Crystalline and porous CoSe dendrimeric architectures for efficient oxygen evolution reaction

نویسندگان

چکیده

Developing an efficient and economical electrocatalyst for oxygen evolution reaction is the key challenge to renewable energy technologies. Metal selenides are attractive candidates electrocatalytic water oxidation because they provide suitable surface-active sites reaction. Herein, we report less explored hexagonal cobalt selenide (CoSe) preparation through facile environmentally benign one-step hydrothermal method. Reaction conditions were precisely tailored develop highly crystalline porous dendrimeric architectures of CoSe. Owing its exclusive network large electrochemical surface area, superior CoSe (that 16H) showed excellent activity with remarkably low overpotential (250 mV at 10 mA cm−2) very high current density (570 in a small potential window. The Tafel slope 16H sample was 56 dec−1, indicating faster kinetics catalyst surfaces. Moreover, it also stability under harsh oxidative 24-hour long test experiment.

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ژورنال

عنوان ژورنال: Fuel

سال: 2022

ISSN: ['0016-2361', '1873-7153']

DOI: https://doi.org/10.1016/j.fuel.2022.124324