Brevet Année : 2021

Method for selectively separating a carbon-containing material from a mixture of positive electrodes and negative electrodes

Procédé de séparation sélective d'un matériau carbone d'un mélange d'électrodes positives et d'électrodes négatives

Résumé

Disclosed is a method for selectively separating a carbon-containing material from a mixture comprising a positive electrode and a negative electrode originating from fuel cells and/or electrochemical batteries, the method comprising the following successive steps: a) providing a mixture comprising a positive electrode and a negative electrode, each electrode comprising a current collector, an active material and a binder, the active material of the negative electrode being a carbon-containing material, preferably graphite, b) bringing the mixture comprising the positive electrode and the negative electrode into contact with a separating solution, in the presence of ultrasound, the separating solution comprising a solvent and possibly additives, until the carbon-containing material is selectively separated from the current collector of the negative electrode, the active material of the positive electrode remaining joined to the current collector of the positive electrode.

Domaines

Fichier non déposé

Dates et versions

hal-04675862 , version 1 (22-08-2024)

Identifiants

  • HAL Id : hal-04675862 , version 1

Citer

Emmanuel Billy. Method for selectively separating a carbon-containing material from a mixture of positive electrodes and negative electrodes. France, Patent n° : WO2021/240113. 2021. ⟨hal-04675862⟩
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