EESD

For a very long time we have thought about electrical energy storage in terms of the battery and lately the supercapacitor. That’s because there were only two ways we thought energy could be stored. Either, as a chemical reaction – a battery – or as a physical separation of charge – a supercapacitor.

 

But electrical energy storage is so much more than that. There are a myriad of ways we can store energy in a device and with the advent of Graphene we have been able to unlock some of these other methods.

Because we have seen the problem as being one or the other that has meant we have seen the solution as one or the other. But no device operates in the real world in that way. We all know that an inductor has capacitance and a wire has resistance. There is always more than one thing in operation so it is with electrical energy storage devices. A battery has resistance and a bit of capacitance to it. This wasn’t such a problem before. But now we are able to access different storage mechanisms it has become a problem to identify what kind of device we are building and using.

That’s why Edison doesn’t work on batteries or supercapacitors – Edison works on electrical energy storage devices (EESD).

Our EESDs capture a range of mechanisms and behave sometimes like batteries (the type B EESD) and sometimes like capacitors (the type C EESD) but in reality they are entirely new devices that have behavior that tends to battery or capacitor behavior.

This means our type C will take a fast charge and release it equally as fast – just like a capacitor and our type B charges more slowly and discharges more evenly – just like a battery. But they have much more power in them.

The reason they can have so much more power in them is because we can do this at a much smaller scale because we use graphene throughout the device and because we use graphene throughout the device we can do it more efficiently and access other ways to store the energy that batteries and capacitors just can’t access.

EDISON POWER COMPANY has created an EESD that has many advantages to existing energy storage devices. The Company believes the most relevant metric for the EESD is production cost followed by life cycle and performance. In its current form the EESD will perform at about 4 times that of Lithium Ion in power density, at about ¼ of the price to produce.

Capacitor Type:
The finished phase 1 type C 10,000 cycles – probably in the region of 1,00,000 cycles given its structure and chemistry. It is water based and operating voltage of 2.15v.

Type Battery:
The phase 1 type B has a specific energy of around 114wh/kg lithium ion is 100-265W.h/kg and lead acid is 33-42wh/kg and is equally an aqueous system with an operating voltage of 1.7v and a 95% DoD.

Simplicity of Manufacturing:
During the manufacturing process, the difference in the capacitor or battery chemistry with the Edison EESD technology is an adjustment to the Graphene Ink and the use of different Electrolytes for the different products. It is a very simple process, which results in an EESD that will run over 10,000 cycles, with a production cost of less than $30.00 / kWh.