Reference electrode for electrochemical measurements at high temperatures
A reference electrode which is stable over a wide range of temperatures, pressures and chemical conditions is provided. The subject reference electrode according to the present invention comprises a tubular enclosure composed of quartz having a distal, closed end and a proximal, open end. An insulating ceramic rod is seemingly connected to the opening in the closed distal end of the enclosure to form micro-cracks between the ceramic rod and the quartz enclosure (called a cracked junction, CJ). The CJ gives a very tortuous path for ion conduction from inside the reference electrode (RE) to a working electrode (WE). Inside the tubular enclosure is an electrical lead (e.g., a silver wire) disposed in an electrolyte comprising a mixture of alkaline metal salts (e.g., AgCl and KCl), extending from the electrolyte upward through a sealing means at the proximal end of the quartz enclosure.
- Research Organization:
- Univ. of Arizona, Tucson, AZ (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0005942
- Assignee:
- Arizona Board of Regents on behalf of Arizona State University (Tucson, AZ)
- Patent Number(s):
- 10,908,119
- Application Number:
- 15/778,558
- OSTI ID:
- 1805463
- Resource Relation:
- Patent File Date: 11/21/2016
- Country of Publication:
- United States
- Language:
- English
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