Method for dissolving a positive electrode material
AssigneeOrano
InventorEmmanuel Billy
Life of this patent
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Abstract
A method for dissolving a positive electrode material of a battery including a step during which the positive electrode material, comprising lithium and optionally cobalt and/or nickel, is submerged in an acid solution having a pH between 0 and 4, the acid solution containing either manganese ions or hydrogen peroxide, by means of which the lithium and optionally the cobalt and/or nickel is dissolved, and the manganese ions are selectively precipitated in the form of manganese oxyhydroxide.
Claims15
A method for dissolving a positive electrode material of a battery comprising a step during which the positive electrode material, including lithium, manganese and possibly cobalt and/or nickel, is immersed in an acid solution at a pH comprised between 0 and 4,
- wherein the acid solution contains hydrogen peroxide, whereby, on the one hand, the lithium and possibly the cobalt and/or the nickel are put into solution and, on the other hand, the manganese is dissolved, which selectively precipitates in the form of a manganese oxyhydroxide.
Dependencies are inferred from the claim text.