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Related Concept Videos

Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Potentiometry: Membrane Electrodes01:15

Potentiometry: 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...
Electrodeposition01:08

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrochemical Systems01:24

Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

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Related Experiment Video

Updated: Jun 28, 2026

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
12:28

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

Liquid ion-exchange membrane electrode for lithium.

W A Hildebrandt1, K H Pool

  • 1Chemistry Department, Washington State University, Pullman, WA 99163, U.S.A.

Talanta
|June 1, 1976
PubMed
Summary
This summary is machine-generated.

A novel lithium-selective electrode using n-decanol as the liquid membrane and exchanger offers high selectivity and a broad linear response range. This sensor provides performance comparable to existing glass electrodes for univalent cations.

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Area of Science:

  • Electrochemistry
  • Analytical Chemistry
  • Materials Science

Background:

  • Accurate detection of lithium ions is crucial in various chemical and biological applications.
  • Existing lithium-ion selective electrodes often face challenges with selectivity and response range.

Purpose of the Study:

  • To develop a new electrode with enhanced selectivity for lithium ions over other alkali metals.
  • To characterize the performance of the novel n-decanol-based sensor.

Main Methods:

  • Fabrication of a liquid membrane electrode utilizing n-decanol as both the membrane solvent and ion exchanger.
  • Electrochemical measurements to assess the electrode's response and selectivity.

Main Results:

  • The developed electrode demonstrated a linear, near-Nernstian response over more than three orders of magnitude.
  • Achieved selectivity for lithium ions comparable to the established LAS 15-25 glass univalent-cation electrode.

Conclusions:

  • N-decanol serves as an effective component for creating highly selective lithium-ion sensors.
  • The new electrode offers a promising alternative for lithium ion detection with excellent performance characteristics.