Circulating type high-pressure hydrothermal three-electrode electrochemical measurement system

Abstract

The invention discloses a circulating type high-pressure hydrothermal three-electrode electrochemical measurement system. The system comprises a reaction container, a sample injection pipeline, an outflow pipeline, a reference pipeline, an electrode base, a working electrode assembly, an auxiliary electrode assembly and a reference electrode assembly. The working electrode assembly comprises a working electrode, a first lead and a pre-sealing assembly. The pre-sealing assembly comprises an insulating sleeve and a tightening piece. The insulating sleeve sleeves a second substrate and a mineralelectrode, and the tightening piece sleeves the outer surface of the insulating sleeve. In the working state, the testing end of the working electrode makes contact with fluid, initial sealing is formed by means of tiny stress generated by the tightening piece, the insulating sleeve is extruded by means of pressure of water fluid, and therefore the sealing effect under high pressure is achieved, and a tested electrode is in a quasi-isostatic pressing state. The problem that an existing circulating type high-pressure hydrothermal three-electrode electrochemical measurement system is low in experiment success rate, poor in accuracy, limited in use occasion and the like in a high-pressure hydrothermal system can be solved.

Description

technical field [0001] The invention relates to a flow-through high-pressure hydrothermal three-electrode electrochemical measurement system, which belongs to the technical field of three-electrode electrochemical measurement. Background technique [0002] Corrosion kinetics and thermodynamic processes of materials in high-pressure hydrothermal systems, as well as the physical and chemical properties of high-pressure hydrothermal systems are key research objectives in the field of high-pressure hydrothermal science. The three-electrode electrochemical measurement technology is an important method to understand the corrosion behavior of materials in fluids and the physical and chemical properties of the fluid itself. Therefore, it is important to establish a three-electrode electrochemical measurement system for high-pressure hydrothermal systems that can meet the existing requirements. meaning. [0003] The existing three-electrode electrochemical measurement systems of hig...

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