Ultrafast construction of interfacial sites by wet chemical etching to enhance electrocatalytic oxygen evolution
| Autor: | Xinyi Tan, Zhibin Liu, Shaofeng Li, Hongling Huang, Jieshan Qiu, Xiaotong Han, Yingying Niu, Wei Guo, Chang Yu, Huawei Huang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Oxygen evolution 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences Isotropic etching 0104 chemical sciences Ion Catalysis Hydrolysis Chemical engineering Etching (microfabrication) General Materials Science Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Nano Energy. 69:104367 |
| ISSN: | 2211-2855 |
| Popis: | Interface engineering has been recognized as a highly effective strategy for regulating the surface properties and improving the catalytic activities of materials, while the traditional interface construction methods are energy consumption and time-consuming. Herein, an ultrafast (30 s) interfacial reaction strategy is developed to construct the NiCo-LDH@FeOOH hetero-interface structure integrated on carbon fiber paper (NiCo-LDH@FeOOH/CFP) by a wet chemical etching method, which is involved in the Fe3+-triggered H+ ions formation and etching as well as the Fe3+ ions hydrolysis. The as-made NiCo-LDH@FeOOH/CFP features enriched interfacial active sites and finely modulated electron structure, thus realizing the remarkable electrocatalytic activity and durability for water oxidation with an ultralow overpotential of only 224 mV to deliver 10 mA cm−2. Furthermore, this ultrafast interfacial reaction strategy can be expanded to construct other Ni-containing hydroxide@FeOOH hetero-interface structure, which will shed a new light on the further construction of bi/multi component hetero-structure materials in electrocatalysis and energy-related fields. |
| Databáze: | OpenAIRE |
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