Related Experiment Video
Updated: Aug 7, 2026
07:23
Fabrication of Thin Film Silver/Silver Chloride Electrodes with Finely Controlled Single Layer Silver Chloride
Published on: July 1, 2020
Fabrication of a planar-form screen-printed solid electrolyte modified Ag/AgCl reference electrode for application in
1Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
Analytical Chemistry
|June 15, 2006
Summary
A novel, low-cost planar-form, solid electrolyte modified (PSEM) Ag/AgCl reference electrode was developed using screen printing. This cost-effective electrode is suitable for mass production and performs reliably in chip-type biosensors.
Area of Science:
- Electrochemistry
- Materials Science
- Sensor Technology
Background:
- Conventional Ag/AgCl reference electrodes are crucial for electrochemical measurements.
- There is a need for cost-effective, mass-producible reference electrodes for miniaturized sensors.
- Existing reference electrodes can be sensitive to various ionic species, limiting their application.
Purpose of the Study:
- To fabricate a planar-form, solid electrolyte modified (PSEM) Ag/AgCl reference electrode using screen printing.
- To evaluate the performance and stability of the PSEM Ag/AgCl reference electrode.
- To integrate the PSEM Ag/AgCl reference electrode into a chip-type pH biosensor and assess its efficacy.
Main Methods:
- Screen-printing fabrication of the PSEM Ag/AgCl reference electrode using agar gel and chloroprene rubber.
- Testing the electrode's response to physiologically important ionic species (Na+, K+, Li+, Ca2+, NH4+, Cl-).
- Integrating the PSEM Ag/AgCl electrode with a Pt-based pH indicator electrode to create a chip-type pH biosensor.
- Comparing the biosensor's performance with a conventional macroscopic Ag/AgCl reference electrode.
Main Results:
- The PSEM Ag/AgCl reference electrode was successfully fabricated using a simple, low-cost screen-printing method.
- The developed electrode demonstrated insensitivity to key physiological ions under continuous measurement.
- The electrode exhibited a reversible response, comparable to commercial electrodes, until the electrolyte dried.
- The chip-type pH biosensor integrated with the PSEM Ag/AgCl electrode provided precise pH measurements for real samples.
Conclusions:
- The PSEM Ag/AgCl reference electrode offers a cost-efficient and viable alternative for mass production.
- Its stability and insensitivity to common ions make it suitable for various biosensing applications.
- This novel electrode technology can replace conventional macroscopic Ag/AgCl electrodes in chip-based sensors.
Related Concept Videos
01:15Potentiometry: Membrane Electrodes
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
01:19Potentiometry: Types of Electrodes
Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...