Spectral electrochemical analysis system for material detection

Abstract

The utility model relates to the field of material chemical analysis, and particularly discloses a spectrum electrochemical analysis system for material detection, which comprises an electrochemical workstation, the electrochemical workstation is connected with an electrochemical reaction tank and is used for measuring the current in the electrochemical reaction tank, and a light source is connected with the electrochemical reaction tank through an optical fiber I and is used for measuring the current in the electrochemical reaction tank. The electrochemical reaction tank is connected with the spectrograph through the second optical fiber, light emitted by the light source enters the electrochemical reaction tank after passing through the first optical fiber, and the second optical fiber guides the light into the spectrograph. In conclusion, the spectrum electrochemical workstation provides a powerful tool and support for electrochemical research and application through efficient spectrum electrochemical measurement, accurate light source and spectrum transmission, optimized transmittance bracket design, flexible cuvette bracket application, comprehensive electrochemical connection and integrated three-pole electrode design.

Description

Technical Field

[0001] The utility model relates to the technical field of material chemical analysis, in particular to a spectroelectrochemical analysis system for material detection. Background Art

[0002] In the field of material chemical analysis, spectral analysis and electrochemical analysis are very important means to study material properties. Spectral analysis techniques include transmittance, reflectance, absorbance and fluorescence measurement techniques, and electrochemical analysis includes cyclic voltammetry, chronoamperometry, square wave, differential pulse, etc. Spectral measurement techniques and electrochemical measurement techniques are already very mature technologies. However, for the study of certain materials, it is necessary to perform electrochemical testing and spectral analysis at the same time to obtain spectral parameters and electrochemical parameters at the same time.

[0003] The existing technical means is to test the electrochemical performance with electrochemical software while testing the spectral performance with spectral software. The two are not completely synchronized, resulting in large deviations in the measurement results. In view of the shortcomings of existing spectral and electrochemical tests, the present invention has developed a set of spectral electrochemical workstation measurement system, which uses the same set of software to control and measure the electrochemical workstation and spectrometer at the same time, ensuring that each step of the electrochemical reaction corresponds to a full spectrum measurement in real time, that is, the electrochemical test and the spectral test correspond one to one. The accuracy of the spectral electrochemical test is greatly improved. Utility Model Content

[0004] The utility model aims at solving the problems existing in the prior art and provides a spectroelectrochemical workstation.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A spectroelectrochemical analysis system for material detection comprises an electrochemical workstation, which is connected to an electrochemical reaction cell to measure the current in the electrochemical reaction cell; a light source is connected to the electrochemical reaction cell via an optical fiber 1, and the electrochemical reaction cell is connected to a spectrometer via an optical fiber 2; light emitted by the light source enters the electrochemical reaction cell via the optical fiber 1, and the optical fiber 2 guides the light into the spectrometer.

[0007] Furthermore, the electrochemical reaction cell is arranged on a transmittance bracket, the light source is connected to the input end of the transmittance bracket through optical fiber 1, the output end of the transmittance bracket is connected to the spectrometer through optical fiber 2, the light emitted by the light source enters the transmittance bracket through optical fiber 1, and is output from the transmittance bracket after passing through the electrochemical reaction cell arranged on the transmittance bracket, and the light output by the transmittance bracket is input into the spectrometer.

[0008] Furthermore, the transmittance bracket includes a frame body, and the frame body is provided with a collimating lens and an integrating sphere in sequence from top to bottom. The collimating lens is connected to the light source through optical fiber 1, and the integrating sphere is connected to the spectrometer through optical fiber 2.

[0009] Furthermore, the electrochemical reaction cell is arranged on a cuvette holder, the input end of the cuvette holder is connected to the light source via optical fiber 1, and the output end is connected to the spectrometer via optical fiber 2.

[0010] Furthermore, the cuvette holder is a four-way cuvette holder.

[0011] Furthermore, the spectroelectrochemical workstation is connected to the working electrode, reference electrode and auxiliary electrode of the electrochemical reaction cell.

[0012] Furthermore, the electrochemical reaction cell comprises a cell body and a tripole electrode arranged in the cell body, and the tripole electrode is connected to a working electrode, a reference electrode, and an auxiliary electrode of the electrochemical reaction cell.

