In-situ Raman flow cell of electro-catalysis system

Abstract

The utility model discloses an in-situ Raman flow cell of an electro-catalysis system, which comprises a flow cell body provided with a quartz window and a cover plate; a buffer structure is arranged below the quartz window sheet, and a plurality of runners are arranged on the buffer structure in a penetrating manner; in the flow cell body, an upper cell body is formed between the space above the buffer structure and the space below the quartz window sheet and the cover plate; a lower cell body is formed in a space between the lower part of the buffer structure and the bottom of the flow cell body; an electrode tip of a working electrode in the working electrode assembly is propped against the quartz window sheet, so that an electrolyte film flows between the electrode surface of the working electrode and the quartz window sheet, and bubbles generated on the electrode surface of the working electrode during reaction are taken away, so that the electrode surface of the working electrode is clear. According to the in-situ Raman cell disclosed by the utility model, the defect that an in-situ Raman cell of an existing electro-catalysis system cannot realize real-time monitoring of an electrochemical transient reaction process and a product is overcome through structural transformation.

Description

Technical Field

[0001] The utility model relates to the field of electrochemical instruments, in particular to an in-situ Raman flow cell of an electrocatalytic system. Background Art

[0002] Electrochemistry, a branch of chemistry, studies the charge and electron transfer that occur at the interface between two types of conductors (electronic conductors, such as metals or semiconductors, and ionic conductors, such as electrolyte solutions). Traditionally, electrochemistry primarily studies the conversion between electrical and chemical energy, as exemplified by electrolysis and galvanic cells. However, electrochemistry is not limited to chemical reactions involving electrical energy but also encompasses other physical and chemical processes, such as electrochemical corrosion of metals and metal displacement reactions in electrolyte solutions. Electrochemistry has evolved into several branches, including synthetic electrochemistry, quantum electrochemistry, semiconductor electrochemistry, organic conductor electrochemistry, spectroelectrochemistry, and bioelectrochemistry. Electrochemistry has found widespread application in a variety of scientific and technological fields, including chemical engineering, metallurgy, machinery, electronics, aviation, aerospace, light industry, instrumentation, medicine, materials, energy, metal corrosion and protection, and environmental science. Current research topics of global interest, such as energy, materials, environmental protection, and life sciences, are intertwined with electrochemistry in various ways. Electrochemistry experiments require the use of flow cells, within which solutions are analyzed and tested.

[0003] However, the existing in-situ Raman cell of the electrocatalytic system cannot achieve real-time monitoring of the electrochemical transient reaction process and products. Utility Model Content

[0004] To overcome the above-mentioned defects of the prior art, the present invention aims to provide an in-situ Raman flow cell for an electrocatalytic system. Through structural modification, the present in-situ Raman flow cell can solve the defect that the existing electrocatalytic system in-situ Raman cell cannot realize real-time monitoring of the electrochemical instantaneous reaction process and products.

[0005] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0006] An in-situ Raman flow cell for an electrocatalytic system, comprising:

[0007] a flow cell body, on which a quartz window and a cover plate are arranged;

[0008] A buffer structure is provided below the quartz window, and a plurality of flow channels are provided through the buffer structure;

[0009] In the flow cell body, an upper cell body is formed between the space above the buffer structure and below the quartz window and the cover plate;

[0010] A lower cell body is formed in the space between the bottom of the buffer structure and the bottom of the flow cell body;

[0011] The electrode head of the working electrode in the working electrode assembly abuts against the quartz window, so that the electrolyte film flows between the electrode surface of the working electrode and the quartz window, thereby removing bubbles generated on the electrode surface of the working electrode during the reaction and making the electrode surface of the working electrode clear;

[0012] A reference electrode assembly and an auxiliary electrode assembly are arranged opposite to each other on both sides of the flow cell body;

[0013] A liquid inlet and a liquid outlet are provided on opposite sides of the circulation cell body. The electrolyte is introduced through the liquid inlet, and the electrolyte after the electrochemical reaction is completed is discharged through the liquid outlet.

[0014] In a preferred embodiment of the present invention, the reference electrode assembly is connected to the reference electrode assembly mounting hole of the circulation cell body through a first tee.

[0015] In a preferred embodiment of the present invention, the reference electrode assembly includes a reference electrode, and the reference electrode is connected to the first tee via a matching first nut and a first sealing ring.

