Oxygen electrode and method for preparation thereof

Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating

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128635, 204 32R, 204 38A, 427 41, 4272556, G01N 2730, G01N 2740, B05D 314

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active

042761441

ABSTRACT:
An oxygen electrode adapted for use for polarographic, galvanometric or amperometric analyses, that is resistant to poisoning and effective for accurate,reproducible current and voltage measurements. The electrode comprises a conductor constituted of a metal which catalyzes the cathodic reduction of oxygen, an electrical lead electrically connected to the conductor, and an insulating jacket covering all of the conductor except a working surface thereof that is adapted to communicate with an oxygen-containing environment for the cathodic reduction of oxygen. The conductor has a layer of an oxide of the aforesaid metal at its working surface. There is a thin polymeric coating over said oxide layer and securely adhered to the working surface. The coating comprises a polymer produced by glow discharge polymerization of an aliphatic hydrocarbon and has such properties to permit the reduction of oxygen at the electrode by electrons supplied at the working surface through the lead and conductor.
A method for preparing the electrode is also disclosed.

REFERENCES:
Michael L. Hitchman, "Measurement of Dissolved Oxygen", Chap. 4, pp. 59-70, (1978).
I. A. Silver et al., "Oxygen Transport to Tissue-III", pp. 9-14, (Plenum Press), (date unknown).
V. G. Murphy et al., Biomedical Sciences Instrumentation, vol. II, pp. 31-36, Apr. 1975.
Ashok K. Sharma et al., J. Appl. Physics, 49, 10, pp. 5055-5059, Oct. 1978.
H. Yasuda et al., J. Polymer Science: Polymer Chemistry Edition, vol. 16, p. 743, (1978).
H. Yasuda, "Glow Discharge Polymerization", pp. 361-398, vol. IV-2, (Academic Press, Inc.), (1978).
A. W. Hahn et al., "Plasma-Formed Polymers for Biomedical Applications", NBS Spec. Pub. 415, pp. 13-17, (1975).
K. G. Mayhan et al., "Plasma-Formed Polymers for Biomedical Applications", NBS Spec. Pub. 415, pp. 1-12, (1975).
K. G. Mayhan et al., "A New Approach to Coating Oxygen Electrodes", 25th ACEMB, Oct. 1-5, 1972.
T. E. Tang et al., J. of Bioengineering, vol. 2, pp. 381-388, (1978).

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