Multilayer electrode
OwnerMartha Maly-Schreiber, Adam Harding Whiteheadinventors
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OwnerMartha Maly-Schreiber, Adam Harding Whiteheadinventors
Estimating the term…
The invention relates to an essentially flat electrode of an electrochemical system, such as a battery or a capacitor. Said electrode is comprised of at least one conductive (3) and of a storage layer (4), which is connected to said conductive layer, has a lattice structure, is comprised of woven or knit plastic threads (5) that are rendered conductive, and in which electro-active material is embedded. The aim of the invention is to improve the volumetric and gravimetric energy density with an adequate mechanical stability and simplified production. To this end, the local lattice structure of the storage layer (4) is matched to the size and electrical conductivity of the particles (1) of the embedded electro-active material and is matched to the current density, which exists each time during the operation of the system, in such a manner that in the case of poor conductivity of the particles (1) and/or of high local current density, essentially each individual particle (1) is in direct contact with the lattice threads (5), whereas in the case of good conductivity of the particles and/or of low local current density, particles (1) that are not themselves in direct contact with the lattice threads (5) are also located in a lattice pocket (6).
A multi-layered and essentially flat electrode of an electrochemical system, particularly a battery or a capacitor, comprising of at least one highly conductive layer (3) and a storage layer (4) that is electrically connected to said conductive layer, a lattice structure having a storage layer made of woven or knitted plastic threads (5) that are rendered conductive, preferably threads made of synthetic material, in which electro-active material is embedded together with possible additives, characterized in that the local geometry of said lattice structure of said storage layer (4) is matched to the size and the electrical conductivity of the particles (1) of the embedded electro-active material and to the electric current density existing during the respective operation of said system in such a manner that, in case of poor conductivity of the particles (1) and/or of high local electric current density, essentially each individual particle (1) is in direct contact with said lattice threads (5), whereas, in case of good conductivity of the particles and/or of low local electric current density, particles (1) without their own direct contact with said lattice threads (5) have room in a lattice pocket (6), whereby the lattice pockets (6) have a larger volume with added distance away from the conductive layer (3) and/or from an external connection of the conductive layer (3).
Dependencies are inferred from the claim text.