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Nano Ag-AgCl solid non-polarized electrode and preparation method thereof

A technology of polarized electrodes and solids, applied in the field of nano-Ag-AgCl solid non-polarized electrodes and their preparation, can solve the problems of inability to guarantee the measurement accuracy, increase the polarization potential, and exceed eight hours, and achieve long-term stable measurement , the ideal polarization potential difference, the effect of reducing the offset of the current

Active Publication Date: 2020-04-10
JILIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Common electrodes mostly use copper rods and iron rods as electrode materials. Due to the high inertness of the metal itself, electrochemical reactions easily occur on the surface of the metal, which increases the polarization potential and is not suitable for high-precision measurement.
Although the liquid non-polarization electrode reduces the range, due to the leakage of the metal salt solution, it is necessary to dig an electrode pit when using it, which makes the electrode unsuitable for long-term measurement and causes some pollution to the environment.
Copper sulfate, the earliest widely used non-polarized electrode, has the problems of low stability and short service life.
Chinese patent CN204142965U discloses a silver / silver chloride liquid non-polarized electrode. The existence of the electrode column is to control the polarization potential difference in the ideal range, but the electrolyte penetrates too fast, the working time of the electrode is short, and the longest test time does not exceed eight hours
However, the shape and size of silver and silver chloride particles are not fixed, it is difficult to ensure uniform mixing during the grinding and mixing process, and there is also the possibility of particle agglomeration. The electrodes produced in this way have unstable polarization potentials and poor measurement accuracy. ensure

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  • Nano Ag-AgCl solid non-polarized electrode and preparation method thereof
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Embodiment Construction

[0044] In order to make the purpose, advantages, and design process of this invention clearer, the embodiments of this invention will be further explained in conjunction with the accompanying drawings.

[0045] The Ag / AgCl solid non-polarized electrode of the present invention comprises a non-polarized electrode column, an electrode column top cover 12 is installed on the top of the non-polarized electrode column, and a hydrogel layer 13 is provided on the side and the bottom surface, and the bottom hydrogel layer A permeable ceramic layer 14 is also provided below the 13, and an electrode outer protective shell 10 capable of wrapping the electrode column top cover 12 and the hydrogel layer 13 is also provided above the permeable ceramic layer 14;

[0046]The non-polarized electrode column includes a silver column 3, a 3-layer Ag and AgCl nano-mixed layer 6 and a 2-layer Ag electrode layer 7, and the 3-layer Ag and AgCl nano-mixed layer 6 and the 2-layer Ag electrode layer are ...

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Abstract

The invention relates to a nano Ag-AgCl solid non-polarized electrode and a preparation method thereof. The non-polarized electrode comprises a non-polarized electrode column, an electrode column topcover, a hydrogel layer, a permeable ceramic layer and an electrode outer protective shell; the non-polarized electrode column comprises a silver column, an Ag and AgCl nanometer mixing layer and an Ag electrode layer; and a silver wire connected with the silver column is led out from the Ag electrode layer. The novel electrode material nano Ag-AgCl is formed by adopting electrostatic spinning andthus the prepared solid non-polarized electrode has the advantages that the particle sizes of silver and silver chloride are nano-scale, so that the contact area is large, the conductive effect is improved, the current offset and the electrode internal resistance are reduced, so that the electrode can keep a stable polarization potential in different environments. After electrostatic spinning, agglomeration of particles is avoided, and the mixing states of a set of electrodes are consistent in the manufacturing process, that is, the internal structures are almost consistent, so that polarization of the electrodes is infinitely close, and the ideal polarization potential difference can be realized in a complex field environment.

Description

Technical field: [0001] The invention belongs to the technical field of geophysical electrical prospecting, and in particular relates to a nanometer Ag-AgCl solid non-polarized electrode and a preparation method thereof. Background technique [0002] As a sensor in the process of electrical prospecting, non-polarized electrodes are one of the key devices for measuring the earth's electric field signal. Only by controlling the range of a group of electrodes within an ideal range can the quality of the earth's electric field signal be guaranteed. Because the soil is an ion conductor, and the metal electrode is an electronic conductor, a new interface will be created when the two are in contact, and a polarization potential will be generated. The so-called non-polarized electrodes are a pair of electrodes that must have the same polarization potential in different field environments. So to do: 1. The structure of the two electrodes is completely synchronized, 2. The electrodes...

Claims

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Application Information

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IPC IPC(8): G01V3/08
CPCG01V3/082
Inventor 辛毅刘晨阳张紫淇朱龙鑫肖琦凡侯天远刘宏岩刘丽双李永超
Owner JILIN UNIV
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