[0013] Beneficial effects of the utility model:

[0014] Efficient spectroelectrochemical measurement: The workstation combines the electrochemical workstation with the spectrometer through optical fiber and a specific bracket structure, such as a transmittance bracket or a cuvette bracket, to achieve synchronous measurement of the current and spectrum in the electrochemical reaction cell, thereby enabling a more comprehensive analysis and understanding of the mechanism and process of the electrochemical reaction.

[0015] Accurate light source and spectrum transmission: Through optical fiber 1 and optical fiber 2, the light emitted by the light source can be accurately transmitted to the electrochemical reaction cell, and then the spectrum after the reaction is transmitted to the spectrometer for analysis. This design ensures the transmission efficiency and stability of light and improves the accuracy of measurement.

[0016] Optimized transmittance bracket design: The transmittance bracket further improves the light transmission efficiency and the accuracy of spectral measurement through the use of collimating lenses and integrating spheres. The collimating lens can ensure that the light enters the electrochemical reaction cell in the form of parallel light, while the integrating sphere can collect light from all directions emitted from the reaction cell, improving the integrity of the spectral data.

[0017] Flexible cuvette holder application: The design of the cuvette holder (especially the four-way cuvette holder) enables the workstation to be applicable to electrochemical reaction cells of different sizes and shapes, increasing its flexibility and scope of application.

[0018] Comprehensive electrochemical connections: The connection between the electrochemical workstation and the working electrode, reference electrode, and auxiliary electrode of the electrochemical reaction cell ensures the comprehensiveness and accuracy of electrochemical measurements, making the workstation suitable for a variety of complex electrochemical studies.

[0019] Integrated three-electrode electrode design: The three-electrode electrode design (working electrode, reference electrode, auxiliary electrode) in the electrochemical reaction cell enables the workstation to measure and record multiple electrochemical parameters simultaneously, further improving its functionality and performance.

[0020] In summary, this spectroelectrochemical workstation design provides powerful tools and support for electrochemical research and applications through its efficient spectroelectrochemical measurement, precise light source and spectral transmission, optimized transmittance holder design, flexible cuvette holder application, comprehensive electrochemical connections, and integrated tripole electrode design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the spectroelectrochemical analysis system for material detection of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the transmittance bracket of the utility model;

[0023] Figure 3 The schematic diagram of the structure of the reaction pool of the utility model is

[0024] Figure 4 This is a schematic diagram of the structure of Example 2 of the spectroelectrochemical analysis system for material detection of the utility model.

[0025] In the figure: 1-electrochemical workstation, 2-electrochemical reaction cell, 21-cell body, 22-tripole electrode, 3-light source, 4-optical fiber 1, 5-optical fiber 2, 6-transmittance bracket, 61-frame, 62-collimating lens, 63-integrating sphere, 7-cuvette bracket. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Example 1

[0030] Please refer to Figure 1 , a spectroelectrochemical analysis system for material detection provided by the utility model includes an electrochemical workstation 1, the electrochemical workstation 1 is connected to an electrochemical reaction cell 2, and the current in the electrochemical reaction cell 2 is measured. The light source 3 is connected to the electrochemical reaction cell 2 through an optical fiber 1 4, and the electrochemical reaction cell 2 is connected to the spectroelectrochemical workstation 1 through an optical fiber 2 5. The light emitted by the light source 3 enters the electrochemical reaction cell 2 after passing through the optical fiber 1 4, and the optical fiber 2 5 guides the light passing through the electrochemical reaction cell 2 into the spectroelectrochemical workstation 1. When working, the spectroelectrochemical workstation 1 is used to detect the current in the electrochemical reaction cell 2 and analyze the full spectrum. The transmittance, reflectivity and absorbance of the material can be calculated through the reference spectrum, dark spectrum and sample spectrum.

[0031] Among them, the spectroelectrochemical workstation 1 is the core control component of this workstation, which is responsible for providing stable electrochemical signals and controlling the electrochemical reaction process in the electrochemical reaction cell 2. In addition, it also has a spectral analysis function. The spectroelectrochemical workstation 1 adopts advanced digital control technology and has the characteristics of high precision, high stability, and high reliability. The working electrode, reference electrode, and auxiliary electrode of the electrochemical workstation 1 are connected to the corresponding electrodes in the electrochemical reaction cell 2 through wires to realize the transmission and control of electrochemical signals.

