A synergistic advancement of rGO-supported perovskite oxide composite for sustainable energy system
Year: 2025
Type: article
Abstract: The effectiveness of hydrogen energy production via water splitting through the electrocatalytic route dramatically relies on the efficiency, cost and stability of electrocatalysts . Herein, a novel reduced graphene oxide (rGO)-incorporated NiCrO 3 (rGO/NiCrO 3 ) composite as an electrode material was produced by a sonication technique for the oxygen evolution reaction (OER). The electrochemical OER behaviour was studied in 1.0 M KOH electrolyte after coating the target composite on the Nickel foam (NF). Various analytical tools were implemented to analyze the composite's structure, purity and surface area . The rGO/NiCrO 3 composite exhibits remarkable OER efficacy with a reduced overpotential of 254 mV, achieving a standard current density (j: 10 mA/cm 2 ) with a 35 mV/dec Tafel slope. Meanwhile, the reported composite shows a significant electrochemical surface area (ECSA) of 148 cm 2 and a lower impedance value (0.21 Ω). Moreover, the composite retains stability up to 50 h of the chronoamperometric testing. This work highlights the rapid electron flow because of the synergetic impact between rGO and NiCrO 3 and the enriched interfacial defects induced by rGO integration that improve oxygen adsorption and electrical properties at the active interface. Introducing a rGO nanosheet in the NiCrO 3 composite further enhances its electrocatalytic performance and increases diffusion at the electrode interface. Overall, this study presents a promising framework for efficient electrochemical energy generation.
Institutions: Prince Sattam Bin Abdulaziz University, Taif University
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $1,600
Awards: G1568662204, G8118486220
OpenAlex ID: W4410016771