Modified composite electrodes with renewable surface for electrochemical applications and method of making same
First Claim
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1. A self-supporting renewable modified composite electrode for electrochemical applications comprising substantially homogeneous structure of a composition consisting of:
- (a) 1-99 percent by weight of a non-conductive polymeric matrix having a polymer-chain in which a modifier is dispersed and(b) 1-99 percent by weight of a conductive filler dispersed throughout said matrix and sufficient to provide electrical conductivity in the electrode, said modifier providing to said electrode distinctive properties selected from the group consisting of electroactivity, inclusion, acidic/basic, complexing/chelating, and electrocatalysis, said body being formed by polymerization of a resinous composition with said filler dispersed therein, said electrode being homogeneous throughout its cross section so that the electrode is renewable by removal of a surface portion to expose a fresh portion thereof.
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Abstract
Renewable modified composite electrodes for electrochemical application are provided by homogeneous structure of a conductive filler disposed in a polymeric matrix or binder containing a modifier in the polymer chain. The modifier provides distinctive characteristics of electroactivity, inclusion, acidic/basic, complexing/chelating or electrocatalysis to the surface of the electrode in a solution. After use, the electrode may be renewed by removing a surface portion and thereby exposing a fresh portion of the homogeneous structure.
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Citations
10 Claims
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1. A self-supporting renewable modified composite electrode for electrochemical applications comprising substantially homogeneous structure of a composition consisting of:
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(a) 1-99 percent by weight of a non-conductive polymeric matrix having a polymer-chain in which a modifier is dispersed and (b) 1-99 percent by weight of a conductive filler dispersed throughout said matrix and sufficient to provide electrical conductivity in the electrode, said modifier providing to said electrode distinctive properties selected from the group consisting of electroactivity, inclusion, acidic/basic, complexing/chelating, and electrocatalysis, said body being formed by polymerization of a resinous composition with said filler dispersed therein, said electrode being homogeneous throughout its cross section so that the electrode is renewable by removal of a surface portion to expose a fresh portion thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification