Silver/ silver chloride powder electrode

Abstract

The invention relates to field of medical instruments and electrochemistry, particularly to a silver / silver chloride powder electrode. The silver / silver chloride powder electrode comprises a silver / silver chloride material, an insulating material, a silver wire, a welding point, a circular hole and a guide wire, wherein the silver wire is fixed on the silver / silver chloride material, the silver wire and the guide wire are welded together to form the welding point, and the circular hole is formed between an electrode material and the insulating material when the insulating material is used for filling. The invention also relates to preparation of the silver / silver chloride material. The silver / silver chloride powder electrode has the benefits: 1, the silver / silver chloride material can be processed into any shapes; 2, the electrode is not easy to polarize; 3, the property of the electrode is stable; and 4, the electrode adopts a porous structure, so that the surface properties of any electrode layers are the same.

Description

technical field [0001] The invention relates to a silver / silver chloride powder electrode, which is mainly used as a biosensor in the field of medical instruments and as a reference electrode in the field of electrochemistry. Background technique [0002] With the development of science and technology, EEG, ECG, ECG, ERPs (Event-Related Potentials) have developed rapidly. [0003] As sensors for collecting bioelectrical signals, there are tin electrodes and silver / silver chloride depleted polarized electrodes. [0004] The tin electrode material is soft, not hard enough; the melting point is low, and it is difficult to weld after breaking. [0005] When collecting bioelectrical signals, a weak current will pass through, which will cause the polarization of the electrodes. The classic silver / silver chloride depleted polarized electrode is based on a silver electrode coated with a layer of silver chloride. [0006] But there are also the following inconveniences: [0007] ...

AI Technical Summary

Problems solved by technology

[0007] 1. The coating is easy to fall off, and it needs to be re-plated after several times of use, which is time-consuming and laborious

[0008] 2. After the coating is worn, it is easy to make the electrode performance unstable

This method prepares silver / silver chloride powder, which is not conducive to the precipitation of silver / silver chloride particles

Ultrasonic pulverization is not used in the production process, and the obtained Ag / AgCl powder has relatively large particles

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