All-solid-state integrated pH composite electrode device and preparation method of electrode

Abstract

The invention relates to an all-solid-state integrated pH composite electrode device and a preparation method of the electrode. The all-solid-state integrated pH composite electrode device comprises an Ag / AgCl reference electrode, an antimony electrode, a copper wire and an insulated rubber sleeve, wherein the antimony electrode is embedded at the bottom of a stainless steel hollow needle of the reference electrode through the insulated rubber sleeve; the reference electrode is formed by taking the stainless steel hollow needle as a substrate, electroplating a silver layer on the surface, performing ultrasonic cleaning by using deionized water, plating an AgCl layer on the surface, cleaning through deionized water, and finally coating the reference electrode by using perfluorinated sulfonic acid resin solution dissolved with supersaturated KCl; the antimony electrode is formed by oxidizing a common antimony electrode in molten sodium peroxide to form an oxidation layer film, coating the antimony electrode by using the perfluorinated sulfonic acid resin solution with the mass percent of 5-10 percent and forming a hydrogen ion selective semi-permeable membrane. The composite electrode has certain mechanical strength and piercing ability, and pH of solids, semi-solids, paste and solutions can be tested.

Description

technical field [0001] The present invention relates to the field of preparation of electrochemical sensors, and more specifically relates to an all-solid-state integrated pH composite electrode device and a method for preparing the electrodes thereof, which are used to realize the detection of solid, semi-solid, paste, and pH test of the solution. Background technique [0002] The traditional pH test system is composed of two separate reference electrodes and working electrodes, which is very inconvenient to use, and cannot realize the pH test of solid, semi-solid, and paste substances of a certain strength. Therefore, the all-solid-state reference electrode and the all-solid-body integrated pH composite electrode with certain puncture ability have become one of the research hotspots in recent years. [0003] The reference electrode is used as a reference electrode for measuring the potential difference. The common ones are hydrogen electrodes, calomel electrodes, and some...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the complex manufacturing process of the current all-solid-state reference electrode and the general response performance, the present invention proposes an all-solid-state integrated pH composite electrode device and a preparation method of the electrode, which is used for solids, semi-solids, pastes and Solution pH real-time test

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