New system for batteries

ENERGY STORAGE SYSTEM ON THE SEPARATOR

New electrode printing system for any energy storage system on the separator on both sides, thus avoiding the use of metallic collectors, such as copper, aluminium, steel, etc.

By treating the electrode inks with graphene carbonaceous materials, an optimum electrode conductivity is achieved for the chemical and electrochemical reactions to take place during the charging and discharging processes, without the need to use a metal collector as a support.

This new technology off ers numerous advantages for energy storage systems, such as increased energy density, lower cost, higher cell voltage, etc.

In collaboration

Development potential

ELIMINATION OF THE USE OF COLLECTORS

Metal current collectors are one of the heaviest components of energy storage systems and are hence involved in the reduction of energy density (Wh/Kg).

Collectors are one of the most expensive components of a battery, especially nowadays with the problem of material supply and geolocation. Up to now, the solutions that have been proposed have been to reduce the thickness of the collector as much as possible in order to reduce its weight and price, however, no one has ever done away with it.

Thanks to our new technology, the electrodes of the energy storage systems can be printed directly onto the separator, which signifi cantly improves their weight, price, and energy density.

Advantages

Advantages of using our development.

Higher energy density

by avoiding the use of metallic collectors, considerably reducing the total mass of the device. As a consequence, the energy density per kg (W·h/kg) will be improved.

Reduction of the final price

One of the most expensive components of energy storage devices are the metallic collectors (e.g. Cu, Al, Ni, steel). This new technology makes these collectors unnecessary, and since they are replaced by cellulose-based inks (paper) and graphene fibres.

No collector oxidation/ reduction problems

When the solvent in the electrolyte is organic, this does not usually cause oxidation problems in the collectors. Nevertheless, if water-based electrolytes are used (much more ecological and economical).

Increased cell potential

Due to the graphene fibres hybridised with the electrode materials, we obtain an optimal conductivity for its correct behaviour without the metallic collectors. Hence, the high localised conductivity is avoided, and therefore, the cell potential can be increased by around 0.5V. In addition, this also improves the energy density, as the power is directly proportional to the voltage (P=V·I)

Applications under development

versatile technology for any storage system

It is of interest to any company involved in the manufacture of energy storage systems, whether lithium batteries, sodium batteries, capacitors, supercapacitors, hydrogen cells, etc. As it is a very versatile technology for any storage system, the producer company could be able to market its products with the same (or sometimes better) performance, but at a much cheaper cost and better energy density per kg.