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

Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

64.5K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
64.5K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

489
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
489
Electrical Conductivity01:13

Electrical Conductivity

1.4K
In perfect conductors, the electric field inside is always zero due to the abundance of free electrons, which nullify any field by flowing. As a result, any residual charge resides on the surface.
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
1.4K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

552
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...
552
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.5K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.5K
Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

1.9K
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...
1.9K

You might also read

Related Articles

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

Sort by
Same author

Ta<sub>3</sub>N<sub>5</sub> Nanosheets Derived from TaS<sub>2</sub> as Efficient Photocatalysts for Water Oxidation.

Journal of the American Chemical Society·2026
Same author

Single-crystalline Ba<sub>x</sub>Sr<sub>1-x</sub>TaO<sub>2</sub>N solid-solution photocatalyst with low defect concentrations for solar-driven water splitting.

Nature communications·2026
Same author

Interfacial Disordering and Heterojunction Enabling Fast Proton Conduction.

Small methods·2023
Same author

Phase Evolution and Electrochemical Properties of Nanometric Samarium Oxide for Stable Protonic Ceramic Fuel Cells.

Chemphyschem : a European journal of chemical physics and physical chemistry·2022
Same author

Unveiling the role of lithium in cerium oxide based ceramic fuel cells employing lithium compounds as the anode.

Physical chemistry chemical physics : PCCP·2022
Same author

Nickel-iron nanoparticles encapsulated in carbon nanotubes prepared from waste plastics for low-temperature solid oxide fuel cells.

iScience·2022

Related Experiment Video

Updated: Sep 29, 2025

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

10.0K

Development of a Core-Shell Heterojunction TiO2 /SrTiO3 Electrolyte with Improved Ionic Conductivity.

Li Fang1, Enyi Hu1, Xiaojian Hu2

  • 1Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing, 210096, China.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|March 24, 2022
PubMed
Summary

Researchers developed a novel TiO2-SrTiO3 core-shell electrolyte for semiconductor-membrane fuel cells (SMFCs). This material enhances proton conductivity, achieving high power density at low temperatures (<550°C) for efficient energy conversion.

Keywords:
core-shelldepletion regionheterojunctionions conductivitysemiconductor membrane

More Related Videos

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.3K
Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.4K

Related Experiment Videos

Last Updated: Sep 29, 2025

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

10.0K
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.3K
Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.4K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Semiconductor-membrane fuel cells (SMFCs) are gaining interest for high performance at low temperatures (<550°C).
  • Developing advanced electrolytes is crucial for improving SMFC efficiency and lowering operational temperatures.
  • Nanostructured materials offer unique properties for enhanced ion transport in fuel cells.

Purpose of the Study:

  • To synthesize a nanocomposite core-shell heterostructure (TiO2-SrTiO3) electrolyte powder for SMFCs.
  • To investigate the heterojunction mechanism responsible for enhanced protonic conductivity.
  • To evaluate the performance of the developed electrolyte in SMFCs at low operational temperatures.

Main Methods:

  • Hydrothermal synthesis of TiO2-SrTiO3 core-shell nanocomposite powder.
  • Characterization of the core-shell structure and material properties.
  • Fabrication and testing of SMFCs utilizing the synthesized electrolyte.

Main Results:

  • Successful synthesis of TiO2-SrTiO3 core-shell heterostructure via hydrothermal method.
  • Demonstration of a heterojunction mechanism promoting proton transport and conductivity.
  • Achieved peak power density of 951 mW/cm² and open-circuit voltage of 1.075 V at 550°C.
  • Formation of a depletion region at the interface facilitated accelerated ion transport and reduced activation energy.

Conclusions:

  • The TiO2-SrTiO3 core-shell heterostructure effectively enhances proton transport in SMFCs.
  • The proposed heterojunction mechanism provides insights into improved ion conductivity.
  • This work presents a novel methodology for developing high-performance, low-temperature ceramic fuel cells.