[0032] Please refer to Figure 1 and Figure 3 The electrochemical reaction cell 2 is the place where the workstation performs electrochemical reactions, and includes a cell body 21 and a three-pole electrode disposed in the cell body 21, wherein the three-pole electrode is a working electrode, a reference electrode, and an auxiliary electrode. The working electrode is used to perform electrochemical reactions, the reference electrode is used to provide a stable potential reference, and the auxiliary electrode is used to assist the working electrode in completing the electrochemical reaction. The design of the electrochemical reaction cell 2 fully considers factors such as heat dissipation, solution flow, and electrode protection during the reaction process, to ensure that the electrochemical reaction can be performed stably and efficiently.

[0033] In this embodiment, the electrochemical reaction cell 2 can select different types of reaction cells according to experimental needs, such as a single-chamber reaction cell, a double-chamber reaction cell, etc. At the same time, in order to meet the needs of spectral measurement, the electrochemical reaction cell 2 is made of high-transmittance materials and is designed with an interface suitable for optical fiber connection.

[0034] The light source 3 is used to provide a stable and continuous light signal to excite the substance in the electrochemical reaction cell 2 and generate a spectral signal. The light source 3 can select different types of light sources, such as a deuterium lamp, a halogen tungsten lamp, etc., and select a suitable light source type and wavelength range according to the experimental needs. The light signal emitted by the light source 3 is transmitted to the electrochemical reaction cell 2 through the optical fiber 4. The optical fiber 4 has the characteristics of high transmittance and low loss, which can ensure the efficient transmission of the light signal.

[0035] The spectral signal generated in the electrochemical reaction cell 2 is transmitted to the spectroelectrochemical workstation 1 for analysis via the optical fiber 25. The optical fiber 25 also has the characteristics of high transmittance and low loss, which can ensure the efficient transmission of the spectral signal. The spectroelectrochemical workstation 1 adopts advanced spectroscopic technology and signal processing technology, which can accurately measure the wavelength, intensity and other parameters of the spectral signal, and then analyze the type, concentration and other information of the substance in the electrochemical reaction process.

[0036] In this embodiment, in order to improve the accuracy and stability of spectrum measurement, a transmittance bracket 6 is introduced. The transmittance bracket 6 reduces the loss and interference of the optical signal during the transmission process by optimizing the optical path design, thereby improving the accuracy of spectrum measurement.

[0037] Specifically, the electrochemical reaction cell 2 is arranged on the transmittance bracket 6, the light source 3 is connected to the input end of the transmittance bracket 6 through the optical fiber 1 4, and the output end of the transmittance bracket 6 is connected to the spectroelectrochemical workstation 1 through the optical fiber 2 5. The light emitted by the light source 3 enters the transmittance bracket 6 through the optical fiber 1 4, and is output from the transmittance bracket 6 after passing through the electrochemical reaction cell 2 arranged on the transmittance bracket 6. The light output by the transmittance bracket 6 is input into the spectroelectrochemical workstation 1.

[0038] Please refer to Figure 2 The transmittance bracket 6 is mainly composed of a frame 61, a collimating lens 62, an integrating sphere 63 and other components. The frame 61 is used to support and fix other components to ensure the stability and reliability of the entire bracket. The frame 61 is provided with a collimating lens 62 and an integrating sphere 63 from top to bottom. The collimating lens 62 is connected to the light source 3 through an optical fiber 1 4, and the integrating sphere 63 is connected to the spectroelectrochemical workstation 1 through an optical fiber 2 5. The collimating lens 62 is used to collimate the light signal emitted by the light source 3 so that it enters the electrochemical reaction cell 2 in the form of parallel light. The integrating sphere 63 is used to collect the spectral signal generated by the electrochemical reaction cell 2, and import it into the optical fiber 2 5 to transmit it to the spectroelectrochemical workstation 1.

[0039] The main function of the transmittance bracket 6 is to optimize the optical path design and improve the accuracy and stability of spectral measurement. Specifically, the introduction of the collimating lens 62 allows the optical signal emitted by the light source 3 to enter the electrochemical reaction cell 2 in the form of parallel light, reducing the scattering and loss of the optical signal during transmission. The integrating sphere 63 can evenly collect the spectral signal generated by the electrochemical reaction cell 2, and guide it into the optical fiber 25 to transmit it to the spectroelectrochemical workstation 1, further improving the accuracy of spectral measurement.

