Research

Our group’s research focuses on different areas of electrochemical energy devices including batteries and supercapacitors. We apply tools of solid-state and inorganic chemistry to design materials for energy storage and conversion.

Na-ion Batteries

Sodium-ion batteries (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 Na-ion electrode & electrolyte materials, study their electrochemical properties and optimize their electrochemical performance.

Multivalent Batteries

Unlike monovalent alkali-ion intercalation, multivalent-ion 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.

Topochemical Bottom-up Synthesis

Exploratory Solid-State Synthesis

Solid-state synthesis plays an important role to develop materials for many applications including rechargeable batteries, supercondutors, thermo- and ferro-electrics, etc.. Our group explores novel synthesis routes such as soft chemistry to develop new materials which cannot be synthesized by traditional ceramic process.

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