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A kind of ag/agcl solid non-polarized electrode and preparation method thereof
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A polarized electrode and electrode technology, which is applied in the field of Ag/AgCl solid non-polarized electrode and its preparation, can solve the problems of inconvenient use, large environmental pollution, and short lifespan, and achieve easy portability, low environmental pollution, The effect of small range potential
Active Publication Date: 2021-03-19
CHINA UNIV OF GEOSCIENCES (WUHAN)
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[0003] However, among the above-mentioned electrodes, the iron electrode, copper electrode, and lead electrode are metal plates or metal rods directly made of metal. This kind of electrode itself has a large range and is unstable, and it is easy to change with the medium environment. The application method has limitations. The non-polarizable electrode in the related art has metal rod (wire) and " liquid " non-polarizable electrode and solid non-polarizable electrode that metal salt solution and porous ceramic tank constitute; Wherein " liquid " non-polarizable electrode It is necessary to change the configuration solution frequently, which is not convenient for long-term use in the field, and has great environmental pollution; the non-polarized solid lead electrode is commonly used in the non-polarized solid electrode, and this kind of electrode uses gypsum, metal salt, metal rod (wire) The potential of this electrode is unstable, the drift is serious, the life is not long, the volume is relatively large, and it is inconvenient to use in the field
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Embodiment 1
[0027] An embodiment of the present invention provides a method for preparing an Ag / AgCl solid non-polarized electrode, comprising the following steps:
[0028] 1) 100-130 parts by weight of 200-mesh amorphous silver powder, 440-580 parts by weight of silver chloride powder and 10-50 parts by weight of ethylene glycol are added to the grinding device successively, and the grinding time is 0.2h-0.5h, to obtain mixed raw material powder;
[0029] Preferably, the grinding time is 0.25h to 0.35h; if the grinding time is too short, the mixing of the raw materials will be insufficient, and if the grinding time is too long, the properties of some raw materials will change, resulting in a decrease in the stability of the electrode properties;
[0030] 2) Pour the above mixed raw material powder into the electrode mold, and press the mixed raw material powder in the electrode mold for 0.2 h to 0.5 h at normal temperature and a pressure of 10 MPa to 100 MPa; obtain a preliminary solid n...
Embodiment 2
[0038] An embodiment of the present invention provides a method for preparing an Ag / AgCl solid non-polarized electrode, comprising the following steps:
[0039] 1) 110 parts by weight of 200-mesh amorphous silver powder, 550 parts by weight of silver chloride powder and 40 parts by weight of ethylene glycol are added to the grinding device successively, and the grinding time is 0.2h~0.5h to obtain mixed raw material powder;
[0040] The rest are the same as in Example 1.
[0041] The Ag / AgCl solid non-polarized electrode prepared by the above method adopts amorphous silver powder and silver chloride powder as raw materials, and ethylene glycol as a binder to suppress and activate the electrode cylinder, wherein the silver chloride powder is used as a solid electrolyte to conduct electricity, The preparation process is simple and easy to operate; the range potential and range drift are small, the stability is good, the weight is light and the volume is small, no solution prepar...
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Abstract
The embodiment of the invention discloses an Ag / AgCl solid unpolarized electrode and a preparation method thereof. According to the Ag / AgCl solid unpolarized electrode, amorphous silver powders and silver chloride powders are used as raw materials, ethylene glycol is used as a binder to achieve suppress activation to obtain an electrode column. The silver chloride powders are used as a solid electrolyte to conduct electricity. The electrode is low in range potential, low in range drift, good in stability, light in weight, small in size, and easy to carry. The silver chloride solid electrolyte is not liable to lose and has slight pollution to environment. Hydrogel is used as an electrical signal transmission medium. According to an electrode contact environment, infiltrated ceramic or non-woven fabric can be used as an electrode contact medium.
Description
technical field [0001] The invention relates to the technical field of non-polarized electrodes, in particular to an Ag / AgCl solid non-polarized electrode and a preparation method thereof. Background technique [0002] Electrodes are widely used in regional grounding electrical exploration fields such as deep wells, boreholes, oceans, and ground surfaces, and are also used in teaching experiments and major seismic stations. In related technologies, the commonly used electrodes are mainly iron electrodes, copper electrodes, lead electrodes, copper sulfate electrodes, etc. Among them, iron electrodes and copper electrodes are often used in the measurement of strong signals in the active source method, and non-polarized electrodes (such as Non-polarized lead electrodes) are often used in passive source methods or high-precision electromagnetic measurements of weak signals. [0003] However, among the above-mentioned electrodes, iron electrodes, copper electrodes, and lead elec...
Claims
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