Constructing heterostructured CoSe2/Ni3Se4@N-doped carbon nanosheets/ketjen black carbon as a robust oxygen evolution electrocatalyst
| Autor: | Haixia Tong, Long Xuanda, Hong Chen, Guiyu Liu, Dong Qian, Jinlong Liu, Zhang Zhiliang, Junhua Li, Zeng Liu |
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| Rok vydání: | 2020 |
| Předmět: |
Tafel equation
Materials science Renewable Energy Sustainability and the Environment Oxygen evolution Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Carbon black Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences Hydrothermal circulation 0104 chemical sciences Fuel Technology Chemical engineering chemistry 0210 nano-technology Carbon Pyrolysis |
| Zdroj: | International Journal of Hydrogen Energy. 45:30666-30672 |
| ISSN: | 0360-3199 |
| Popis: | We design and construct a novel heterostructured CoSe2/Ni3Se4@N-doped carbon nanosheets/Ketjen black carbon (denoted as CoSe2/Ni3Se4@NC/KB) via the combination of pyrolysis and hydrothermal method. As a result of the exceptional synergism between CoSe2 and Ni3Se4 as well as high conductivity of carbon materials, the obtained CoSe2/Ni3Se4@NC/KB drives an OER current density of 10 mA cm−2 by an overpotential of 260 mV and displays a low Tafel slope of 68 mV dec−1, outmanoeuvring commercial RuO2 and IrO2, control groups (i.e. Ni3Se4@NC/KB, CoSe2@NC/KB, and CoSe2/Ni3Se4@NC), as well as most hybrids of selenides and carbon materials reported recently. |
| Databáze: | OpenAIRE |
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