Electrochemical sensors with solid polymer electrolytes Original Research Article

Electrochemical sensors with an electrode system formed on a solid polymer electrolyte (spe) enable detection of substances in poorly conductive liquids and in gases and can be constructed either with a liquid phase as a part of the sensor system, or as solid-state sensors. The basic properties of spe, especially Nafion, are discussed as are the methods of preparation of electrodes on the spe surface. The effects of the geometry, preparation procedure and the character of the spe/electrode boundary on the sensor properties are examined. Principal sensor designs are described and discussed and selected applications are surveyed in the tables.