Electrodes and methods of making them
AssigneePirelli Cables (2000) Limited
InventorJohn Reginald Vinson
Life of this patent
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Abstract
An electrode for electrochemical processes comprising an electrically conductive wire having a coating of a polymer having dispersed in it Magneli phase oxide particles, at least half the mass thereof being constituted by particles with diameters in the range 200 to 1000 μm. This results in a very substantial increase in conductance compared with the conventional use of particles in the approximate range 1-50 μm. To avoid breakdown of the rather fragile particles, the energy absorbed in mixing the oxide with the polymer should be restricted to at most 200J/g.
Claims14
An electrode for electrochemical processes comprising an electrically conductive wire including a coating of a polymer having dispersed in the polymer, magneli phase oxide particles, wherein at least half the mass thereof is comprised by particles with diameters in the range of 200 to 1000 μm.
A method for making an electrode comprises the steps of
- (a) dispersing particles of a Magneli phase titanium oxide in a polymer to form a mixture and
- (b) coating the said mixture on a metal wire and wherein at least half the mass of the oxide particles is comprised of particles with diameters in the range 200 to 1000 μm and the total energy absorbed by the said mixture in step (a) is not greater than 200J/g.
Dependencies are inferred from the claim text.