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

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...
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...
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...

You might also read

Related Articles

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

Sort by
Same author

Effects of Sr<sup>2+</sup> Doping on Phase Stability and Lithium-Ion Conductivity in Pyrochlore-type Oxyfluoride Solid Electrolytes.

Inorganic chemistry·2026
Same author

Quasi-solid electrolytes using a single-cation ionic liquid.

Physical chemistry chemical physics : PCCP·2026
Same author

Quantum-chemical insights into the design of molecule-modified Pt catalysts for the oxygen reduction reaction.

Physical chemistry chemical physics : PCCP·2026
Same author

Synthesis, Structures, and Properties of λ<sup>5</sup>-Phosphinine Functionalized with <i>p</i>-Benzoquinone.

The Journal of organic chemistry·2026
Same author

Expanding the Molecular Library for In Situ Polymerization: Design and Evaluation of Dithiafulvene- and Triphenylamine-Based Cathode Materials.

ChemSusChem·2026
Same author

Anthraquinone Derivatives with Diphenylamino or Carbazole Groups: Organic Active Materials for Use in Lithium-Ion Batteries.

Chemphyschem : a European journal of chemical physics and physical chemistry·2025

Related Experiment Video

Updated: Jun 5, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Sandwich-Structured Covalent Organic Framework as a Proton Exchange Membrane.

Minami Kato1, Hikaru Sano1, Yuta Ito1

  • 1Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka, Japan.

Chemsuschem
|June 4, 2026
PubMed
Summary

A new sandwich-type layered covalent organic framework (COF) membrane (BD/SB/BD) shows enhanced proton conductivity, especially under low humidity conditions, for fuel cell applications.

Keywords:
covalent organic frameworkshigh‐temperature fuel cellshumidity dependenceproton conductivityproton exchange membrane

More Related Videos

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

Related Experiment Videos

Last Updated: Jun 5, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks (COFs): A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Developing proton exchange membranes (PEMs) for fuel cells that perform well at high temperatures and low humidity is crucial.
  • Current PEMs often suffer from decreased proton conductivity and stability under these demanding conditions.

Purpose of the Study:

  • To synthesize and characterize a novel sandwich-type layered covalent organic framework (COF) membrane, termed BD/SB/BD, for improved fuel cell performance.
  • To evaluate the proton conductivity and stability of the BD/SB/BD membrane, particularly under elevated temperatures and reduced humidity.

Main Methods:

  • Synthesis of a composite membrane with a TpSB-(SO3H)2 layer sandwiched between TpBD-(SO3H)2 layers.
  • Characterization of the membrane's structure and properties.
  • Measurement of proton conductivity at various temperatures and humidity levels.

Main Results:

  • The BD/SB/BD composite membrane achieved high proton conductivity (158 mS cm⁻¹ at 90°C, 100% RH).
  • The composite membrane demonstrated superior performance compared to single-component membranes under intermediate-to-low humidity at 100°C.
  • Enhanced water retention and dimensional stability were observed due to the synergistic effect of the COF components.

Conclusions:

  • The BD/SB/BD membrane offers a promising solution for high-temperature, low-humidity fuel cell applications.
  • The unique layered structure and combination of COF components contribute to improved proton conductivity and membrane stability.
  • This work advances the development of next-generation proton exchange membranes for efficient energy conversion.