Ashok Kumar Das received his PhD from the Indian Institute of Technology Kharagpur, India. He published 29 research articles in various reputed scientific journals. After Completion of Ph.D. he worked as postdoctoral researcher in various institutes including, Chonbuk National University, Yeungnam University, Chungnam National University, South Korea; Indian Institute of Technology Kharagpur, India. He is currently working as an assistant professor in the Dept. of Chemistry, Madanapalle Institute of Technology & Science, India. His research interests are the synthesis and characterization of mixed metal oxides for various electrochemical applications including supercapacitor, electrocatalyst, electrochemical sensors etc.