Solid non-polarized electrode resistant to deep sea pressure and preparation method thereof

Abstract

The invention provides a preparation method of a solid non-polarized electrode resistant to a deep sea pressure. The preparation method of the solid non-polarized electrode resistant to the deep sea pressure comprises the following steps: preparing a silver ammonia solution by using AgNO<3> and ammonia water, and adding a NaCl solution to the silver ammonia solution to obtain a silver chloride precipitate; washing the silver chloride precipitate clean to obtain a AgCl powder after drying; mixing the AgCl powder with a nano silver powder and a binder and screening to obtain an electrode powder;and pressing the screened electrode powder under a certain pressure for molding; and in the molding process, carbon fibers woven into a grid shape are added to the electrode powder, and the molded green body is sintered under a gas atmosphere, so that the solid non-polarized electrode is obtained. The preparation method provided by the invention is simple; and the solid non-polarized electrode prepared by the preparation method provided by the invention has high mechanical strength, can withstand deep sea pressure, and has small electrode difference and stable performance, which can be used for detecting electric field signals in deep sea environment.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a deep-sea pressure-resistant solid non-polarized electrode 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 hotspot in various countries. The seabed is rich in energy resources such as oil, natural gas and combustible ice. How to accurately explore and effectively exploit these resources is the direction that people have been working hard. The ocean area accounts for about 71% of the earth's surface, and the seawater area with a depth of more than 2000 meters accounts for about 89% of the total ocean area. Therefore, it is required that the detection equipment used must be resistant to deep-sea pressure and still maintain good use when working in a deep-sea environment. performance. [0003] The solid non-polarized electrode is an important ins...

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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