(EP1008202-A1)      A method of making an electrochemical cell component comprising a polymer comprises mixing a primarily vinylidene fluoride (VdF) polymer with at least one other ingredient of the component, and extruding the mixture at a temperature above the melting point of the polymer to melt-cast a non-porous film or sheet of the cell component.    USE -   In an electrical cell as a composite electrode or electrolyte layer (all claimed), preferably in a lithium swing cell (i.e. without lithium metal) with a composite extruded anode and cathode, each comprising a polymer and appropriate insertion materials, and separated by an extruded electrolyte.    ADVANTAGE -   The process avoids the need to evaporate large quantities of a low-boiling solvent, as required in a solution casting process.    (TW409436-A)      A method of making an electrochemical cell component comprising a polymer comprises mixing a primarily vinylidene fluoride (VdF) polymer with at least one other ingredient of the component, and extruding the mixture at a temperature above the melting point of the polymer to melt-cast a non-porous film or sheet of the cell component.    USE -   In an electrical cell as a composite electrode or electrolyte layer (all claimed), preferably in a lithium swing cell (i.e. without lithium metal) with a composite extruded anode and cathode, each comprising a polymer and appropriate insertion materials, and separated by an extruded electrolyte.    ADVANTAGE -   The process avoids the need to evaporate large quantities of a low-boiling solvent, as required in a solution casting process.    (JP2001511593-W)      A method of making an electrochemical cell component comprising a polymer comprises mixing a primarily vinylidene fluoride (VdF) polymer with at least one other ingredient of the component, and extruding the mixture at a temperature above the melting point of the polymer to melt-cast a non-porous film or sheet of the cell component.    USE -   In an electrical cell as a composite electrode or electrolyte layer (all claimed), preferably in a lithium swing cell (i.e. without lithium metal) with a composite extruded anode and cathode, each comprising a polymer and appropriate insertion materials, and separated by an extruded electrolyte.    ADVANTAGE -   The process avoids the need to evaporate large quantities of a low-boiling solvent, as required in a solution casting process.