Analytical and Bioanalytical Electrochemistry is an international scientific journal published online by the Center of Excellence in Electrochemistry at the University of Tehran, Tehran, Iran. The journal was published quarterly from 2009 to 2011, bimonthly from 2011 to 2018, and has been published in at least eight issues per year since 2018. Analytical and Bioanalytical Electrochemistry - 15 12 2023 12 31 Combination of G-C3N4 and Triplex Metal Oxides for Enhanced Performance of Oxygen Reduction Reaction 1098 1115 709690 10.22034/abec.2023.709690 EN Seyed Sina Hosseini Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran Hydrogen and Fuel Cell Laboratory, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran 0000-0001-5143-7155 Mehdi Mehrpooya Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran Hydrogen and Fuel Cell Laboratory, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran Mohammad Hossein Jahangir Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran Journal Article 2023 11 25 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 and storage systems. The development of efficient and affordable non-precious electrocatalysts for the oxygen reduction reaction (ORR) is crucial for the advancement of fuel cells and metal-air batteries. In this study, we synthesized a novel hybrid electrocatalyst for ORR consisting of Layered Double Hydroxide (LDH)-derived 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 0.1, 0.2, 0.5, and 1). The physiochemical analyses confirmed the incorporation of the as-synthesized MMO 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. https://www.abechem.com/article_709690_98e197d46df4eac023f82dc3ef8ae8ec.pdf