A solid non-polarized electrode resistant to deep-sea pressure and its preparation method

Abstract

The invention provides a method for preparing a solid non-polarized electrode resistant to deep sea pressure, comprising the following steps: adding AgNO 3 and ammonia water to prepare a silver-ammonia solution, then add NaCl solution into the silver-ammonia solution to obtain a silver chloride precipitate; wash the silver chloride precipitate and dry it to obtain an AgCl powder; mix the AgCl powder with Nano-silver powder and binder are mixed and sieved to obtain electrode powder; the sieved electrode powder is pressed and molded under a certain pressure, and carbon fibers woven into a grid shape are added to the electrode powder during the molding process , the formed green body is sintered in a gas atmosphere to obtain a solid non-polarized electrode. The preparation method of the invention is simple, and the solid non-polarized electrode prepared by the preparation method of the invention has high mechanical strength, can withstand deep sea pressure, has small range and stable performance, and can be used for detecting electric field signals in deep sea environments.

Description

Technical field[0001]The invention relates to the technical field of materials, in particular to a solid non-polarized electrode resistant to deep sea pressure and a preparation method thereof.Background technique[0002]Land resources are increasingly scarce, and the development and utilization of marine resources has become a research focus in various countries. The seabed contains abundant energy resources such as oil, natural gas, and combustible ice. How to accurately explore and effectively exploit these resources is the direction people have been working hard on. The ocean area occupies about 71% of the earth's surface, and the sea water area with a depth of more than 2000 meters accounts for about 89% of the total ocean area. Therefore, the detection equipment used must be resistant to deep sea pressure, and still maintain good use when working in the deep sea environment. performance.[0003]The solid non-polarized electrode is an important instrument used in ocean electric fie...

AI Technical Summary

Problems solved by technology

[0004] The existing solid non-polarized electrodes mainly use Ag / AgCl components, but different preparation methods lead to different environments and performances.

Patent CN102169103A discloses a solid-state Ag / AgCl electrode core, its preparation method and application. The electrode core replaces the silver chloride powder with silver powder covered with silver chloride on the surface to overcome the problem of short stable period of the existing electrode, but the electrode core It is baked at 100-125°C, and the preparation temperature is too low to make the electrode reach a sintered state. The pressure of deep seawater will destroy the structure of the electrode core and affect its performance; patent CN106291015A discloses a deep-sea long-life electric field The preparation method of the sensor and the inner electrode core body, the sintering temperature is 210 ° C, and the sintering temperature is low, which will also affect the deep sea pressure resistance of the electrode. In order to overcome this shortcoming, the electrode core is protected by a ceramic cylinder. In the deep sea area, the electrode core may still be damaged

The low sintering temperature of the electrode can also lead to its weak resistance to mechanical vibration. During operation, the electrode is easily damaged, causing fracture or cracks

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