High-temperature molten salt electriochemistry testing system

Abstract

The invention discloses a high-temperature molten salt electriochemistry testing system applicable to a temperature range of 750 DEG C - 900 DEG C; the high-temperature molten salt electriochemistry testing system comprises a high-temperature electric resistance furnace, high-temperature electriochemistry electrodes and a high-temperature molten salt crucible. A high-temperature molten salt reference electrode (2) is mainly composed of a first electrode stem (24) and a sleeve; the first electrode stem (24) is packaged in a first aluminum oxide sleeve (25) sealed by cement (27); a high-temperature molten salt working electrode (3) is mainly composed of a second electrode stem and a sleeve; the main body of the second electrode stem is packaged in a second aluminum oxide sleeve (32) including sealing cement, thus ensuring heat insulation and uniform distribution of heat under the condition of high temperature; a crucible cover (64) which is provided with a central hole (65) and made of ceramic is placed at the top of the crucible (6); the crucible cover (64) can effectively prevent electrolyte from volatilizing due to melting in high temperature, and thereby the furnace body of the electric resistance furnace is prevented from being eroded by volatilization of the molten electrolyte.

Description

Technical field [0001] The invention relates to a test system for high-temperature electrochemical experiment research, in particular to a test system capable of performing electrochemical experiments in a high-temperature molten salt system and applicable environmental conditions in the range of 750-900°C. Background technique [0002] The high-temperature molten salt electrochemical test system is mainly composed of a high-temperature electric furnace, a high-temperature electrochemical electrode and a high-temperature molten salt crucible; the high-temperature electric furnace provides heat to generate a high-temperature environment, and the high-temperature electrochemical electrode is used to connect the electrochemical workstation and the high-temperature molten salt system. The salt crucible provides a place for high-temperature molten salt and electrochemical electrodes. [0003] At present, there are many technical problems in the latter two parts of the high temperature m...

AI Technical Summary

Problems solved by technology

Generally, there are three problems: (1) The medium in the high-temperature reference electrode is easy to contaminate with the corrosive medium, which leads to the drift of the reference potential of the reference electrode, which leads to the instability and fluctuation of the current circuit monitored during the electrochemical test; (2) The connection between the test piece and the metal wire of the high-temperature working electrode is easy to break or is partially weak, and the metal wire used for connection is often polluted and damaged during use; (3) The high-temperature molten salt electrochemical test container is in the High temperature conditions are prone to be polluted by volatile media and cause damage to equipment

These will lead to obvious errors in the working electrode parameters recorded during the test, seriously affecting the reliability of the test data in the high-temperature molten salt electrochemical test, and making it impossible to scientifically analyze and evaluate the research system

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