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Photoelectric universal three-electrode electrolytic tank with controllable system temperature

An electrolytic cell, a general-purpose technology, applied in the direction of electrochemical variables of materials, material analysis by electromagnetic means, and measurement devices, etc., can solve the problems affecting the working electrode and the potential signal error of the working electrode, etc., and achieve simple equipment and current value. Precise, data-accurate effects

Pending Publication Date: 2019-04-05
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the three-electrode system, there will be a solution resistance between the reference electrode and the working electrode, resulting in an error in the potential signal of the working electrode. In addition, the reverse reaction in the counter electrode and the change of the solution temperature in the system will also affect the working electrode.

Method used

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  • Photoelectric universal three-electrode electrolytic tank with controllable system temperature
  • Photoelectric universal three-electrode electrolytic tank with controllable system temperature
  • Photoelectric universal three-electrode electrolytic tank with controllable system temperature

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Experimental program
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Effect test

Embodiment 1

[0038] Electrocatalytic reduction of CO 2 : Add 50 mg of mesoporous copper nanoparticles with a size of 200-300 nm into a mixed solution consisting of 2.5 ml of water, 2 ml of absolute ethanol and 0.5 ml of 5% nafion reagent by mass fraction, mix well and then sonicate for 30 min; mix the above The solution was drip-coated on a glassy carbon electrode with a diameter of 8 mm, and after natural air drying, a layer of transparent film was formed to modify the working electrode. The reference electrode uses Ag / AgCl electrode, the counter electrode uses 10×20mm platinum sheet electrode, and the electrolytic cell is 0.5mM KHCO 3 electrolyte. Open the air inlet and let in CO 2 The gas was removed for 30 minutes to remove the oxygen in the solution, and the gas flow continued to start the electrocatalytic reduction of CO 2 reaction.

[0039] Figure 5 It is an example: the solution temperature is 25°C, the electrochemical reaction condition is that the scanning potential is -0.4...

Embodiment 2

[0043] TiO 2 Nanotube array photoelectric production of hydrogen: using the photoelectrolytic cell of the three-electrode system of the present invention, the highly ordered TiO 2 Nanotube array film as photoanode, Pt nanoparticles modified TiO 2 The nanotube array is the cathode, the Ag / AgCl electrode is the reference electrode, and the electrolytic cell is 2M Na 2 CO 3 electrolyte. Open the light hole, set the distance between the light source and the working electrode, the parallel light is vertically irradiated on the surface of the photoanode through the light hole, and a certain external voltage is applied to photolyze water to produce hydrogen. In order to prevent the mixing of oxygen and hydrogen generated by the photoanode and photocathode, the two chambers are separated by an ion exchange membrane; under the control of the outer temperature control circulation system, the entire hydrogen production process of photoelectrolysis water is carried out at 25 °C.

[00...

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Abstract

The invention discloses a photoelectric universal three-electrode electrolytic tank with a controllable system temperature. The photoelectric universal three-electrode electrolytic tank comprises a working electrolytic tank and a pair electrolytic tank; the working electrolytic tank is connected with the pair electrolytic tank via a lock ring; the working electrolytic tank and a reference electrolytic tank are sintered into a whole via sintered glass; the working electrolytic tank and the pair electrolytic tank are arranged in an outer-layer temperature control circulating slot; the outer-layer temperature control circulating slot is provided with a constant temperature medium inlet and a constant temperature medium outlet; the working electrolytic tank and the reference electrolytic tankcomprise a working electrode and a reference electrode; the pair electrolytic tank comprises a pair electrode; the working electrolytic tank is provided with an air inlet and an air outlet separatelypositioned at the lower part and the upper part of the own side surface; the pair electrolytic tank is provided with an air inlet and an air outlet separated positioned at the lower part and the upperpart of the own side surface; and the working electrolytic tank is provided with a light hole. By using a liquid circulation mode, the electrolytic tank is connected with a constant temperature slotto control the reaction temperature of the electrolytic tank; the reference electrode and the working electrode are integrated via the sintered glass, the distance between the two electrodes is reduced, the part of solution resistance is eliminated, and the accuracy of level and current values during the surface electrochemical process of the working electrode is ensured; the electrolytic tank canbe used as the electrolytic tank and also can be used as the photoelectrolytic tank.

Description

technical field [0001] The invention relates to the field of electrochemical electrolytic cell devices, in particular to a photoelectric general-purpose three-electrode electrolytic cell with controllable system temperature. Background technique [0002] Electrochemistry is a branch of chemistry that studies the interaction between electrical and chemical interactions. By applying different potentials, different current conditions of the research object are observed; it is based on the composition and content of the electrolyte in the electrolytic cell, different electrode materials and electrolytic parameters and their electrolytic A class of analytical methods established based on the relationship between chemical properties. According to different applied signals, electrochemical analysis methods can be divided into cyclic voltammetry, linear voltammetry, AC impedance method, potentiometric method, and electrolytic method. However, no matter which type of electrochemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/28G01N27/30G01N27/333G01N27/416G01N27/48
CPCG01N27/28G01N27/305G01N27/333G01N27/416G01N27/48
Inventor 臧国龙罗军涛胡闯
Owner TIANJIN UNIV