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Related Concept Videos

Potentiometry: Types of Electrodes01:19

Potentiometry: Types of Electrodes

1.1K
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...
1.1K
Electrodes: Overview01:17

Electrodes: Overview

2.0K
 Electrochemical measurements are conducted in an electrochemical cell composed of various components that control and measure the current and potential. One fundamental component is electrodes, conductive materials that enable electron transfer reactions at their surfaces.
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...
2.0K
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

930
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...
930
Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

66.7K
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
66.7K

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Versatile 3D-Printed Micro-Reference Electrodes for Aqueous and Non-Aqueous Solutions.

Fabian M Schuett1, Sven J Zeller1,2,3, Maximilian J Eckl1

  • 1Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany.

Angewandte Chemie (International Ed. in English)
|August 24, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed stable, 3D-printed micro-reference electrodes for non-aqueous electrolytes. These novel electrodes are leak-tight, exhibit stable potentials, and offer a versatile solution for small electrochemical cells.

Keywords:
3D-printingcyclic voltammetryelectrochemistrymicro-reference electrodessodium reference electrode

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Analytical Chemistry

Background:

  • Standard reference electrodes are lacking for non-aqueous electrolytes.
  • Existing reference electrodes are often too large for microscale electrochemical applications.

Purpose of the Study:

  • To develop a simple method for fabricating stable 3D-printed micro-reference electrodes.
  • To demonstrate the versatility of these electrodes across various aqueous and non-aqueous systems.

Main Methods:

  • Fabrication of micro-reference electrodes using 3D printing with polyvinylidene fluoride.
  • Testing of six reference systems (Ag, Cu, Zn, Na) in both aqueous and non-aqueous electrolytes.
  • Cyclic voltammetry and potential difference measurements against commercial electrodes and internal standards (ferrocene).

Main Results:

  • The 3D-printed micro-reference electrodes are chemically inert in various solvents.
  • Leak-tight performance and stable electrode potentials were observed.
  • Successful demonstration across multiple aqueous and non-aqueous reference systems.

Conclusions:

  • A new class of stable, leak-tight 3D-printed micro-reference electrodes has been successfully fabricated.
  • This technology offers a versatile and size-appropriate solution for electrochemical measurements in non-aqueous media.
  • The developed electrodes show potential for widespread use in miniaturized electrochemical systems.