A research team at the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru, has engineered a new sodium-ion battery (SIB) anode that delivers fast-charging performance and extended cycle life—addressing key limitations of current SIB technologies.
Advanced NASICON-Type Material at the Core
The innovation centers on a NASICON-type anode material, which the team optimized through a combination of nanoscale particle sizing, carbon coating, and aluminium doping. These enhancements significantly improve the material’s ionic conductivity and structural stability, making it suitable for high-performance energy storage applications.
Promising Electrochemical Results in the Lab
The lab-tested prototype demonstrated the ability to charge up to 80% in just six minutes and maintained performance over 3,000 charge-discharge cycles. Electrochemical testing was supported by quantum simulations, reinforcing the anode’s stability and fast-charge capability. Lead researchers Dr. Premkumar Senguttuvan and PhD scholar Biplab Patra noted that these findings directly tackle challenges such as sluggish charging and limited lifespan in conventional SIBs.
Second Anode Variant Shows High Energy Density
In a parallel study, the researchers introduced another NASICON-based anode material. In full-cell configurations, it achieved an energy density of 98 Wh/kg, retained 80% of its capacity after 1,000 cycles at a 5C rate, and recorded a specific capacity of 140 mAh/g at 1.4 V—all under lab conditions.
Focus Limited to Anode Development
The researchers focus solely on anode materials in both studies. They briefly mention cathode and electrolyte details but exclude safety data, cost analysis, manufacturing scalability, and supply chain implications. Nonetheless, they aim to offer an alternative to lithium-ion batteries by leveraging sodium—an element more abundant and accessible in India.
Aligning with Atmanirbhar Bharat Goals
Though still in the early research phase, the work is gaining attention as a potential enabler of India’s energy storage self-sufficiency. It aligns with the Atmanirbhar Bharat initiative, which emphasizes domestic innovation and reduced reliance on critical imports like lithium.
