Metals are susceptible to corrosion, but protective coatings help prevent deterioration. Recently, a market analysis by Grand View Research highlighted the expanding market for corrosion inhibitors, emphasizing the importance of efficient protection methods. Traditional techniques like linear sweep voltammetry have limitations in evaluating the degradation of coated metals due to the blockage of ions by organic coatings. To address this issue, researchers at IIT Bombay introduced a novel method combining hydrogen permeation-based potentiometry (HPP) with electrochemical impedance spectroscopy (EIS) to quantify degradation rates at metal-organic coating interfaces. The innovative approach allowed for direct measurement of hydrogen permeation and analysis of how it affects the metal surface. By successfully applying this technique to study oxygen reduction reaction on iron coated with poly-methyl methacrylate, the researchers demonstrated its potential in monitoring corrosion rates and enhancing industrial applications. Prof Vijayshankar emphasized the method's relevance not only in the steel industry but also in fuel cell and sensor fields, showcasing its versatility and cost-effectiveness.