Adherent metal oxide coating forming a high surface area electrode

• Main Authors: TALBOT NEIL HAMILTON, GREENBERG ROBERT J, ZHOU DAVID D
• Format: Patent
• Language: English
• Published: 12.04.2016
• Subjects: APPARATUS THEREFOR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROTHERAPY; HUMAN NECESSITIES; HYGIENE; MAGNETOTHERAPY; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; RADIATION THERAPY; ULTRASOUND THERAPY

An implantable electrode and method for manufacturing the electrode wherein the electrode has a strong, adherent surface inert coating on a conductive coating on the electrode surface, which demonstrates an increase in surface area of at least five times when compared to smooth platinum of the same geometry. An iridium oxide coating may be formed on a platinum coating by a physical deposition process, such as sputtering. The process of electroplating the iridium oxide surface coating is accomplished by voltage control processes. A gradient coating of iridium oxide ranging in composition from essentially pure platinum to essentially pure iridium oxide is produced by sputtering.