Energy Storage & Conversion Laboratory


New Chemistry Unit



Our group’s research focuses on different areas of electrochemical energy devices including batteries and supercapacitors for portable electronics, grid energy storage and electric vehicles. The major research thrusts include: Synthesis of novel electrode materials; Understanding their redox mechanism; Optimizing the performance of materials; Developing high power/high energy density devices

Research topics


Sodium-ion Batteries (SIBs): The growing concern over the cost and limited resources of lithium precursor forced researchers to seek alternative battery technologies. SIBs have been proposed as potential candidate for grid energy storage due to inexpensive and abundant sodium precursors. The working principle of SIBs is similar to lithium ion batteries, in which sodium ions get released from negative electrode during discharge, move towards positive electrode through electrolyte where it recombines with just arrived electrons that have come through external circuit. On charge, this entire process is reversed. Our group focuses on the development of new positive and negative electrode materials, study their electrochemical properties and optimize their electrochemical performance.

Multivalent ion Batteries: Unlike the monovalent alkali-ion intercalation, the multivalent cathodes have been designed to reversibly intercalate multivalent cations which involve more than one electron transfer, thereby increasing the storage capacity. However, the strong electrostatic interaction between guest ions and host lattice results slow solid-state diffusion and to alleviate this effect, sulfide hosts are preferred. In our group we have embarked to design and synthesize novel cathode materials for multivalent batteries.


Our Team

Dr. Premkumar Senguttuvan

Principal Investigator

Subham Ghosh

PhD student

Aditi Chiring

Integrated Ph.D. student

If you are interested in joining our group, please contact Dr. Premkumar Senguttuvan


Relevant publications


  1. A High Power Rechargeable Non-aqueous Multivalent Zn/V2O5 Battery P. Senguttuvan, S. –D. Han, S. Kim, A. L. Lipson, S. Tepavcevic, I. D. Bloom, A. K. Burrell, T. T. Fister, C. S. Johnson Adv. Energy Mater. 6 (2016) 1600826

  2. Rationalization of Intercalation Potential and Redox Mechanism for A2Ti3O7 (A=Li, Na), G. Rousse, P. Senguttuvan, M.E. Arroyo y de Dompablo, J.-M. Tarascon, M. R. Palacín, Chem. Mater.25 (2013) 4946.

  3. Titanium (III) sulfate as new negative electrode for sodium-ion batteries P. Senguttuvan, G. Rousse, H. Vezin, J.-M. Tarascon, M. R. Palacín Chem. Mater.25 (2013) 2391

  4. Low potential sodium insertion in NASICON-type structure through the Ti(III)/Ti(II) redox couple, P. Senguttuvan, G. Rousse, M.E. Arroyo y de Dompablo, H. Vezin, J.-M. Tarascon, M. R. Palacín, J. Am. Chem. Soc. 135 (2013) 3897

  5. Na2Ti3O7: Lowest Voltage Ever Reported Oxide Insertion Electrode for Sodium Ion Batteries, P. Senguttuvan, G. Rousse, V. Seznec, J. –M. Tarascon, M. R. Palacín, Chem. Mater.23 (2011) 4109