Dr. Paulraj Arunkumar is a Research Professor and NRF fellow in the School of Chemical Engineering at Chonnam National University, where his work focuses on advanced multifunctional materials for clean energy technologies, including electrocatalysis, energy storage, and optoelectronics. Over more than 15 years of research experience, he has developed MOF-derived phosphide and chalcogenide electrocatalysts, engineered metal–anion coordinated systems for efficient HER/OER, and designed high-capacity lithium-rich layered and spinel cathodes for next-generation rechargeable batteries, emphasizing structural stability and cyclability. His earlier and ongoing work also spans zero-thermal-quenching inorganic phosphors, stable halide perovskites for high-efficiency lighting, and MOF-based multifunctional materials for sensing and supercapacitors, supported by extensive expertise in electroanalytical methods (CV, EIS, LSV) and materials characterization (SEM, TEM, XRD, XPS). He has authored over 50 peer-reviewed publications, including papers in high-impact journals such as Nature Materials, Nature Communications, Advanced Functional Materials, and Applied Catalysis B: Environmental, and has secured competitive funding such as an NRF Korea grant as principal investigator to advance electrocatalyst and water-splitting research.