[0016] In a preferred embodiment of the present invention, the liquid inlet is provided on the first tee.

[0017] In a preferred embodiment of the present invention, the auxiliary electrode assembly is connected to the auxiliary electrode assembly mounting hole of the flow cell body through a second tee.

[0018] In a preferred embodiment of the present invention, the auxiliary electrode assembly includes an auxiliary electrode, and the auxiliary electrode is connected to the second tee via a matching second nut and a second sealing ring.

[0019] In a preferred embodiment of the present invention, the liquid outlet is provided on the second tee.

[0020] In a preferred embodiment of the present invention, the working electrode assembly includes a working electrode, and the working electrode is connected to the working electrode assembly mounting hole of the circulation cell body through a matching third nut and a third sealing ring.

[0021] The beneficial effects of the present invention are:

[0022] Through structural transformation, the defect of the existing in-situ Raman cell of the electrocatalytic system that cannot realize real-time monitoring of the electrochemical instantaneous reaction process and products is solved.

[0023] The existing in-situ Raman cell is improved to an in-situ Raman flow cell, so that the electrolyte always flows in the form of a liquid film, increasing the flow performance of the electrolyte in the flow cell and reducing the bubbles generated on the electrode surface, thereby enabling the monitoring of the electrocatalytic process and the detection of real-time reaction products.

[0024] The electrode head of the working electrode in the working electrode assembly abuts against the quartz window so that the electrolyte film flows between the electrode surface of the working electrode and the quartz window, thereby taking away the bubbles generated on the electrode surface of the working electrode during the reaction and making the electrode surface of the working electrode clear. The working electrode is placed directly below the window, so that the optical instrument can directly observe the surface of the working electrode from the upper window. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram (explosion diagram) of the present utility model.

[0026] Figure 2 This is a schematic diagram of the installation of the present utility model. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. However, it should be understood that the specific embodiments described herein are intended solely to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following descriptions to avoid unnecessary confusion regarding the concepts of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," and "top / bottom" and other terms indicating positions or locations are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific manner, and therefore should not be construed as limitations of this utility model. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] like Figure 1-2 The in-situ Raman flow cell of an electrocatalytic system shown includes a flow cell body 2 for electrochemical reaction, on which a quartz window 6 and a cover plate 1 are arranged.

[0030] The cover plate 1 and the quartz window 6 are fixed to the flow cell body 2 by screws 11 .

[0031] A buffer structure 7 is provided below the quartz window 6 , and a plurality of flow channels are provided through the buffer structure 7 . Specifically, the buffer structure 7 is a gasket, which is circular in shape with six circular holes around it and an elliptical flow channel in the middle.

[0032] In the flow cell body 2 , an upper cell body is formed between the space above the buffer structure 7 and below the quartz window 6 and the cover plate 1 , and a lower cell body is formed between the space below the buffer structure 7 and the bottom of the flow cell body 2 .

[0033] The electrode head of the working electrode 41 in the working electrode assembly 4 abuts against the quartz window 6, so that the electrolyte film flows between the electrode surface of the working electrode 41 and the quartz window 6, thereby taking away the bubbles generated on the electrode surface of the working electrode 41 during the reaction and making the electrode surface of the working electrode 41 clear.

[0034] The working electrode assembly 4 includes a working electrode 41 , which is connected to a working electrode assembly mounting hole (not shown) of the flow cell body 2 via a matching third nut 42 and a third sealing ring 43 .

[0035] In addition, a reference electrode assembly 3 and an auxiliary electrode assembly 5 are arranged on both sides of the circulation cell body 2, and a liquid inlet 35 and a liquid outlet 55 are arranged on both sides of the circulation cell body 2. The electrolyte is introduced through the liquid inlet 35, and the electrolyte after the electrochemical reaction is completed is discharged through the liquid outlet 55.

[0036] The reference electrode assembly 3 is connected to the reference electrode assembly mounting hole (not shown in the figure) of the circulation cell body 2 through the first tee 34 .

[0037] The reference electrode assembly 3 includes a reference electrode 31 , which is connected to a first tee 34 via a matching first nut 32 and a first sealing ring 33 . An electrolyte inlet 35 is provided on the first tee 34 .

