COMPOSITE ELECTRODE

 
 

 

We are involved in development and low-volume manufacturing of composite electrodes and active polymeric electrolytes for advanced hybrid ultracapacitors, secondary (rechargeable) batteries and metal-anolite/air hybrid battery-fuelcell. Our designs are based on 3D carbon conductive matrix like foams and felts, where we grown active materials with redox or double layers behaviours. Alternatively we modify the same 3D structures to become “active” for the intercalation/deintercalation of ions or for electrodeposition of active materials. Many of these 3D structures are so electrically conductive that work also as current collectors, and can be use in the manufacturing of pouch-cell-like batteries and ultracapacitors. Regarding active polymeric electrolytes, that we named PACE, we developed and patented polyelectrolytes based on Fulvic Acids doped with several multivalent cations-anions.

 

 

The graphite felts and foams:

 

Based on graphitization of high-quality PAN (polyacrylonitrile) felts made from spun bond method and graphitized at very high temperature to obtain an high-surface graphitic carbon 3D structure with a purity >99,8% and surface resistivity <xxxx Ohm/sqr-Inch. The foams are, conversely, made from a 3D-foam of PAN, also graphitized at very high temperature and with same high purity. Thickness varied between 2 and 5 mm with many densities available.

 

Modifications

 

With an our patended continuos-flux SILAR methods (Successive Ionic Layer Adsorption Reaction) we deposit thin layer metal oxides for redox behavior or ions intercalation/deintercalation.Some of these electrodes can also be used as redox cathode in metal/air batteries, without use of noble metals and are supplied complete of hydrophobic layers.Alternatively, we can create “defects” on the matrix of the graphite, to allow the electrodeposition of metals, without dendrite grows, This allow the development of a new series of “rocking-chair” batteries based on cations of metal like Lithium, zinc, magnesium and may be (researchers are experimenting) other alkali alkali-heart and transition metals. These “defective” modified 3D electrodes, can also be validly used to make Radiant energy Conversion devices, based on Tesla models. The high conductive surface allow to capture more ions of these electroed immersed in fluids (also flowing salt water)

 

The active carbon felts

 

For cheaper double-layer supercapacitor, we offer mesoporous active carbon felts with surface area >1800Mq/gr coupled with Nickel metallic film or aluminium thin film, simplify assemblage of pouch-cell supercapacitors, perhaps using our PACE and ACE electrolytes to obtain high capacities and specific energies. Thicknes available is of 2mm and surface resistivity <xxx Ohm/square inch.

 

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