Combination of G-C3N4 and Triplex Metal Oxides for Enhanced Performance of Oxygen Reduction Reaction

Given the rising concerns regarding climate change, there has been a noticeable rise in research dedicated to exploring materials aimed at bolstering the efficiency of energy conversion technologies, like fuel cells. The development of efficient and affordable non precious electrocatalysts for the oxygen reduction reaction (ORR) is vital for the advancement of fuel cells. In this study, we synthesized a new hybrid catalyst for ORR consisting of triple Metal Oxide (IIIMO) decorated on a porous graphitic carbon nitride (PCN); as well, its physiochemical and electrochemical performance was assessed. This composite facilitates a synergistic enhancement of catalytic activity for the ORR, benefiting from its binary composition and hierarchically porous structure. The synthesis of the PCN-IIIMOx% composite employed a straightforward layer-by-layer assembly method, integrating several weight ratios of IIIMO (where x represents 10, 20, 50, and 100%). The physiochemical analyses confirmed the incorporation of the as-synthesized IIIMO on the PCN lattice. The electrochemical analyses showed that the PCN-IIIMO20% has the best performance holding the onset potential of-0.09 V, electron transfer number of 3.3, and current retention durability of 79% after 7200s of continuous operation.