Battery / Secondary Battery

Next Generation Energy Storage Systems
Electrochemical energy storage and conversion are involved in everyday life through the application in portable electronics, electric vehicles, and energy storage grids in the form of batteries, supercapacitors, fuel cells, and so on. At EEL, the research group is trying to fill the gap between the fundamental aspects of energy storage and real-time usage in daily life for futuristic applications. The energy storage devices need keen development in the science and interfacial factors of the storage devices for effective utilization. The key areas of energy storage devices designed and developed at EEL are as follows. eover, using various computing logic, we are demonstrating the FeFET-PIM array with a high energy efficiency, which is evaluated by the system-level simulation.

• Lithium-ion Batteries
• Lithium-Sulfur Batteries
• All Solid-State Batteries
• Supercapacitors & Other Advanced Energy Storage Systems(K-ion Batteries, etc.)

• Lithium-ion Batteries
  The Li-containing cathodes are the key performers along with the host anodes and electrolytes towards the enhancement of performance in lithium ion batteries (LIBs). Emerging 2D materials like MXene (M_n+1X_nT_x (n = 1-4)) have been majorly employed for the design and development of new generation electrodes (cathodes and anodes) and electrolytes for increasing the performance of LIBs.
  Here in EEL, we focus on the development of electrodes (cathodes and anodes), electrolytes, and separators for addressing future needs in energy storage. In this regard, EEL is dev eloping the composites cathodes of commercially available NCM, LiFePO₄, LiCoO₂, etc., and next generation anodes (silicon, hallow silicon, silica, hallow silica, etc.) with thein clusion of 2D MXenes and functionalized MXenes (f-MXenes) as a conductive additive and current collector to improve the ionic and electronic mobility in the devices. Apart from MXenes-based materials, other 2Dnanomaterials, carbon-based nanomaterials, surface-modification of polymeric separators (such as PE, PP, PAN, etc), solid polymer/ceramic electrolytes, and polymeric gel electrolytes are designed and studied.
• All-Solid-State Batteries
  All solid-state batteries (ASSBs) have the potential to significantly improve the energy density/range of electric vehicle batteries. For the development of the next-generation ASSBs’ technologies, the EEL group is thrusting on the design and characterization of the materials and evaluating the structural, interfacial, and electrochemical properties towards the high compatibility of interfaces in ASSBs. Especially the design and development of the MXenes and functionalized MXenes (f-MXenes) for tuning the interface compatibility between electrodes and electrolytes in ASSBs is pivotal to enable easy ionic and electronic mobility for giving high performance in interdisciplinary applications.
• Lithium-Sulfur Batteries
  Lithium-sulfur batteries (LSBs) are one of the emerging alternatives with high energy density than LIBs. Sulfur-based cathodes are the key factors in deciding the performance of LSBs. MXenes are used as one of the polysulfides (PS) capturing materials during the process of charge-discharge in LSBs. The design and development of the MXenes and functionalized MXenes (f-MXenes) to enhance the performance of Li-S batteries is done at EEL by employing MXenes/f-MXenes along with electrodes, on the separator, and/or composites with electrochemical catalysts studied.
• Supercapacitors & Other Advanced Energy Storage Systems (K-ion Batteries, etc.)
  Here in EEL, the development of symmetric, asymmetric, and hybrid supercapacitors using 2D and 3D electrodes made of materials like MXenes, metal oxides, metal sulfides, and carbon nanomaterials using aqueous and non-aqueous electrolytes, and polymeric-gel electrolytes.
  Apart from the conventional energy storage devices, electrode materials for futuristic energy storage devices like K-ion batteries are also designed and developed at EEL.