Work

Kinetics of Oxygen Evolution Reaction in Soluble Lead Flow Batteries

Year: 2024

Type: article

Abstract: Kinetics of oxygen evolution reaction (OER) on PbO2 deposited glassy carbon disk electrode in methanesulfonic acid (MSA) is analyzed with cyclic voltammetry and electrochemical impedance spectroscopy for soluble lead flow battery applications. The effect of concentration of the active species (Pb2+) and the electrolyte (MSA) on the OER at the deposited PbO2 layer is investigated. The apparent activation energy of the OER on PbO2, deposited at various overpotentials, is obtained from the Arrhenius and Eyring analyses. The apparent activation energy follows a unique trend that it increases with overpotential, reaches a maximum and decreases thereafter. This is consistent with the PbO2 specifically deposited from MSA of low concentrations (<1 M), where the gel layer composed of hydrated PbO(OH)2 is also found. It is observed that low MSA concentration is preferred for limiting the OER at the positive electrode.

Source: Journal of The Electrochemical Society

DOI: 10.1149/1945-7111/ad9a04

Authors: Miji E. Joy, Richard G. A. Wills, Manoj Neergat

Language: English

Topic: Advanced battery technologies research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: U.S. Department of Energy, Department of Science and Technology, Ministry of Science and Technology, India, Indian Institute of Technology Bombay

Award: G8860381862