For LIB anodes

Carbon/Si materials for LIB anodes

Our LIB anode materials are synthesized by processing the carbon in the presence of nano-silicon, resulting in a C/Si composite. Different ratios of C:Si have been synthesized to address different performance requirements (capacity, cycle-life, etc.). Advantages of our process include the ability to synthesize a very homogeneous composite with stable C/Si interface properties.
The current industry standard graphite-based anode materials offer a capacity of ~372 mAh/g. The next generation of C/Si anode materials are projected to have capacities between 500 mAh/g and 2500 mAh/g, enabling high energy-density and fast charging applications.

For LIB cathodes

Carbon/S materials for LIB cathodes

For next-generation high energy-density batteries, Li-sulfur batteries have great potential. We are using our carbon composite technology to synthesize pre-lithiated carbon/sulfur materials for cathode applications in Li-S batteries. The sulfur component of the C/S composites is uniformly distributed in the carbon matrix – whose hardness and porosity levels can be adjusted via our processing parameters.
Our C/S materials also allow the use of carbon-based anodes – thereby eliminating the need to use expensive lithium-based anodes.

For NIB electrodes

Carbon/S and hard carbon materials for NIB electrodes

Carbon/S and hard carbon materials for NIB cathodes and anodes
For sodium-ion batteries, the same process is used to synthesize pre-sodiated carbon/sulfur cathode materials. Also, since NIBs cannot use graphite anodes, our hard carbon anode materials synthesized using the same platform technology – are suitable for NIB anode applications.
As we use carbon-based materials for both electrodes – we can significantly reduce the cost ($/kWh) of these cells, enabling cost sensitive applications like grid-attached energy storage and the emerging small electric-vehicle market.

For LIC electrodes

Carbon materials for ultrafast dual carbon lithium-ion capacitors

This type of ultra-fast charging LIC requires a high porosity activated carbon for its cathode and a high capacity hard carbon anode. We use our carbon technology process to synthesize advanced carbons for both these electrodes. The hard carbon anode material has a capacity of ~400 mAh/g, with excellent capacity retention even at a C-rate of 100. This type of performance (fast charging capability) is not possible with conventional graphite anode materials.

For EDLC electrodes

Activated carbon materials for EDLC electrodes

The key requirement for next generation, high capacitance EDLC carbons is the ability to control the pore size distribution and to match it with the appropriate next-generation high-voltage electrolytes. Our process allows us to synthesize activated carbons that are inherently denser than the current generation of coconut-shell char-based carbons, and can reach high specific capacitance values with surface areas up to 3000 m2/gm. Controlling the impurities is also key for EDLC applications since the presence of impurities like Fe, Cl, S etc. will increase the self-discharge rate of the EDLC. Our activated carbons have been measured to have a total impurity content of less than 100 ppm.
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