High temperature molten salt electrochemical in situ synchrotron radiation research device

Abstract

The invention discloses a high-temperature fused salt electrochemistry in-situ synchronous radiation studying device which comprises a vacuum furnace, a fused salt tank, a heating device, a baffle arranged at the opening of the vacuum furnace and a three-electrode system. A cavity is formed in the vacuum furnace which comprises a furnace body, an opening is formed in the top of the furnace body, an incidence window, a transmission window and a fluorescence window are formed in the wall of the furnace body, the incidence window and the transmission window are in coaxially collinear arrangement, and axis of the fluorescence window and that of the incidence window are positioned on a same horizontal plane; the fused salt tank and the heating device are arranged in the cavity of the vacuum furnace, the three-electrode system is used for providing electrochemical reaction for a system in the fused salt tank, and three electrodes are connected with an electrochemistry workstation through leads. By adopting the device, electrochemical reaction at high temperature can be realized, and substance change in the electrochemical process can be detected by means of fluorescent detection.

Description

technical field [0001] The invention relates to a high-temperature in-situ synchrotron radiation research device, in particular to a high-temperature molten salt electrochemical in-situ synchrotron radiation research device. Background technique [0002] In order to achieve the sustainable development of nuclear energy, my country is developing a new generation of nuclear energy systems, and the spent fuel produced by the new generation of nuclear energy systems has stronger radioactivity, higher heat release rate, and increased content of fragment elements. It is necessary to actively develop dry reprocessing technology . Dry post-processing generally refers to the process of separating actinides (An) from other splinter elements in a non-aqueous medium. Currently the most promising dry post-processing technology is the molten salt electrorefining process based on molten salt electrolysis. In the electro-refining process, the chemical species state of spent fuel elements i...

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Problems solved by technology

However, this design cannot be applied to the in-situ EXAFS measurement in the electrochemical process of molten salts, because the sample cell is not connected with the outside world, and can only obtain static material structure information; without involving the electrode system, the dynamics of the electrochemical process cannot be obtained. change in material structure

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