Electrochemical sensors including electrode systems with increased oxygen generation

  • US 20050051440A1
  • Filed: 07/21/2004
  • Published: 03/10/2005
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
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First Claim
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1. An electrochemical sensor for determining a presence or a concentration of an analyte in a fluid, the sensor comprising:

  • a membrane system comprising an enzyme that reacts with the analyte;

    a first working electrode comprising a conductive material, wherein the first working electrode is configured to measure a product of the reaction of the enzyme with the analyte; and

    an auxiliary electrode comprising a conductive material, wherein the auxiliary electrode is configured to generate oxygen, wherein the auxiliary electrode is located at a proximity to the first working electrode such that oxygen generated at the auxiliary electrode diffuses to the enzyme at a location substantially above the first working electrode.

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