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Ultra high dielectric constant energy storage device will lead to smaller batteries

Solid-state single layer energy storage devices

Unlike electrolytic ultracapacitors, solid state ultracapacitors do not use an electrolyte. Instead, they incorporate a solid dielectric with an extremely high dielectric constant. Referring to the equations given above, the potential energy of the capacitor is directly proportional to the dielectric constant.  Thus, by incorporating a super-dielectric with a dielectric constant in the order of 106 capacitors with extremely high power densities can be constructed.

We have developed such a dielectric. Its dielectric constant of 16 million is the highest value yet reported. Typically a stack of 6,000 layers of 400 cm2 and a charging voltage of 600 V would deliver 85 kWh and a power density of 7.78 kW/kg.

Charge time

A huge advantage of SSESD over electrolytic ultracapacitors is the charge time. Charge time is governed by the supply voltage and the equivalent series resistance (ESR) of the capacitor. The ESR is complex and determined by a range of factors including the materials used and the mechanical construction. In a conventional ultracapacitor, the ESR is relatively high, though polymer type  ultracapacitors can be constructed with lower ESR but still substantially higher than the SSESD. Typical charge times range from 1 to 10 seconds.

In the case of our SSESD, the charge is stored on the dielectric/metal interface. The ESR very much lower and fast charge times can be achieved. Currently, we are seeing charge times for several layers of less than one second. 

The Ultracapacitor solar panel & electric vehicle energy storage device is set to revolutionise the transportation as we know it.

  • Clean, green and emission-free
  • Fast charging and long lasting
  • Long life
  • Cheap to produce
  • Small and lightweight

In the past, solar panel energy collection batteries were developed based on acid technologies. This was bad for the environment and meant bulky, heavy batteries that were expensive to produce and not particularly efficient, being slow to charge and quick to drain. Moreover, these batteries have a short lifespan and degrade quickly, making them expensive to replace.

Due to our all-ceramic, high capacity energy storage device for solar panels and electric vehicles that uses an advanced form of ultracapacitor, we are now able to develop an electric vehicle energy storage device that is light years ahead of anything else out there.

By making the ceramic di-electric component much thinner and lighter without any loss of electrical capacity – we have been able to develop a significantly smaller, lighter battery. In fact, we believe we can go even further, produce pocket-sized car batteries in the very near future.

But size is only where the benefits begin. Potentially, our new battery can be charged in minutes in a typical 220V wall socket, as opposed to hours currently needed in a special charging unit. This, we believe, has been one of the biggest obstacles to electric vehicle uptake – a barrier we have removed through three years of research and development.

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