Pd Nanoparticle-Interspersed Hierarchical Copper Hydroxide@Nickel Cobalt Hydroxide Carbonate Tubular Arrays as Efficient Electrocatalysts for Oxygen Evolution Reaction
| Autor: | Kang Jiahui, Rong Sun, Sheng Jiali, Xie Jinqi, Jiahui Chen, Ching-Ping Wong, Xian-Zhu Fu |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Cobalt hydroxide Renewable Energy Sustainability and the Environment General Chemical Engineering Oxygen evolution chemistry.chemical_element 02 engineering and technology General Chemistry Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Electrochemistry 01 natural sciences Copper 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Environmental Chemistry Water splitting Hydroxide 0210 nano-technology |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 7:16459-16466 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.9b03653 |
| Popis: | To meet the ever-growing clean energy technology, developing effective catalysts for the oxygen evolution reaction (OER) is imperative for boosting the efficiency of electrochemical water splitting. This work reports Pd nanoparticle-interspersed nickel cobalt hydroxide carbonate nanothorn-coated copper hydroxide nanotube arrays grown on a copper foam (CH@NCHC NT-Pd/CF) as highly efficient OER electrocatalytic electrodes. The nanothorns and open-structured nanotubes have large surface areas and plenty of active sites. Particularly, the interfacial interaction between Pd nanoparticles and NCHC nanothorns causes charge transfer and redistribution, which are highly beneficial to promoting OER. The unique 3D integrated construction also can accelerate the electron and mass transfer and improve structural stability. Owing to the above merits, CH@NCHC NT-Pd/CF shows excellent OER electrocatalytic activity and stability in alkaline solution, delivering a current density of 100 mA cm–2 at a low overpotential of 20... |
| Databáze: | OpenAIRE |
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