Electrode for electrochemical cell
AssigneeImperial Chemical Industries PLC
InventorThomas Boulton
Life of this patent
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Abstract
An electrode for use in an electrochemical cell and comprising a composition of a mixture of a plastics material and an electrically conducting fibrous material which has a ratio of length to diameter (L/D) of at least 50, and preferably at least 100. The composition may comprise 1% to 10% by volume of electrically conducting fibrous material and the plastics material is preferably a thermoplastic material.
Claims17
An electrode suitable for use in an electrochemical cell and consisting essentially of a composition of a plastics material and an electrically conducting fibrous material in which the fibres of the fibrous material have a ratio of length to diameter of at least 50 and in which the composition comprises from 1% to 20% by volume of electrically conducting fibrous material, the electrical conductivity of the fibrous material, the volume of said fibrous material and the ratio of length to diameter alone being sufficient to provide the electrode with the necessary electrical conductivity for use in an electrochemical cell.
An electrode as claimed in claim 5 in which the bulk electrical resistivity is less than 10.sup.-4 ohm cm.
An electrode as claimed in claims 1 to 6 in which in the composition the diameter of the electrically conducting fibrous material is 0.05 mm or less.
An electrode as claimed in claim 8 in which the metal is selected from a film-forming metal, iron, copper and nickel.
An electrochemical cell as claimed in claim 16 in which a separator is positioned between each anode and adjacent cathode.
Dependencies are inferred from the claim text.