One-step facile hydrothermal synthesis of rGO-CoS2 nanocomposites for high performance HER electrocatalysts |
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| Affiliation: | 1. Department of Semiconductor Science, Dongguk University-Seoul, 04620, Republic of Korea;2. Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, 04620, Republic of Korea;3. Division of Physics, School of Advanced Sciences, Vellore Institute of Technology (VIT) Chennai, Vandalur - Kelambakkam Road, Chennai - 600 127, India;4. Department of Chemistry, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai-603 203, India |
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| Abstract: | With increasing demand for green and clean energy, the research community moves toward electrocatalytic hydrogen production. Herein, we synthesized the reduced graphene oxide decorated-cobalt disulfide (rGO-CoS2) nanocomposites via the one-step facile hydrothermal method and investigated their excellent hydrogen evolution reaction (HER) activities. The rGO-CoS2 nanocomposites showed an aggregated structure of spherical CoS2 nanoparticles interconnected along with GO nanosheets. The rGO-CoS2 nanocomposites exhibited a low overpotential of 377 mV and a small Tafel slope of 121 mV/dec. This work delivers a prospective scheme for developing the high efficient rGO-CoS2 electrocatalysts for future green energy technology in hydrogen production. |
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| Keywords: | Cobalt disulfide 2D nanostructures rGO Electrocatalyst Hydrogen evolution reaction |
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