[0038] The auxiliary electrode assembly 5 is connected to the auxiliary electrode assembly mounting hole (not shown in the figure) of the flow cell body 2 through the second three-way connection 54 .

[0039] The auxiliary electrode assembly 5 includes an auxiliary electrode 51 , which is connected to a second tee 54 via a second nut 52 and a second sealing ring 53 . An electrolyte outlet 55 is provided on the second tee 54 .

[0040] Because of the above structure, the working principle of the utility model is:

[0041] The solution to be tested enters the in-situ Raman flow cell of the electrocatalytic system through the tee of the reference electrode, then flows out through the tee outlet of the auxiliary electrode, and is measured by the working electrode inside the in-situ Raman flow cell of the electrocatalytic system.

[0042] The existing in-situ Raman cell is improved to an in-situ Raman flow cell, so that the electrolyte always flows in the form of a liquid film, increasing the flow performance of the electrolyte in the flow cell and reducing the bubbles generated on the electrode surface, thereby enabling the monitoring of the electrocatalytic process and the detection of real-time reaction products.

[0043] The design of the liquid inlet and outlet tee of the utility model reduces the number of openings in the lower cell body, and the use of thin gaskets ensures the circulation of electrolyte in the in-situ Raman cell, which can realize the monitoring of the electrocatalytic process and the detection of real-time reaction products.

[0044] The electrode head of the working electrode in the working electrode assembly abuts against the quartz window so that the electrolyte film flows between the electrode surface of the working electrode and the quartz window, thereby taking away the bubbles generated on the electrode surface of the working electrode during the reaction and making the electrode surface of the working electrode clear. The working electrode is placed directly below the window, so that the optical instrument can directly observe the surface of the working electrode from the upper window.

[0045] The reaction products are effectively concentrated and reflected on the working electrode to avoid reflection problems caused by bubbles, which is beneficial to the effective detection of trace electrochemical products.

[0046] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above.

[0047] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. An in-situ Raman flow cell for an electrocatalytic system, characterized in that: include: a flow cell body, on which a quartz window and a cover plate are arranged; A buffer structure is provided below the quartz window, and a plurality of flow channels are provided through the buffer structure; In the flow cell body, an upper cell body is formed between the space above the buffer structure and below the quartz window and the cover plate; A lower cell body is formed in the space between the bottom of the buffer structure and the bottom of the flow cell body; The electrode head of the working electrode in the working electrode assembly abuts against the quartz window, so that the electrolyte film flows between the electrode surface of the working electrode and the quartz window, thereby removing bubbles generated on the electrode surface of the working electrode during the reaction and making the electrode surface of the working electrode clear; A reference electrode assembly and an auxiliary electrode assembly are arranged opposite to each other on both sides of the flow cell body; A liquid inlet and a liquid outlet are provided on opposite sides of the circulation cell body. The electrolyte is introduced through the liquid inlet, and the electrolyte after the electrochemical reaction is completed is discharged through the liquid outlet.

2. The in-situ Raman flow cell of an electrocatalytic system according to claim 1, wherein: The reference electrode assembly is connected to the reference electrode assembly mounting hole of the circulation cell body through a first tee.

3. The in-situ Raman flow cell of an electrocatalytic system according to claim 2, wherein: The reference electrode assembly includes a reference electrode, and the reference electrode is connected to the first tee through a matching first nut and a first sealing ring.

4. The in-situ Raman flow cell of an electrocatalytic system according to claim 2, wherein: The liquid inlet is arranged on the first tee.

5. The in-situ Raman flow cell of an electrocatalytic system according to claim 1, wherein: The auxiliary electrode assembly is connected to the auxiliary electrode assembly mounting hole of the circulation cell body through a second tee.

6. The in-situ Raman flow cell of an electrocatalytic system according to claim 5, characterized in that: The auxiliary electrode assembly includes an auxiliary electrode, and the auxiliary electrode is connected to the second tee through a matched second nut and a second sealing ring.

7. The in-situ Raman flow cell of an electrocatalytic system according to claim 5, characterized in that: The liquid outlet is arranged on the second tee.

8. The in-situ Raman flow cell of an electrocatalytic system according to claim 1, wherein: The working electrode assembly includes a working electrode, and the working electrode is connected to the working electrode assembly mounting hole of the circulation cell body through a matching third nut and a third sealing ring.

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