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Smaller, Lighter, Faster and longer life Ultracapacitors

EnyGy's leading Scientists

At enyGy we develop graphene-based electrode films that enable the manufacture of ultracapacitors with significantly higher energy densities. Current ultracapacitor technology has low energy densities (3-8 Wh/L). This results in bulkier, non-compact devices. An ultracapacitor that incorporates enyGy’s graphene-based technology produces an energy density of up to 6-16 Wh/L. This is up to 2x higher than that of current commercially available ultracapacitors. Ultracapacitors can then be reduced to smaller sizes with the same energy level, reducing costs of production, and ideal for space constrained applications.

Above: EnyGy's leading Scientists.

Ultracapacitor diagram

Ultracapacitors (also known as supercapacitors) are an energy storage technology that offers high power density, almost instant charging and discharging, high reliability, and very long lifetimes.

They are effectively an electrostatic device storing its electrical energy in the form of an electric field between its two conducting electrodes. This is unlike a conventional battery, which has chemical reactions involved in the storing of its electrical energy.

Most ultracapacitors in the market are Double-layer capacitors (EDLCs) manufactured using electrodes made from nanostructured carbon-based materials. EnyGy is able to improve ultracapacitor performance by replacing these electrodes with nano-engineered graphene-based electrode films.


Ultracapacitor Use Cases Ultracapacitors are used in applications with energy storage undergoing frequent charge and discharge cycles at high current and short duration. Some such applications are automobiles, buses, trains, cranes and elevators, where the ultracapacitors are used for regenerative braking, short-term energy storage, or burst-mode power delivery.


EnyGy graphene is manufactured through a low-cost, patented proprietary process, preserving its high electrical and thermal conductivity. The technological nanomaterial innovations at enyGy have made the use of graphene economically and commercially viable. Remarkably, enyGy has been able to achieve this without compromising the power density benefits (the ability to release and accept a large amount of energy in a short amount of time, resulting in fast charging).

EnyGy® Proprietary Graphene Film

The key challenge is to process the graphene-based materials at macroscopic level while being able to finely control its structure and chemistry at nanometer scale, so that we can preserve the fantastic properties of graphene at bulk level. We have achieved it.” - EnyGy Chief Technology Officer, Dr. Yufei Wang

Above: EnyGy® Proprietary Graphene Film.


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