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Apparatus for use in electrical, e.g. electrochemical, measurement procedures, and its production and use, and composite assemblies incorporating the apparatus

  • US 6,066,244 A
  • Filed: 02/28/1992
  • Issued: 05/23/2000
  • Est. Priority Date: 10/31/1984
  • Status: Expired due to Term
First Claim
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1. A composite electrode comprising:

  • a solid non-conducting substrate;

    metallic particles;

    a non-conductive matrix layer in which the metallic particles are incorporated, andinsoluble metal salt particles which are of the same metal as the metallic particles, which are incorporated in said non-conductive matrix and which are accessible to reactions with electrochemical reagents at the surface of the electrode, such that there are insoluble metal salt particles located between the metallic particles and the surface of the electrode and the surface of the electrode predominantly comprises metal salt particles whereby the ratio of metallic particles to insoluble metal salt particles gradually increases from the outermost towards the innermost portions of the non-conductive matrix layer.

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