Ion Sensor Electrode Composite Layer for Potential Stability

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Solution Overview

Problem

Conventional ion sensors experience potential instability due to repeated and long-term use, necessitating frequent calibration and replacement of electrodes.

Innovation Solution

The electrode incorporates an internal solid layer containing a metal oxide and a solid electrolyte, enhancing stability for repeated and long-term use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional electrode structure is used, then the electrode can be manufactured with existing technology, but the potential stability deteriorates due to repeated use and long-term use

Engineering Contradiction:

Improvepotential stabilityVSAvoidelectrode lifespan

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The electrode employs a composite structure consisting of an internal solid layer containing metal oxide particles and a solid electrolyte. This composite material approach combines the electrochemical activity of metal oxide with the ionic conductivity of solid electrolyte, creating a stable interface that maintains potential consistency over repeated measurements and extended periods, thereby resolving the contradiction between reliability and duration of action.

Inventive Principle:

Principle #40Composite materials

2Measurement precision

If calibration is performed frequently to maintain accuracy, then measurement precision is improved, but productivity deteriorates due to increased calibration frequency

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidmeasurement throughput

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The electrode structure with metal oxide and solid electrolyte creates a self-stabilizing interface that automatically maintains consistent potential during repeated use. This self-service mechanism eliminates the need for frequent external calibration interventions, allowing the electrode to maintain measurement precision autonomously over extended periods, thus resolving the contradiction between measurement precision and productivity.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If calibration is performed frequently to ensure accuracy, then measurement precision is improved, but time consumption increases due to repeated calibration operations

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidcalibration time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The electrode's internal solid layer structure with metal oxide and solid electrolyte provides inherent stability that maintains measurement accuracy without requiring frequent calibration operations. This self-maintaining property significantly reduces the time lost to calibration procedures while preserving measurement precision, effectively resolving the contradiction between these two parameters.

Inventive Principle:

Principle #25Self-service

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 electrode achieves higher potential stability, reducing the frequency of calibration and replacement, and maintaining consistent performance over time.

Implementation Method 1

an internal solid layer containing a metal oxide and a solid electrolyte

Methodology Applied

Scientific EffectIon conduction: Conduction (electrical)

Data Source

PatentUS12411103B2Electrode, method for manufacturing electrode, ion sensor, in-vivo component measuring device, and in-vivo component measuring method

Publication Date: 2025.09.09 SYSMEX CORP

AI summary

An electrode with higher potential stability for repeated use and/or long-term use in an ion sensor is provided. The electrode includes an internal solid layer containing a metal oxide and a solid electrolyte and an electrode material.