Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution
| Autor: | Yunwei Wang, Chang Liu, Gailing Bai, Xiang-Yun Guo, Nianjun Yang, Baoying Lv, Xili Tong |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Tafel equation
Materials science Nanowire Oxygen evolution chemistry.chemical_element 02 engineering and technology Nitride Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences 0104 chemical sciences lcsh:Chemistry chemistry Chemical engineering lcsh:Industrial electrochemistry lcsh:QD1-999 Electrochemistry 0210 nano-technology Mesoporous material Cobalt lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 98, Iss, Pp 87-91 (2019) |
| ISSN: | 1388-2481 |
| Popis: | Efficient electrocatalysts for oxygen evolution are vitally important for regenerative fuel cells and metal-air batteries. Herein, 3D mesoporous and ultrathin array of CoN nanosheets are synthesized on the Ni foam via thermal transformation of Co3O4 nanowire arrays. This array imparts enhanced active sites, mass diffusion, and electron transfer towards oxygen evolution reaction. The low overpotential of 323 mV at 30 mA cm−2, a Tafel slope of 74 mV dec−1, and a high potential conservation in a long process of electrolysis process are achieved. It is thus one robust and efficient electrocatalyst for OER. Keywords: CoN nanosheet, Oxygen evolution reaction, Electrocatalyst |
| Databáze: | OpenAIRE |
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