CoS2/RGO hybrid composites as catalysts for efficient counter electrodes in Pt-free dye-sensitized solar cell applications

Manikandan, V. S.; George, Kesiya; Govindraj, T.; Thirumurugan, Arun; Prabakaran, K.; Mangalaraja, R. V.; Navaneethan, M.

Abstract

Dye-sensitized solar cells (DSSCs) have gained recognition as a promising indoor photovoltaic technology, drawing considerable attention for their ability to convert light into electricity. In this study, we present a straightforward one-step hydrothermal synthesis method for producing cobalt sulfide nanoparticles decorated with reduced graphene oxide (CoS2/RGO) nanocomposites, serving as an efficient counter electrode (CE) material for DSSCs. The CoS2/RGO nanocomposites exhibited a chain-like structure formed by RGO nanosheet-decorated spherical particles interconnected with CoS2. Demonstrating excellent electrocatalytic activity with a low Epp (peak-to-peak separation) value, the CoS2/RGO nanocomposites outperformed pristine CoS2 nanoparticles. Moreover, the power conversion efficiency of the CoS2/RGO hybrid structure-based CE surpassed that of the pristine CoS2 nanoparticles. These findings suggest that the facile synthesis of CoS2/RGO nanocomposites holds great promise as an electrode material for effective CEs in DSSC applications.

Más información

Título según WOS: ID WOS:001206288500006 Not found in local WOS DB
Título de la Revista: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volumen: 35
Número: 12
Editorial: Springer
Fecha de publicación: 2024
DOI:

10.1007/s10854-024-12583-8

Notas: ISI