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Silver/silver chloride reference electrode and manufacturing method of reference electrode

A reference electrode and silver chloride technology, applied in the direction of material electrochemical variables, can solve the problems of reducing the stability and reproducibility of the reference electrode, the easy oxidation of the silver electrode, and the volatilization loss of silver chloride, etc., to achieve Cheap raw materials, good airtightness, and easy storage

Active Publication Date: 2015-01-21
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the high temperature system, the silver electrode is easily oxidized, and the silver chloride has a certain volatilization loss, which will greatly reduce the stability and reproducibility of the reference electrode.

Method used

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  • Silver/silver chloride reference electrode and manufacturing method of reference electrode
  • Silver/silver chloride reference electrode and manufacturing method of reference electrode
  • Silver/silver chloride reference electrode and manufacturing method of reference electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 The making of reference electrode of the present invention

[0049] (1) Accurately weigh 10 grams of lithium chloride, potassium chloride, and silver chloride with a substance ratio of 59:41:5, dry under reduced pressure at 300°C for 3 hours, grind until the particle size reaches 200 mesh and mix Uniform, standby as reference salt 3 for making reference electrode;

[0050] (2) getting a diameter of 1 mm and a length of 4 cm cylindrical A section 5 (in the present embodiment, the material of the A section is silver, and a shape of silk), a diameter of 1 mm and a length of 1 cm cylindrical B section 6 (the present embodiment The material of the middle B section is nickel, and the shape is filamentous), the diameter is 1mm and the length is 1cm cylindrical C section 7 (the material of the C section in this embodiment is tungsten, and the shape is filamentous) and the diameter is 1mm and the length is 4cm Cylindrical D section 8 (in the present embodiment, the...

Embodiment 2

[0056] Embodiment 2 The making of reference electrode of the present invention

[0057] (1) Accurately weigh 10 grams of lithium chloride, barium chloride, and silver chloride with a substance ratio of 67:28:5, dry under reduced pressure at 300°C for 3 hours, grind until the particle size reaches 200 mesh and mix Uniform, standby as reference salt 3 for making reference electrode;

[0058] (2) get the cylindrical stainless steel wire 6 that the length of 1 mm in diameter is 4 cm (the material of segment A is silver in the present embodiment, and the shape is silk), the length of 1 mm in diameter is 1 cm, and the length of 1 mm is 1 mm in diameter. The cylindrical C section 7 that length is 1cm (in the present embodiment, the material of C section is molybdenum, and the shape is filiform) and diameter is that 1mm length is each one section of cylindrical stainless steel wire 8 of 4cm, according to such as figure 2 In the sequence shown, the four sections of metal wire are fab...

Embodiment 3

[0064] Embodiment 3 The making of reference electrode of the present invention

[0065] (1) Accurately weigh 10 grams of sodium chloride, magnesium chloride, and silver chloride with a substance ratio of 57:38:5, dry under reduced pressure at 300°C for 3 hours, grind until the particle size reaches 200 mesh and mix evenly, Standby as the reference salt 3 for making the reference electrode;

[0066] (2) getting a diameter of 1 mm and a length of 4 cm cylindrical A section 5 (in the present embodiment, the material of the A section is silver, and a shape of silk), a diameter of 1 mm and a length of 1 cm cylindrical B section 6 (the present embodiment The material of the middle B section is nickel, and the shape is filamentous), the diameter is 1mm and the length is 1cm cylindrical C section 7 (the material of the C section in this embodiment is tungsten, and the shape is filamentous) and the diameter is 1mm and the length is 4cm Cylindrical D section 8 (in the present embodimen...

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Abstract

The invention discloses a silver / silver chloride reference electrode and a manufacturing method of the reference electrode. The silver / silver chloride reference electrode comprises an electrode sleeve, a composite metal wire electrode (2) and reference salt (3), wherein the electrode sleeve comprises an electrode shell and a salt bridge (4) which are connected together; the material of the salt bridge (4) is borosilicate glass; the silver / silver chloride reference electrode is fully sealed; the composite metal wire electrode (2) comprises a section A, a section B, a section C and a section D which are sequentially connected with one another. The manufacturing method of the silver / silver chloride reference electrode comprises the steps of filling salt and sealing. The reference electrode is simple to manufacture, low in cost, high in reproducibility, high in stability, high in reversibility, fast in response to signal, easy to store, free of pollution to research system and in particular suitable for industrial production. The reference electrode is suitable for researching electrochemical properties of a chloride mixed fuse salt system at the temperature of 350-650 DEG C.

Description

technical field [0001] The invention specifically relates to a silver / silver chloride reference electrode and a manufacturing method thereof. Background technique [0002] High-temperature molten salt systems are an important field in both electrochemical research and industrial production. In the chloride mixed molten salt system, such as LiCl-KCl, LiCl-NaCl, LiCl-CaCl 2 and NaCl-MgCl 2 In such systems, the research on their electrochemical properties has attracted more and more attention. In the study of electrochemical properties, especially in the measurement of various electrochemical parameters, the three-electrode system is favored because of its convenient operation and high reliability of the obtained data. In these three-electrode systems, due to the high temperature and strong volatility of the high-temperature molten salt system, there is currently no general reference electrode. The main reference electrodes used are gas reference electrodes, metal reference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 朱铁建郑海洋张国欣黄卫龙德武李晴暖
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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