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

Ionic Association01:28

Ionic Association

199
The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.
199
Semiconductors01:22

Semiconductors

2.0K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
2.0K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

1.4K
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
1.4K
Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

3.1K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
3.1K
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

111
The interionic forces of the strong electrolytes depend on the solvent's dielectric constant, which is the ability of a solvent to store electrical energy, based on its polarizability. and the solution's concentration. In high-dielectric solvents and in dilute solutions, weak electrostatic forces keep ions apart. However, in low-dielectric solvents or concentrated solutions, stronger interionic forces may cause ions to pair up as ionic doublets despite being fully ionized. The theory of strong...
111
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

21.0K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
21.0K

You might also read

Related Articles

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

Sort by
Same author

REST-driven upregulation of SFXN3 promotes AML progression via Wnt/β-catenin activation and confers decitabine resistance.

Translational oncology·2026
Same author

Rewiring immune evasion in liver metastases: WNT11 as a central node - a mini review.

Frontiers in oncology·2025
Same author

Integrated multidisciplinary nursing with enhanced recovery protocols improves postoperative outcomes in glioma patients.

Medicine·2025
Same author

Fucoidan in cancer therapy: from biomedical application to medicinal chemistry approach.

Journal of materials science. Materials in medicine·2025
Same author

Development and validation of a predictive model for acute postoperative pain after thoracoscopic lobectomy in patients with NSCLC: a multicenter retrospective study.

International journal of surgery (London, England)·2025
Same author

DNA self-assembly-based direct fluorescence encoding of targets enables simultaneous 10-plex microRNA detection.

Biosensors & bioelectronics·2025
Same journal

Unlocking the capacity of Mn-based Prussian blue cathodes in capacitive deionization.

Nature communications·2026
Same journal

Scaling biodiversity-stability relationships from populations to meta-communities across trophic levels.

Nature communications·2026
Same journal

Thermodynamically programmed one-pot CRISPR platform for point-of-care SNP genotyping.

Nature communications·2026
Same journal

Engineering all-organic electrocatalysts with asymmetric dual-active sites for uncommon oxygen-evolving pathway.

Nature communications·2026
Same journal

Rapid GC content evolution in rice through GC-biased gene conversion and selection for translation efficiency.

Nature communications·2026
Same journal

Declines in organic matter persistence with increased soil carbon.

Nature communications·2026
See all related articles

Related Experiment Video

Updated: Apr 15, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

12.1K

Enhancing grain boundary ionic conductivity in mixed ionic-electronic conductors.

Ye Lin1, Shumin Fang1, Dong Su2

  • 1Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA.

Nature Communications
|April 11, 2015
PubMed
Summary
This summary is machine-generated.

Targeted phase formation in ceria-ferrite composites enhances ionic conductivity by preventing dopant segregation at grain boundaries. This improves performance in energy devices by boosting ion transport.

More Related Videos

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

13.4K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.7K

Related Experiment Videos

Last Updated: Apr 15, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

12.1K
Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

13.4K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.7K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Mixed ionic-electronic conductors are crucial for energy conversion and storage devices.
  • Grain boundaries in these materials can impede ionic transport due to dopant segregation.
  • Understanding and mitigating grain boundary resistance is key to improving device efficiency.

Purpose of the Study:

  • To introduce a novel approach for enhancing grain boundary ionic conductivity in mixed ionic-electronic conductors.
  • To investigate the effect of targeted phase formation on dopant segregation and oxygen vacancy distribution.
  • To demonstrate improved ionic transport properties in a ceria-ferrite composite.

Main Methods:

  • Fabrication of a Ce0.8Gd0.2O2-δ-CoFe2O4 composite material.
  • Utilizing transmission electron microscopy and spectroscopy to analyze grain boundary characteristics.
  • Measuring oxygen permeation flux to quantify ionic conductivity.

Main Results:

  • Formation of an emergent phase at the grain boundaries was achieved through targeted phase formation.
  • The emergent phase successfully prevented Gadolinium (Gd) dopant segregation and oxygen vacancy depletion.
  • Enhanced grain boundary ionic conductivity was confirmed by a significant increase in oxygen permeation flux.

Conclusions:

  • Targeted phase formation is an effective strategy to engineer grain boundary properties in mixed ionic-electronic conductors.
  • Controlling mesoscale transport properties can be achieved by modifying grain boundary defect distribution through processing.
  • This approach offers a pathway to develop more efficient materials for energy applications.