1. School for Advanced Research in Petrochemicals, Laboratory for Advanced Research in Polymeric Materials, Central Institute of Petrochemicals Engineering & Technology, Bhubaneswar-751024, India
2. Electrochemical Energy Storage Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Tamil Nadu 603203, India
3. Department of Physics, University of Konstanz, Universitätsstr. 10, P.O. Box 680, 78457 Konstanz, Germany