Shri. Sundararajan Ramakrishnan is a scientist specializing in proton exchange membrane (PEM) fuel cells and nanomaterials, with a strong focus on corrosion-resistant coatings, metallic bipolar plates, and long-term durability testing. He is currently pursuing a PhD in Materials Science and Engineering at the Indian Institute of Technology Kanpur through External mode. Before that, he holds an M.S. (by Research) in Metallurgical and Materials Engineering from IIT Madras, an M.Sc. in Materials Science and Technology from Puducherry Technological University, and a B.Sc. in Applied Sciences from PSG College of Technology.

Since 2021, Shri. S. Ramakrishnan has been serving as a Scientist at the Centre for Fuel Cell Technology (CFCT), ARCI, Chennai, where he leads durability testing on PEM fuel cell short stacks, low-temperature start-up studies, electrode fabrication, and the development of corrosion-resistant coatings and metallic bipolar plates using advanced forming techniques. He held progressive roles at CFCT, contributing to the development of metallic bipolar plates via hydroforming, stamping, and laser micromilling, as well as earlier experience at the National Chemical Laboratory, Pune, with proton exchange membranes.

His academic and industrial engagement also includes serving as Ad-Hoc Faculty in the Department of Metallurgical and Materials Engineering at NIT Tiruchirappalli, where he taught theory and laboratory courses and co-guided student projects in collaboration with national laboratories and allied departments. Shri. S. Ramakrishnan has co-authored book chapters on hydrogen fuel cells and high-temperature PEM membranes, published research articles in reputed journals such as Surfaces and Interfaces and Carbon, and is an inventor on an Indian patent (IN/558766, granted on 27 January 2025) for a durable, corrosion-resistant coating for fuel cell separators. His work has led to the development of coated metallic bipolar plates and extensive durability test data on PEM fuel cell stacks, positioning him as a key contributor to advancing hydrogen energy technologies.​