Highly active nickel-cobalt/nanocarbon thin films as efficient water splitting electrodes

Bayatsarmadi, Bita, Zheng, Yao, Russo, Valeria, Ge, Lei, Casari, Carlo Spartaco and Qiao, Shi-Zhang (2016) Highly active nickel-cobalt/nanocarbon thin films as efficient water splitting electrodes. Nanoscale, 8 43: 18507-18515. doi:10.1039/c6nr06961d


Author Bayatsarmadi, Bita
Zheng, Yao
Russo, Valeria
Ge, Lei
Casari, Carlo Spartaco
Qiao, Shi-Zhang
Title Highly active nickel-cobalt/nanocarbon thin films as efficient water splitting electrodes
Journal name Nanoscale   Check publisher's open access policy
ISSN 2040-3372
2040-3364
Publication date 2016-11-21
Year available 2016
Sub-type Article (original research)
DOI 10.1039/c6nr06961d
Open Access Status Not yet assessed
Volume 8
Issue 43
Start page 18507
End page 18515
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
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.
Formatted 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.
Keyword Chemistry, Multidisciplinary
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DP130104459
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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