Mesoporous cobalt–cobalt phosphide electrocatalyst for water splitting
| Autor: | A. Shokuhfar, M.H. Siadati, E. Loni |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Phosphide Materials Science (miscellaneous) Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Overpotential Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Fuel Technology Nuclear Energy and Engineering Chemical engineering chemistry Linear sweep voltammetry Water splitting 0210 nano-technology Mesoporous material Cobalt |
| Zdroj: | Materials Today Energy. 16:100398 |
| ISSN: | 2468-6069 |
| DOI: | 10.1016/j.mtener.2020.100398 |
| Popis: | As a sustainable hydrogen/oxygen production method for the near future, water splitting is still dependent on the appropriate catalysts for acceptable efficiency. Here, for the first time, using silica template, a mesoporous cobalt-cobalt phosphide (Meso-Co/Co2P) electrocatalyst was produced. For investigating its structure, composition, and morphology, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) analyses were accomplished. Chronoamperometry, cyclic and linear sweep voltammetry studies exhibited excellent electrocatalytic activity. It needed only an overpotential of 57 mV to produce a 10 mA cm−2 of anodic current density. A water electrolyzer with Meso-Co/Co2P as both anode and cathode in an alkaline medium generated a current density of 10 mA cm−2 at the potential of 1.57 V. |
| Databáze: | OpenAIRE |
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