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Reference Electrodes with Ionic Liquid Salt Bridge: When Will These Innovative Novel Reference Electrodes Gain Broad
Ernő Lindner1, Marcin Guzinski1, Taskia A Khan1
1Department of Biomedical Engineering , The University of Memphis , Memphis , Tennessee 38152 , United States.
ACS Sensors
|February 15, 2019
Summary
Researchers considering ionic liquid reference electrodes must evaluate ionic liquid choice, purity, membrane implementation, and experimental conditions. Proper selection ensures optimal performance and reliable electrochemical measurements.
Area of Science:
- Electrochemistry
- Materials Science
Background:
- Conventional reference electrodes face limitations in certain applications.
- Ionic liquids offer potential advantages for reference electrode development.
Purpose of the Study:
- To address critical questions for researchers replacing conventional electrodes with ionic liquid-based ones.
- To guide the selection and implementation of ionic liquid reference electrodes.
Main Methods:
- Literature review and analysis of experimental data.
- Evaluation of ionic liquid properties, membrane configurations, and experimental parameters.
Main Results:
- Ionic liquid selection is crucial, but purity and stoichiometric composition significantly impact performance.
- The physical form of the ionic liquid (e.g., free-flowing vs. embedded) and membrane material are critical factors.
- Experimental conditions, such as steady-state or flowing environments, affect electrode stability and accuracy.
Conclusions:
- Successful implementation of ionic liquid reference electrodes requires careful consideration of multiple factors beyond basic composition.
- Recommendations are provided for testing and validating the performance of these advanced electrochemical tools.
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