Ruthenium-Iridium Electrode for Stable pH Sensing
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Solution Overview
Problem
Conventional glass electrodes used in pH sensors are fragile, costly to manufacture, and require special storage and handling, limiting their practicality and durability for pH detection in various applications.
Innovation Solution
A water pH detection sensor utilizing a ruthenium-iridium electrode, prepared through thermal decomposition of a ruthenium oxide-iridium oxide titanium-based material, in combination with a reference electrode, such as Ag/AgCl or tin-plated, to measure pH values based on voltage differences, offering a stable and cost-effective solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass electrodes are used as measurement electrodes, then measurement performance is good and technology is mature, but the material is fragile and manufacturing process requirements are high
Solution Approach 1:
The patent changes the material parameter from traditional glass to ruthenium-iridium alloy, fundamentally altering the physical and chemical properties of the electrode. This material substitution maintains pH sensing capability while eliminating fragility issues, achieving both reliable measurement and mechanical durability
Solution Approach 2:
The patent employs a composite ruthenium-iridium alloy material that combines the advantages of both metals: ruthenium provides catalytic activity and corrosion resistance, while iridium enhances mechanical strength and stability. This composite approach resolves the contradiction between measurement performance and material strength
2Measurement precision
If glass electrodes are used as measurement electrodes, then measurement accuracy is high, but manufacturing cost is high and storage requirements are strict
Solution Approach 1:
The ruthenium-iridium electrode is designed to be more cost-effective than traditional glass electrodes. The material can be deposited on various substrates using cost-effective methods, and the electrode does not require expensive storage facilities or special handling, making it economically advantageous
Solution Approach 2:
The ruthenium-iridium electrode exhibits self-cleaning properties due to its catalytic activity, which prevents fouling and maintains measurement accuracy without requiring complex maintenance procedures or special storage conditions, reducing both manufacturing and operational costs
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 ruthenium-iridium electrode provides a stable, cost-effective, and durable pH sensing material with a wide pH response range (pH 2-12), high response speed, and reliable long-term performance, suitable for diverse application scenarios.
Implementation Method 1
can easily, rapidly and accurately measure the pH value of samples in terms of a corresponding relationship between the electrode potential of a sensing electrode and pH
Implementation Method 2
the ruthenium-iridium electrode is obtained by thermal decomposition of a ruthenium oxide-iridium oxide titanium-based material
Data Source
AI summary
A water pH detection sensor and a use of a ruthenium-iridium electrode as a PH sensing material. The water pH detection sensor includes a ruthenium-iridium electrode and a reference electrode, and the pH value of a solution to be detected is obtained by means of a voltage between the ruthenium-iridium electrode and the reference electrode. The ruthenium-iridium electrode is used as the pH sensing material, the electrode potential of the material in a solution has a good linear correspondingly relationship with a hydrogen ion concentration, and the material has the features of a wide pH value response range, a high response speed, a stable response performance and repeated measurement and use, and is suitable for different practical application scenarios.