[0040] Example 2

[0041] Please refer to Figure 4 In some experiments, in order to facilitate the replacement and cleaning of the electrochemical reaction cell 2, a cuvette holder 7 is introduced. The input end of the cuvette holder 7 is connected to the light source 3 through the optical fiber 1 4, and the output end is connected to the spectroelectrochemical workstation 1 through the optical fiber 2 5. The cuvette holder 7 adopts a four-way structure, and four cuvettes can be installed at the same time to realize the parallel operation of multiple groups of experiments.

[0042] Working principle:

[0043] The three electrodes of the spectroelectrochemical workstation 1 are respectively connected to the working electrode, reference electrode and auxiliary electrode of the electrochemical reaction cell. The working electrode and the reference electrode apply voltage, and the working electrode and the auxiliary electrode measure the current. The software can apply voltage and measure current in different ways, such as cyclic voltammetry, chronoamperometry, etc. While applying voltage, the light emitted by the light source 3 passes through the electrochemical reaction cell 2 and the working electrode through the optical fiber 1 4, and the optical fiber 2 5 receives and enters the spectroelectrochemical workstation 1. The spectroelectrochemical workstation 1 can measure the current and can measure the full spectrum in real time. The transmittance, reflectivity and absorbance can be calculated through the reference spectrum, dark spectrum and sample spectrum. In this way, a full spectrum data can be obtained at each applied voltage. Thereby realizing the combination of spectroscopy and electrochemistry, and obtaining electrochemical measurement data and spectral measurement data at the same time.

[0044] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A spectroelectrochemical analysis system for material detection, characterized in that: The invention comprises a spectroelectrochemical workstation (1), wherein the spectroelectrochemical workstation (1) is connected to an electrochemical reaction cell (2) to measure the current in the electrochemical reaction cell (2); a light source (3) is connected to the electrochemical reaction cell (2) via an optical fiber 1 (4); the electrochemical reaction cell (2) is connected to the spectroelectrochemical workstation (1) via an optical fiber 2 (5); light emitted by the light source (3) enters the electrochemical reaction cell (2) via the optical fiber 1 (4); and the optical fiber 2 (5) guides the light into the spectroelectrochemical workstation (1).

2. The spectroelectrochemical analysis system for material detection according to claim 1, characterized in that: The electrochemical reaction cell (2) is arranged on a transmittance bracket (6); the light source (3) is connected to the input end of the transmittance bracket (6) via an optical fiber 1 (4); the output end of the transmittance bracket (6) is connected to the spectroelectrochemical workstation (1) via an optical fiber 2 (5); the light emitted by the light source (3) enters the transmittance bracket (6) via the optical fiber 1 (4), passes through the electrochemical reaction cell (2) arranged on the transmittance bracket (6), and is output from the transmittance bracket (6); the light output by the transmittance bracket (6) is input into the spectroelectrochemical workstation (1).

3. The spectroelectrochemical analysis system for material detection according to claim 2, characterized in that: The transmittance support (6) comprises a frame (61), and the frame (61) is provided with a collimating lens (62) and an integrating sphere (63) in sequence from top to bottom. The collimating lens (62) is connected to the light source (3) via an optical fiber 1 (4), and the integrating sphere (63) is connected to the spectroelectrochemical workstation (1) via an optical fiber 2 (5).

4. The spectroelectrochemical analysis system for material detection according to claim 1, characterized in that: The electrochemical reaction cell (2) is arranged on a cuvette holder (7); the input end of the cuvette holder (7) is connected to a light source (3) via an optical fiber 1 (4), and the output end is connected to a spectroelectrochemical workstation (1) via an optical fiber 2 (5).

5. The spectroelectrochemical analysis system for material detection according to claim 4, characterized in that: The cuvette holder (7) is a four-way cuvette holder.

6. The spectroelectrochemical analysis system for material detection according to claim 1, characterized in that: The spectroelectrochemical workstation (1) is connected to a working electrode, a reference electrode and an auxiliary electrode of an electrochemical reaction cell (2).

7. The spectroelectrochemical analysis system for material detection according to claim 6, characterized in that: The electrochemical reaction cell (2) comprises a cell body (21) and a three-pole electrode (22) arranged in the cell body (21); the three-pole electrode (22) is connected to a working electrode, a reference electrode, and an auxiliary electrode of the electrochemical reaction cell (2).

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