By: ICN Bureau
Last updated : November 04, 2026 3:19 pm
EpSil combines 600–650 mAh/g anode capacity with faster-charging capability and compatibility with existing cell production lines
Epsilon Advanced Materials has launched "Epsil," a new silicon–graphite composite anode material designed to significantly boost battery energy density.
By integrating this material, manufacturers can either extend electric vehicle driving range by up to 30% using the same battery pack size, or shrink the pack size entirely while keeping the vehicle's current range intact. The final performance gains will vary based on specific cell chemistry, silicon loading, electrode and pack design, and overall vehicle efficiency.
Epsil has a reversible capacity of 600–650 mAh/g, compared to 340–360 mAh/g for conventional graphite anodes. This silicon blended graphite material gives cell makers a higher cell level energy density while addressing the cycle-life challenges that comes with silicon’s expansion during charging and contraction during discharging.
Accelerating charge times is another key objective. Epsil is engineered to support 1C–5C charge rates while managing anode expansion and ensuring uniform silicon dispersion. Additionally, Epsilon designed the composite to minimize lithium plating and the subsequent risk of dendrite formation during high-rate charging. Because lithium plating degrades batteries and introduces short-circuit risks during rapid charging, Epsil’s actual performance will vary based on individual customer cell designs, temperatures, charging protocols, and validation testing.
Vikram Handa, Managing Director of Epsilon Advanced Materials said “Battery manufacturers are being asked to deliver more range and faster charging without making battery packs larger. With Epsil, we are delivering higher anode capacity, stable fast charging and compatibility with existing manufacturing lines. Our aim is to give customers more flexibility in how they design for vehicle range and pack size, through a resilient & secure anode material supply option from India.”
The launch comes as demand for EV batteries grows. More than 20 million electric cars were sold globally in 2025, according to the International Energy Agency (IEA). EV battery deployment reached 1.2 TWh that year and IEA expects it to approach 3 TWh by 2030.