T.  Palaniselvam, Valappil, M. Ozhukil, Illathvalappil, R., and Kurungot, S., ?Nanoporous graphene by quantum dots removal from graphene and its conversion to a potential oxygen reduction electrocatalyst via nitrogen doping?, Energy & Environmental Science, vol. 7, no. 7, pp. 1059-1067, 2014.

A. S.  Rewar, Chaudhari, H. D., Illathvalappil, R., Sreekumar, K., and Kharul, U. K., ?New approach of blending polymeric ionic liquid with polybenzimidazole (PBI) for enhancing physical and electrochemical properties?, Journal of Materials Chemistry A, vol. 2, no. 35, pp. 14449-14458, 2014.

S. K. M.  Unni, Bhange, S. N., Illathvalappil, R., Mutneja, N., Patil, K. R., and Kurungot, S., ?Nitrogen-induced surface area and conductivity modulation of carbon nanohorn and its function as an efficient metal-free oxygen reduction electrocatalyst for anion-exchange membrane fuel cells?, SMALL, vol. 11, no. 3, pp. 352-360, 2015.

R.  Illathvalappil, Dhavale, V. M., Bhange, S. N., and Kurungot, S., ?Nitrogen-doped graphene anchored with mixed growth patterns of CuPt alloy nanoparticles as a highly efficient and durable electrocatalyst for the oxygen reduction reaction in an alkaline medium?, Nanoscale, vol. 9, no. 26, pp. 9009-9017, 2017.