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Preparation method of double layer electrochemical working electrode with shielding outer layer

A working electrode and electrochemical technology, applied in the field of preparation of double-layer electrochemical working electrodes, can solve problems such as inability to meet the development requirements of electrochemical experiments, inconvenient experimental operation, etc., and achieve wide practical value and application prospects, good stability, The effect of strong electromagnetic shielding performance

Inactive Publication Date: 2008-08-13
佛山中科先创电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the Faraday box has a good shielding effect, it can no longer meet the development requirements of electrochemical experiments, and it will also bring inconvenience to the experimental operation when connecting the electrochemical reaction device and then using it with the Faraday box. ]

Method used

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  • Preparation method of double layer electrochemical working electrode with shielding outer layer
  • Preparation method of double layer electrochemical working electrode with shielding outer layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] according to figure 1 As shown, firstly, the silicone oil release agent is applied to the electrode round hole 2, and the mold body 1 is tightly connected by the screw 3, and the mold body 1 and the bottom frame 4 are tightly connected by the screw 6, and the conductive material 7 embedded in the electrode base material 7 is tightly connected. The copper metal rod 9 is placed in the polished electrode hole 2 on the mold, and the bottom end of the electrode base material is placed in the positioning hole 5 on the chassis 4, so that the metal rod 9 is always in the casting process. Concentric with the outer edge of the electrode base material 7, cast, and complete the inner layer packaging; then place the electrode inner layer in the polished electrode hole 2 on the mold, and place the bottom end of the electrode inner layer base material on the chassis 4 In the positioning hole 5, the electrode inner layer material is always concentric with the outer edge of the electrod...

Embodiment 2

[0019] The mold was fixed as in Example 1.

[0020] Preparation of inner layer:

[0021] When encapsulating, use diaminophenyl ether ketone as a crosslinking agent to cure epoxy resin as an electrode packaging material to prepare a working electrode; the molar ratio of crosslinking agent diaminophenyl ether ketone to epoxy resin is 1:10, and the molecular weight of epoxy resin is 300-1500; first place a certain amount of epoxy resin and the mold in a constant temperature environment of 90°C, add the cross-linking agent to the epoxy resin, and stir well. After mixing evenly, cast it into the preset constant temperature mold electrode In the round hole, heat up to 40°C for 1.5 hours to make the reaction moderate and uniform, and release the air bubbles that may be trapped during the reaction process. Since the mixture is mixed under heating, the mixture has low viscosity and is not easy to produce air bubbles. Constant temperature Curing at 90°C for 10 hours to complete the cur...

Embodiment 3

[0026] The mold was fixed as in Example 1.

[0027] Preparation of inner layer:

[0028] When encapsulating, use diaminophenyl ether ketone as a crosslinking agent to cure epoxy resin as an electrode packaging material to prepare a working electrode; the molar ratio of crosslinking agent diaminophenyl ether ketone to epoxy resin is 1:15, and the molecular weight of epoxy resin is 300-1500; first place a certain amount of epoxy resin and the mold in a constant temperature environment of 100°C, add the cross-linking agent to the epoxy resin, and stir thoroughly. After mixing evenly, cast it into the preset constant temperature mold electrode In the round hole, heat up to 60°C for 1 hour to make the reaction moderate and uniform, and release the air bubbles that may be trapped during the reaction process. Since the mixture is mixed under heating, the viscosity of the mixture is low and it is not easy to generate air bubbles. Constant temperature 100 Cure for 15 hours at ℃ to com...

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Abstract

The present invention provides a preparation method of double electrochemistry working electrode structure with shielding crust. Epoxy on outside is used as substrate based on the inner layer as preparation working electrode, and carbon nano-tube is used as conductive filler to process a choiceness Hertzian waves shielding layer. The said working electrode has special structure, dielectric property and strong electromagnetic shielding effectiveness, at the same time, has merits of light quality, adjustable conductivity, strong high temperature oxidation resistance and good stability. In addition, the said working electrode is a working electrode with electromagnetic shielding technique, which is convenient for operation of electrochemistry test and is a promising electromagnetic shielding technique, and has widely use value and application prospect in electrochemistry field.

Description

technical field [0001] The invention belongs to a preparation method of a double-layer electrochemical working electrode with a shielding outer layer. Background technique [0002] With the rapid development of science and technology, the requirements for electromagnetic shielding technology in the field of electrochemistry are also increasing. Early electromagnetic shielding technologies mainly used metals and their composite materials. Although such materials have good shielding effectiveness, they are highly elastic, easy to corrode and expensive, and it is difficult to adjust the shielding effect. In traditional electrochemical experiments, in order to suppress the influence of noise in the measurement, a Faraday box is usually used for low current measurement and measurement under ambient noise. Although the Faraday box has a good shielding effect, it can no longer meet the development requirements of electrochemical experiments, and it will also bring inconvenience to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 牛莉张齐贤王晓丹王伟
Owner 佛山中科先创电子科技有限公司
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