Bayatsarmadi, Bita and Zheng, Yao and Russo, Valeria and Ge, Lei and Casari, Carlo Spartaco and Qiao, Shi-Zhang (2016) Highly active nickel-cobalt/nanocarbon thin films as efficient water splitting electrodes. Nanoscale, 8 (43). ISSN 2040-3364
Abstract
Developing low cost, highly active and stable electrocatalysts for both the hydrogen evolution reaction
(HER) and the oxygen evolution reaction (OER) using the same electrolyte has remained a major challenge. Herein, we report a novel and robust material comprised of nickel–cobalt nanoparticles coated on a porous nitrogen-doped carbon (NC) thin film synthesized via a two-step pulsed laser deposition technique. The optimized sample (Ni0.5Co0.5/NC) achieved the lowest overpotentials of 176 mV and 300 mV at a current density of 10 mA cm−2 for HER and OER, respectively. The optimized OER activity might be
attributed to the available metal oxide nanoparticles with an effective electronic structure configuration and enhanced mass/charge transport capability. At the same time, the porous nitrogen doped carbon incorporated with cobalt and nickel species can serve as an excellent HER catalyst. As a result, the newly developed electrocatalysts manifest high current densities and strong electrochemical stability in overall water splitting, outperforming most of the previously reported non-precious metal-based catalysts.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Permanent restricted access to Published version due to publisher copyright policy. |
| Faculty / Department / School: | No Faculty |
| Date Deposited: | 19 Apr 2017 07:00 |
| Last Modified: | 28 Apr 2017 04:01 |
| Uncontrolled Keywords: | catalysts; cobalt; deposition; doping (additives); electrocatalysts; metal nanoparticles; nanoparticles; nitrogen; pulsed laser deposition; synthesis (chemical); thin films |
| Fields of Research : | 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials |
| Socio-Economic Objective: | E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences |
| Identification Number or DOI: | 10.1039/c6nr06961d |
| URI: | http://eprints.usq.edu.au/id/eprint/31128 |
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