The world is striving for clean and efficient forms of energy due to various factors like – increase in global energy demand, limited fossil-fuel resources and global warming. The commercialization has evolved through portable batteries for laptops, mobile phones, working tools to hybrid electric vehicles, plug-in hybrids and complete electric vehicles. Li-ion batteries has to be the energy storage technology when it comes to mobile applications.
Scarcity of lithium resource and the increased demand for it is initiating research in alternate battery technologies. Na-ion batteries are gaining research momentum due to their much better abundance in the Earth’s crust in comparison to lithium.
Regardless of the application, the discovery and optimization of high performance materials are critical to future breakthroughs for next-generation rechargeable batteries. For this, new classes of compounds should be explored and electrochemically characterized for gaining a better understanding of functional materials for battery research. This would be the focus of my research group in the coming future.
Greener, Safer, and Sustainable Batteries: An Insight into Aqueous Electrolytes for Sodium-Ion Batteries by Pahari D., Puravankara S. ACS Sustainable Chemistry & Engineering 8 10613-10625 (2020)
On controlling the P2-O2 phase transition by optimal Ti-substitution on Ni-site in P2-type Na0.67Ni0.33Mn0.67O2 (NNMO) cathode for Na-ion batteries by Puravankara S., Pahari D. Journal of Power Sources 455 227957-227964 (2020)
Large-scale surfactant-free synthesis of WS2 nanosheets: an investigation into the detailed reaction chemistry of colloidal precipitation and their application as an anode material for lithium-ion and sodium-ion batteries by Sharma P., Kumar A. , Bankuru S. , Chakraborty J. , Puravankara S. New J. Chem. 44 1594-1608 (2020)
Asymmetric reaction pathway of Na+-ion during fast cycling in - and -Fe2O3 thin film anode for sodium-ion battery by Puravankara S., Ghosh S. , Adyam V. , Nayak D. Ionics 1-12 (2019)
Nanostructured ZrO2 /MWCNT Hybrid Materials: Fabrication, Characterization and Applications in Shielding of Electromagnetic Pollution by Puravankara S. Journal of nanoscience and nanotechnology 19 3367-3375 (2019)
4. Insight into the Li ion dynamics in Li12Si7: Combining field gradient NMR, 1D/2D MAS NMR and relaxometry by A. Kuhn, S. Dupke, M. Kunze, K. Volgmann, P. Sreeraj, T. Langer, R. Poettgen, M. Winter, H.-D. Wiemhöfer, H. Eckert, P. Heitjans J. Phys. Chem. C 118 28350-28360 (2014)
Anodic Decomposition of Trimethylboroxine as Additive for High voltage Li-ion batteries, , J. Electrochem. Soc., 161(14), A2255-A2261 (2014) by A. Freiberg, M. Metzger, D. Haering, S. Bretzke, P. Sreeraj, T. Nilges, C. Stinner, C. Marino, H. A. Gasteiger J. Electrochem. Soc., 161(14) A2255-A2261 (2014)
6. Li ion diffusion in the anode material Li12Si7: Ultrafast Quasi-1D diffusion and two distinct fast 3D jump processes separately revealed by 7Li NMR relaxometry by A. Kuhn, P. Sreeraj, R. Pöttgen, H.-D. Wiemhöfer, M. Wilkening, P. Heitjans J. Am. Chem. Soc 133 11018-11021 (2011)
8. Li-NMR Spectroscopy on Crystalline Li12Si7: Experimental Evidence for the Aromaticity of the Planar Cyclopentadienyl-Analogous Si56-Rings by A. Kuhn, P. Sreeraj, R. Pöttgen, H.-D. Wiemhöfer, M. Wilkening, P. Heitjans Angew. Chem .Intl. Ed 50 12099-12102 (2011)
15. Structure and bonding of Li1.42(5)Pd2Sn5.58(5): A Lithium Intercalated Palladium Stannide by P. Sreeraj, Zh. Wu, R.D. Hoffmann, U. Häussermann, R. Pöttgen Chem. Mater 17 (4) 911-915 (2005)
Hierarchically Nanostructured Energy Materials for Next Generation Na-Ion Based Energy Storage Technologies & Their Use in Renewable Energy Systems Department of Science and Technology(DST)
Hybrid Sodium - ion Cell/Super Capacitor Packs for Light Electric Vehicles Ministry of Road Transport and Highways Transport Bhawan
Opened & Intelligent Plug-in Hybrid Electric Vehicle (PHEV) Technologies for Smart Indian Cities (UAY_I_IITKGP_019) Ministry of Heavy Industries and Public Enterprises, GoI
Area of Research: Energy storage
Area of Research: Diagnostics and Prognostics of Battery Systems
Area of Research: Nanomaterials and supercapacitors
Area of Research: Electrochemical energy storage
Area of Research: Na-ion battery electrodes
Area of Research: Hybrid systems
Area of Research: Alkali Metal batteries
Area of Research: Nanomaterials in energy storage.
Area of Research: Computational and experimental study on energy materials
Area of Research: Electrochemical Energy Storage