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https://hdl.handle.net/2440/103940
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Type: | Journal article |
Title: | Highly active nickel-cobalt/nanocarbon thin films as efficient water splitting electrodes |
Author: | Bayatsarmadi, B. Zheng, Y. Russo, V. Ge, L. Casari, C. Qiao, S. |
Citation: | Nanoscale, 2016; 8(43):18507-18515 |
Publisher: | The Royal Society of Chemistry |
Issue Date: | 2016 |
ISSN: | 2040-3364 2040-3372 |
Statement of Responsibility: | Bita Bayatsarmadi, Yao Zheng, Valeria Russo, Lei Ge, Carlo Spartaco Casari and Shi-Zhang Qiao |
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. |
Rights: | This journal is © The Royal Society of Chemistry 2016 |
DOI: | 10.1039/c6nr06961d |
Published version: | http://dx.doi.org/10.1039/c6nr06961d |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
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