Method for forming a slurry battery cell
AssigneePolaroid Corporation
InventorOtto E. Wolff
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Abstract
A method for forming a slurry cell electrode structure which serves as a component of a planar battery. The slurry electrode structure is formed in situ as a particulate dispersion of active material in aqueous electrolyte. The method utilizes a slurry precursor prepared by predepositing a liquid carried dispersion of the particulate active material over the surface of a select component, such as a separator, current collector, or intercell connector of the cell. This deposition is dried and prepared as a subassembly which is appropriately inserted within the multicell pile structure as a step in the manufacture of a multicell battery. By wetting the subassembly with a wash coat of aqueous electrolyte, in situ slurry formation is provided.
Claims11
The method of forming a planar battery cell electrode comprising a particulate dispersion of active electrode material in aqueous electrolyte, comprising the steps of depositing a dispersion of said particulate active electrode material in a solution of water and a water-soluble binding agent on at least a portion of the surface of a select component of said cell, drying said dispersion sufficiently to provide a manipulatory laminar subassembly of said particulate material adhered to said component by said binding agent, positioning said subassembly at an electrode defining site, and wetting said particulate material with an aqueous electrolyte solution in which said binding agent is soluble to dissolve said binding agent and thereby form an aqueous slurry of said particulate material.
Dependencies are inferred from the claim text.