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A silver/silver chloride electrode suitable for deep sea and preparation method thereof

A silver chloride electrode, silver chloride technology, applied in the direction of material electrochemical variables, etc., can solve problems such as stuck, mold invalidation, limit electrode production, etc., to achieve a simple preparation process, not easy to be polarized, and strong reliability Effect

Active Publication Date: 2016-08-24
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem with this method is that the silver wire is easily broken during pressing, stuck in the mold and cannot be taken out, making the mold useless, which greatly limits the production of electrodes

Method used

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  • A silver/silver chloride electrode suitable for deep sea and preparation method thereof
  • A silver/silver chloride electrode suitable for deep sea and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a. Prepare a 14cm-long viscose-based graphite fiber, fold it in half and follow figure 2 Arrangement shown is in mold, ready for use.

[0022] b. All subsequent processes will be operated in a dark room. According to the design life, weigh silver chloride and silver powder in a certain proportion, mix and grind them in an agate mortar until the color is uniform, then transfer the powder to a stirrer and stir it mechanically for 3 times , stirring for 1 min each time, with an interval of 3 min.

[0023] c. Transfer the mixed powder in step b to the mold, keeping the loose powder leads figure 2 state, apply a 2.5MPa force to the powder through a tablet press. When the pressure is stable, continue to apply it for 30s, then remove the pressure, and carefully take out the pressing piece with the lead wire in the mold.

[0024] d. Twist the copper wire and the lead wire together and fix them with conductive glue, cut out a PVC sleeve with a size of ￠4cm*3cm, and follow t...

Embodiment 2

[0027] a. Prepare a 14cm-long viscose-based graphite fiber, fold it in half and follow figure 2 Arrangement shown is in mold, ready for use.

[0028] b. All subsequent processes will be operated in a dark room. According to the size of the electrode required for the test, weigh silver powder and silver chloride particles in a certain proportion and put them into an agate mortar, mix and grind until the color is uniform, and then transfer the powder to the mixer. Stir mechanically 3 times, 1 min each time, with an interval of 3 min.

[0029] c. Then transfer the powder to the mold so that the lead wires of the loose powder remain figure 2 state, apply a 2.5MPa force to the powder through a tablet press. When the pressure is stable, continue to apply it for 30s, then remove the pressure, and carefully take out the pressing piece with the lead wire in the mold.

[0030] d. Twist the copper wire and the lead wire together and fix them with conductive glue, and cut out a PVC s...

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PUM

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Abstract

The invention belongs to the field of ocean electrochemical sensor materials and particularly relates to a silver / silver chloride electrode applicable to deep sea and the preparation method thereof. The electrode is columnar, embedded with part of conductive fiber and formed through pressing powder. According to the invention, one part of flexible graphite fiber is pressed into the interior of the electrode, an exposed leading wire part is externally connected with a conductive wire, and the difficult problems of poor surface welding performance and the like in an electrode material formed by pressing common powder can be solved. Moreover, the flexible graphite fiber is used for replacing silver and serving as a leading wire, so that the defects of high probability of breakage in pressing a silver wire for preparation and die blockage can be overcome. The sensor of the electrode prepared in the invention is good in stability and long in service life under a deep sea high pressure environment, and can meet the requirement of detecting the protective potential of the deep sea metal structures under the protecting effect of a cathode.

Description

technical field [0001] The invention belongs to the field of preparation of sea-related electrochemical sensor materials, in particular to a silver / silver chloride electrode suitable for deep sea and a preparation method thereof. Background technique [0002] At present, cathodic protection is the most common and feasible method for corrosion protection of deep-sea metal structures. For some important deep-sea facilities, such as platform jackets, port terminals, etc., it is necessary to monitor their potential conditions in real time under cathodic protection conditions to measure whether the protected objects are effectively protected. Therefore, it is very urgent to design a reference electrode with superior performance that can be used in deep sea high pressure environment. [0003] Subsequently, the silver / silver chloride tablet electrode was designed, which is not easy to be polarized, has reliable measurement data, has certain mechanical strength, and is wear-resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30C23F13/22
Inventor 张杰汪江伟段继周王秀通侯保荣陈守刚刘增文
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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