High Capacity Next Generation K Ion Batteries Project at IIT Madras

Development of high capacity durable next generation K-ion batteries

Objective

• The project specifically aims to the practical demonstration of cost-effective KIBs includes: Design of high-capacity carbon-based anode and oxide-based cathode to achieve a reversible capacity > 200 mAhg?? at a high current rate of 30 mA g??, Modification of electrolyte with suitable additive to achieve high stability (>200 cycles), Optimization of cathode and anode mass loading for minimum fading and maximum performance, Achieving high capacity and stability of the half cells (2032-coin cells) using the developed cathode, anode and optimized electrolyte and scale up process.

Description

• Milestone 1: Design and optimization of synthesis parameters for high capacity carbon based anode and oxide based cathode for potassium ion batteries and initial characterizations; Optimization of cathode and anode mass loading for minimum fading and maximum performance; Integration and assembly of coin cells (2032) using optimized cathode and anode to achieve high specific capacity with stability (9 months), Milestone 2: Modification of electrolyte with suitable additive to extend the stability (>200 cycles) and the durability of the cell will be tested at different C-rates (9 months)

Impact

• There is a need for the development of alternative technology to lithium-ion battery that will pave a way for the large-scale energy storage technology. The project specifically aims to the practical demonstration of cost-effective KIBs.