Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Processes at Electrodes01:30

Processes at Electrodes

The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
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...
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
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...
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Holistic Reinforcement Learning: The Role of Structure and Attention.

Trends in cognitive sciences·2019
Same author

Toward an integrative perspective on the neural mechanisms underlying persistent maladaptive behaviors.

The European journal of neuroscience·2018
Same author

Beyond Reward Prediction Errors: Human Striatum Updates Rule Values During Learning.

Cerebral cortex (New York, N.Y. : 1991)·2017
Same author

Defect chemistry, surface structures, and lithium insertion in anatase TiO2.

The journal of physical chemistry. B·2006
Same author

Influence of cation on charge recombination in dye-sensitized TiO2 electrodes.

The journal of physical chemistry. B·2006

Related Experiment Video

Updated: Jul 20, 2026

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells
09:30

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells

Published on: June 28, 2017

Charge accumulation and polarization in titanium dioxide electrodes.

Carol L Olson1, Ian Ballard

  • 1Department of Physics, Imperial College, Blackett Laboratory, Prince Consort Road, London SW7 2BZ, United Kingdom. carol.olson@fotomol.uu.se

The Journal of Physical Chemistry. B
|September 15, 2006
PubMed
Summary

Spectroelectrochemistry reveals how lithium ions interact with nanocrystalline titanium dioxide (TiO2) electrodes. Ion movement within TiO2 significantly alters its electrical properties, impacting performance in electrochemical applications.

More Related Videos

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
11:25

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
08:44

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Related Experiment Videos

Last Updated: Jul 20, 2026

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells
09:30

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells

Published on: June 28, 2017

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
11:25

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
08:44

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Area of Science:

  • Electrochemistry
  • Materials Science
  • Spectroscopy

Background:

  • Nanocrystalline titanium dioxide (TiO2) is a key material in various electrochemical applications.
  • Understanding ion transport mechanisms in TiO2 electrodes is crucial for optimizing device performance.
  • Spectroelectrochemical techniques offer insights into dynamic processes within electrode materials.

Purpose of the Study:

  • To investigate the spectroelectrochemical behavior of nanocrystalline TiO2 electrodes.
  • To analyze the influence of ionic polarization and lithium ion diffusion on TiO2.
  • To model the electrical properties and potential distribution within TiO2 nanoparticles.

Main Methods:

  • Spectroelectrochemistry was employed to monitor current and absorbance changes after voltage steps.
  • Equivalent circuit models were used to analyze ionic polarization and Li+ diffusion.
  • A dielectric model was applied to describe potential distribution in nanoparticles.

Main Results:

  • Two distinct time regimes were observed: ionic polarization and Li+ diffusion into TiO2.
  • Li+ ions significantly reduced TiO2 resistance (approx. 90%) and increased capacitance (approx. 350%).
  • Voltage cycling led to Li+ intercalation, enhancing inductive behavior and reducing response to potential steps.

Conclusions:

  • Ionic polarization and Li+ diffusion are critical factors governing TiO2 electrode behavior.
  • Li+ intercalation modifies the electrical properties of TiO2, improving its inductive characteristics.
  • Approximately half the applied potential drops across the interface with Li+-containing electrolytes.