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US 12,586,774 B2Granted
Porous electrodes for electrochemical devices
AssigneeI-Ten
InventorFabien Gaben
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AssigneeI-Ten
InventorFabien Gaben
Estimating the term…
A system and method for producing a porous electrode with a high level of porosity, preferably mesoporosity, without the use of a binder. The electrode is formed by depositing a layer on a substrate from a colloidal suspension containing aggregated or agglomerated nanoparticles. Deposition methods include electrophoresis, ink-jet printing, doctor blade, roll coating, curtain coating, or dip-coating. The process includes drying and may involve additional consolidation steps such as pressing and/or heat treatment to enhance structural integrity, electrical conductivity, and adhesion. The heat treatment induces partial coalescence of nanoparticles, creating a three-dimensional porous structure that facilitates ion mobility. A thin coating of an electrically insulating or ion-conductive material may be applied to reduce interfacial reactions. The resulting porous electrode may be used in energy storage applications, such as lithium-ion batteries. The invention also includes a method for manufacturing batteries utilizing these electrodes and related battery designs.
A porous ceramic electrode with a porosity greater than 30% by volume comprising pores with an average diameter less than 80 nm, said electrode comprising consolidated particles of a material P having an average primary particle diameter D50 less than 80 nm forming a three-dimensional network of welded and interconnected particles, characterized in that it is binder-free.
A battery comprising at least one porous ceramic electrode with a porosity greater than 30% by volume comprising pores with an average diameter less than 80 nm, said electrode comprising consolidated particles of a material P having an average primary particle diameter D50 less than 80 nm forming a three-dimensional network of welded and interconnected particles, characterized in that said electrode is binder-free.
A porous ceramic electrode comprising a porous electrode layer with a porosity greater than 30% by volume comprising pores with an average diameter less than 80 nm, said electrode comprising consolidated particles of a material P having an average primary particle diameter D50 less than 80 nm forming a three-dimensional network of welded and interconnected particles, characterized in that it is binder-free and that it comprises a dielectric layer coating the porous electrode layer.
Dependencies are inferred from the claim text.