celc.20170039210.1002/celc.201700392 ↗
6. 10.1039/C8NR00764K10.1039/C8NR00764K ↗
7. 10.1021/ja106102b10.1021/ja106102b ↗
8. 10.1021/acscatal.5b0207610.1021/acscatal.5b02076 ↗
9. 10.1021/ja301018q10.1021/ja301018q ↗
10. 10.1002/aenm.20150231310.1002/aenm.201502313 ↗
11. 10.1021/acssuschemeng.8b0184110.1021/acssuschemeng.8b01841 ↗
12. 10.1039/C8CC02568A10.1039/C8CC02568A ↗
13. 10.1039/C7CC06668F10.1039/C7CC06668F ↗
14. 10.1039/C3EE42696C10.1039/C3EE42696C ↗
15. 10.1016/0022-0728(91)85440-Z10.1016/0022-0728(91)85440-Z ↗
16. 10.1016/j.ijhydene.2008.05.03210.1016/j.ijhydene.2008.05.032 ↗
17. 10.1039/c1jm11312g10.1039/c1jm11312g ↗
18. 10.1039/C4CC06100D10.1039/C4CC06100D ↗
19. 10.1038/ncomms761610.1038/ncomms7616 ↗
20. 10.1039/C5EE02463C10.1039/C5EE02463C ↗
21. 10.1039/C4CP02049A10.1039/C4CP02049A ↗
22. 10.1016/j.jeurceramsoc.2017.10.03810.1016/j.jeurceramsoc.2017.10.038 ↗
23. 10.1088/0022-3719/21/7/00710.1088/0022-3719/21/7/007 ↗
24. 10.1002/jrs.409810.1002/jrs.4098 ↗
25. 10.1149/1.233863110.1149/1.2338631 ↗
26. 10.1021/ja405351s10.1021/ja405351s ↗
27. 10.1016/S0022-0728(81)80091-510.1016/S0022-0728(81)80091-5 ↗
28. 10.1039/C5DT02161H10.1039/C5DT02161H ↗
29. 10.1016/j.electacta.2015.12.01810.1016/j.electacta.2015.12.018 ↗