Monometallic, bimetallic, and trimetallic chalcogenide-based electrodes for electrocatalytic hydrogen evolution reaction. (5th March 2023)

• Record Type: Journal Article
• Authors: Joshi, Kinjal K.; Pataniya, Pratik M.; Bhadu, Gopala; Sumesh, C.K.
• Is Part Of: International journal of hydrogen energy. Volume 48:Number 20(2023)
• Page Start: 7260
• Page End: 7272
• Publication Date: 2023-03-05
• Subjects: Cu2CoSnS4 -- Solid-phase synthesis -- Electrocatalytic reaction -- Hydrogen evolution reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.11.088
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Cu2 CoSnS4, Cu2 SnS3, Cu2 CoS4, Co2 SnS3, Cu2 S, CoS2, and SnS2 were synthesized using a one-step solvent-free solid-phase approach. The surface structure, morphology, and composition were characterized using an X-ray diffractometer (XRD), Fourier-Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), and X-ray Photoelectron Spectroscopy (XPS). The characterizations reveal pure phase formation and porous morphology. Further, the Hydrogen evolution reaction was performed using Cu2 CoSnS4, Cu2 SnS3, Cu2 CoS4, Co2 SnS3, Cu2 S, CoS2, and SnS2 -based electrodes. Amid all electrocatalysts, Cu2 CoSnS4 shows an excellent hydrogen evolution reaction with a low overpotential of −192.1 mV at −10 mA/cm 2 in 0.5 M H2 SO4 . And higher current density. Cu2 CoSnS4 also shows a lower Tafel slope of 98.6 mV/dec and charge transfer resistance than mono and bimetallic chalcogenide-based electrodes. The Cu2 CoSnS4 exhibit very good stability for ∼22 h at −10 mA/cm 2 current density in 0.5 M H2 SO4 . Highlights: Mono, bi, and tri metallic chalcogenides were synthesized by solvent-free solid-phase approach. Cu2 CoSnS4 shows overpotential of −192.1 mV vs RHE at −10 mA/cm 2 . Electrode displays good stability at −10 mA/cm 2 current density for ∼22 h. Volmer-Heyrovsky mechanism dominates in HER on Cu2 CoSnS4 -based electrode.