Work

Electrodeposition of Ni–MoS2 as effective hydrogen evolution reaction catalysts in alkaline media

Year: 2024

Type: article

Abstract: Highly active, long-lasting, and economically feasible nonprecious metal-based electrocatalysts are urgently required for the slow hydrogen evolution reaction (HER) in alkaline conditions. Direct current (DC) electrodeposition was used to develop the highly active Ni–MoS 2 composite coatings for efficient hydrogen generation. Scanning electron microscopy (SEM), Energy Dispersive X Ray Spectroscopy (EDS), X-ray diffraction (XRD), and linear sweep voltammetry (LSV) were used to evaluate the coatings. Ni–MoS 2 composite coatings behaved almost identically to pure platinum metal. The Ni–MoS 2 coating produced 1.0 g/l demonstrated a low overpotential for HER. The HER process's analyzed from Volmer-Tafel mechanistic route has an extremely low slope of 56.5 mV/dec. All the coated samples were subjected to chronopotentiometry (CP). This catalyst's high HER performance shows that it has significant potential for practical applications.

Source: Hybrid Advances

DOI: 10.1016/j.hybadv.2024.100296

Authors: Purshotham P. Katti, B.M. Praveen, Bharath K. Devendra, S Varadaraj, J.R. Naveen Kumar

Institution: Srinivas University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,500