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Method for producing complex type microelectrode

A micro-electrode and composite technology, applied in the direction of material electrochemical variables, etc., can solve the problems of unstable potential of silver wire as reference electrode, dispersion of three electrodes, difficult operation, etc., and achieve stable on-site reference potential. The method is simple and effective , easy-to-use effects

Inactive Publication Date: 2003-12-24
袁倬斌 +1
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Problems solved by technology

[0003] In order to overcome the problems that the existing silver / silver chloride reference electrode cannot be used for cell living, in situ, online electrochemical research, the potential instability of the direct use of silver wire as the reference electrode, and the dispersion, damage and difficulty of the existing three electrodes Insufficient, the present invention proposes a kind of method of miniaturized silver / silver chloride electrode, and this method not only volume is small, can be inserted in the cell, and can provide stable reference potential, and, three kinds of microelectrodes adopt glass capillary as insulator and support body, assembled in a thin metal tube with a millimeter inner diameter, welded together with a standard small plug, providing a simple, easy-to-use and non-destructive composite microelectrode

Method used

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  • Method for producing complex type microelectrode
  • Method for producing complex type microelectrode

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Embodiment Construction

[0011] 1. Assembly of carbon fiber micro working electrode (1):

[0012] The carbon fiber is insulated and supported by a glass capillary, and the connection between the carbon fiber and the copper wire is realized through secondary copper plating. The two ends of the glass capillary are melted and sealed with solid paraffin:

[0013] 2. Assembly of silver / silver chloride (Ag / AgCl) miniature reference electrode (3):

[0014] Insert the electrochemically treated silver / silver chloride filament into the drawn glass capillary of a specific shape, and use the capillary phenomenon of the glass capillary to seal a section of potassium chloride saturated with silver chloride in the capillary. solution, can provide a stable reference potential, and the measuring tip is as fine as micron;

[0015] 3. Assembly of platinum (Pt) miniature counter electrode (2):

[0016] The fine platinum wire is insulated and supported by a glass capillary, and the two ends of the glass capillary are me...

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Abstract

A process for preparing a combined miniature electrode used for cell measurement features that the capillary glass tubes are used to load the micron-class Ag wire, Pt wire and carbon fibre in a fine metallic tube by insulating enclosure. The capillary glass tube for carbon fibre or Pt wire is enclosed by fused paraffin wax. The capillary glass tube contains the saturated potassium chloride solution of silver chloride to become an enclosed reference electrode.

Description

Technical field [0001] The invention relates to a preparation method of a composite microelectrode for electrochemical testing and research, and provides a new preparation method for a three-in-one composite microelectrode capable of providing a stable reference voltage. Background technique [0002] At present, the known silver / silver chloride (Ag / AgCl) reference electrode is formed by placing silver / silver chloride in a glass tube with a ceramic core. Due to the method, the conventional silver / silver chloride electrode volume Relatively large, it is difficult to miniaturize, and in the current in vivo, in situ, and online research on cells, the conventional silver / silver chloride electrode cannot meet the requirements of providing a stable potential in cell measurement due to its large size, and the silver electrode is directly used As a reference electrode, it has the disadvantage of unstable potential, so that it cannot be accurately measured by conventional electrochemi...

Claims

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Application Information

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IPC IPC(8): G01N27/27G01N27/30
Inventor 袁倬斌张君
Owner 袁倬斌
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