Silver Electrode Silver Chloride Formation Test Strip
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Solution Overview
Problem
Existing methods for producing silver chloride electrodes in test strips for electrochemical analyte detection are costly, complex, and prone to manufacturing issues such as corrosion and instability, limiting their effectiveness and scalability.
Innovation Solution
A method involving applying a voltage between a silver electrode and a chloride-containing body fluid sample to form a silver chloride layer on the electrode surface, eliminating the need for expensive silver chloride inks or pastes and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If expensive silver chloride inks or pastes are used to produce silver chloride electrodes, then the electrode can be manufactured, but the manufacturing cost increases and the process becomes complex
Solution Approach 1:
The patent extracts the silver chloride formation step from the manufacturing process and relocates it to the in-use phase. Instead of applying silver chloride ink or paste during manufacturing, the electrode is left as pure silver and the silver chloride layer is formed in-situ when the test strip contacts the body fluid sample, thereby eliminating expensive materials and complex manufacturing steps
Solution Approach 2:
The patent prepares the electrode surface in advance by leaving it as pure silver metal during manufacturing, which then reacts with chloride ions from the body fluid sample to form the required silver chloride layer automatically during the testing process, eliminating the need for pre-application of silver chloride materials
2Reliability
If traditional silver chloride electrode production methods are used, then the electrode can be formed, but manufacturing issues such as corrosion and instability occur
Solution Approach 1:
The patent enables the electrode to self-form the silver chloride layer through its own reaction with chloride ions present in the body fluid sample. This self-service mechanism eliminates manufacturing defects and corrosion issues associated with traditional methods, as the silver chloride layer is formed under controlled physiological conditions rather than during complex manufacturing processes
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
This approach allows for the cost-effective and efficient generation of silver chloride layers during the testing process, improving the stability and scalability of electrochemical test elements while maintaining accurate analyte detection.
Implementation Method 1
applying a voltage between a silver electrode and a chloride-containing body fluid sample to form a silver chloride layer on the electrode surface
Data Source
AI summary
A method and test element for electrochemically detecting at least one analyte in a sample are provided, wherein the method comprises: a) providing at least one test element comprising at least one first electrode contacting a test chemistry and at least one second electrode, wherein a surface of the second electrode consists of silver metal; b) contacting both the first and second electrodes with the sample comprising chloride ions; c) applying a first voltage between the first electrode as a cathode and the second electrode as an anode with a voltage sufficient for forming a layer of silver chloride at the surface of the second electrode; d) applying a second voltage between the first electrode as the anode and the second electrode as the cathode; and e) determining an electrical signal between the first and the second electrodes, whereby the analyte in the sample comprising the chloride ions is detected.