| Autor: |
Wang, Jianzhi, Luo, Yu, Wang, Jiwei, Yu, Hongliang, Guo, Ziyi, Yang, Jie, Xue, Yanan, Cai, Ning, Li, Hui, Yu, Faquan |
| Zdroj: |
Physical Chemistry Chemical Physics (PCCP); 10/14/2023, Vol. 25 Issue 38, p26298-26307, 10p |
| Abstrakt: |
The preparation of an electrocatalyst for the oxygen evolution reaction (OER) with high catalytic activity, good long-term durability and rapid reaction kinetics through interface engineering is of great significance. Herein, we have developed a bimetallic sulfide particle cluster-supported three-dimensional graphene aerogel (FeNiS@GA), which serves as an efficient electrocatalyst for OER, by a one-step hydrothermal method. Profiting from the synergy of the FeNiS particle cluster with high capacitance and GA with its three-dimensional porous nanostructure, FeNiS@GA shows a high specific surface area, large pore volume, low contact resistance, and decreases the electron and ion transport routes. FeNiS@GA exhibits outstanding OER activity (when the current density is 50 mA cm−2, the overpotential is 341 mV), low Tafel slope (63.87 mV dec−1) and remarkable stability in alkaline solutions, outperforming FeNiS, NiS@GA, FeS@GA and RuO2. Due to its simple synthesis process and excellent electrocatalytic performance, FeNiS@GA shows great potential to replace noble metal-based catalysts in practical applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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