Non-polarized Geophysical Electrode Using Gel Electrolyte
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Solution Overview
Problem
Existing non-polarized geophysical electrodes face issues with environmental pollution, reduced useful life due to electrolyte depletion, effectiveness in cold weather, handling difficulties, and health hazards from toxic chemicals, as well as limited contact surface and messy storage requirements.
Innovation Solution
A non-polarized geophysical electrode with a plastic inverted funnel-shaped housing, a conductive metal disk, and a dry layer of conductive particles like graphene or graphite mixed with an adhesive, eliminating the need for chemical reaction compounds and providing a secure, pollution-free, and easy-to-use solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical reaction compound electrolyte (copper sulfate or lead chloride solution) is used in the electrode, then electrical conductivity is improved, but environmental pollution and health hazards occur due to leaching of toxic chemicals into the ground
Solution Approach 1:
The patent changes the physical state of the electrolyte from liquid to solid gel form. The gel electrolyte maintains ionic conductivity while preventing leaching into the ground, thus resolving the contradiction between electrical conductivity and environmental pollution
Solution Approach 2:
The patent uses a composite structure combining gel electrolyte with a porous ceramic or gypsum lower portion. This composite material provides both the electrical conductivity needed for measurement and the structural integrity to contain the electrolyte, preventing chemical leaching while maintaining functionality
2Reliability
If porous ceramic or gypsum is used as the lower cover plate or container, then electrolyte containment is improved, but electrolyte depletion occurs through leaching and evaporation reducing electrode useful life
Solution Approach 1:
The patent changes the electrolyte from liquid to gel form, fundamentally altering its physical properties. The gel electrolyte has much lower evaporation rates and maintains its volume stability, eliminating the depletion issues that limited electrode useful life while working with porous containment structures
3Reliability
If tubular porous portion of electrode housing is used, then electrolyte containment is improved, but contact surface area with ground is restricted
Solution Approach 1:
The patent transitions from a tubular porous structure to a planar porous plate or cup configuration. This dimensional change allows the electrolyte to contact the ground over a larger surface area while the porous structure maintains containment, resolving the contradiction between containment reliability and contact surface area
4Reliability
If liquid electrolyte is used in the electrode, then electrical conductivity is improved, but handling and transport become difficult due to leakage risks
Solution Approach 1:
The patent changes the electrolyte from liquid to gel form, fundamentally altering its physical state. The gel electrolyte maintains ionic conductivity for electrical measurements while having zero流动性 (fluidity), eliminating leakage risks during handling and transport while preserving electrical functionality
5Reliability
If chemical reaction compound electrolyte is used, then electrical conductivity is improved, but health hazards occur due to worker exposure to toxic chemicals during fabrication
Solution Approach 1:
The patent changes the electrolyte from liquid chemical solution to solid gel form using environmentally benign materials. This eliminates toxic chemical exposure for workers during fabrication while maintaining the electrical conductivity needed for geophysical measurements through ionic conduction in the gel matrix
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution offers a maintenance-free, safe, and effective geophysical measurement tool that operates across varying temperatures without environmental pollution, is easy to handle, and ensures secure contact with the ground, enhancing measurement accuracy and safety.
Implementation Method 1
an electrically conductive gel electrolyte layer
Implementation Method 2
a porous ceramic or gypsum lower plate or cup
Data Source
Figure 1
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AI summary
The non-polarized geophysical electrode (10) has an electrically conductive metal disk (17) mounted at its bottom opening (15). A mixture (23) of an adhesive such as epoxy, inorganic binder, or RTV silicone, and fine particles in micron or nano size of graphene, nanotube or graphite is applied on the outer bottom surface of the conductive metal disk (17). A lead wire (19) of the electrode is connected to the inner surface of the conductive metal disk (17) and extends outward through a liquid-tight strain relief (22) mounted at a cap (16) provided at the top of the housing (11) of the electrode.