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

Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

590
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...
590

You might also read

Related Articles

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

Sort by
Same author

Design and performance evaluation of biphenyl-based high-performance dental composite resins reinforced with porous lithium disilicate.

Dental materials : official publication of the Academy of Dental Materials·2026
Same author

Impact of Anterior Mitral Leaflet Length on the Efficacy of Intracardiac Echocardiography-Guided Endocardial Septal Ablation for HOCM.

Journal of cardiovascular development and disease·2026
Same author

Hyperbaric oxygen therapy for ischemic encephalopathy following occupational exposure to high-concentration toxic gases: two Case Reports.

Frontiers in toxicology·2026
Same author

Screening of immune adjuvants for an attenuated live vaccine derived from the Aeromonas veronii TH0426 strain with a hisJ gene deletion and evaluation of its immune protection in crucian carp.

Fish & shellfish immunology·2026
Same author

Difluorocarbene-Enabled Selective Cleavage and Reconstruction of Aliphatic Tertiary Amine C<i>sp</i><sup>3</sup>-N Bonds.

Organic letters·2026
Same author

Comparison of systolic and diastolic CT-FFR for myocardial ischemia diagnosis.

BMC medical imaging·2026

Related Experiment Video

Updated: Jul 10, 2025

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

10.0K

Sulfonated Polyimide Membranes Constructed by Main-Chain and Molecular-Network Engineering Strategy for Direct

Hang Fan1, Tiantian Xie1, Yang Pang1

  • 1National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, P. R. China.

Macromolecular Rapid Communications
|November 24, 2023
PubMed
Summary

New sulfonated polyimides with improved methanol resistance and low swelling were developed for direct methanol fuel cells (DMFCs). These materials offer high proton conductivity, making them promising for enhanced fuel cell performance.

Keywords:
cross-linkingmethanol resistancesulfonated polyimide

More Related Videos

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
07:32

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

Published on: April 7, 2017

9.4K
Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
08:06

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

Published on: February 23, 2017

8.5K

Related Experiment Videos

Last Updated: Jul 10, 2025

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

10.0K
Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
07:32

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

Published on: April 7, 2017

9.4K
Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
08:06

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

Published on: February 23, 2017

8.5K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Excessive swelling in proton exchange membranes (PEMs) limits methanol operating concentration and increases fuel permeability in direct methanol fuel cells (DMFCs).
  • Highly sulfonated polyimides (SPIs) are promising PEM candidates but suffer from swelling issues.
  • Engineering molecular structure is crucial for enhancing SPI properties for fuel cell applications.

Purpose of the Study:

  • To develop novel cross-linked sulfonated polyimides (CSPIs) with reduced swelling and improved methanol resistance.
  • To investigate the effect of main-chain and molecular-network engineering on SPI properties.
  • To evaluate the performance of CSPIs as proton exchange membranes in DMFCs.

Main Methods:

  • Synthesized two novel m-phenylenediamine monomers with tetrafluorostyrol groups.
  • Prepared two series of cross-linked sulfonated polyimides (CSPI-Ts and CSPI-Bs) using these monomers.
  • Characterized the physicochemical properties, including swelling ratio, methanol permeability, and proton conductivity.
  • Assembled and tested a direct methanol fuel cell (DMFC) using a selected CSPI membrane.

Main Results:

  • The synthesized CSPI-Ts and CSPI-Bs exhibited significantly reduced swelling ratios (9.6–16.1%) and low methanol permeability (4.14–7.69 × 10⁻⁷ cm² s⁻¹) at 80 °C.
  • These membranes demonstrated high proton conductivity (121–158 S cm⁻¹).
  • A DMFC utilizing CSPI-T-10 achieved a high maximum power density of 82.3 mW cm⁻² in 2 M methanol and maintained 88% of this performance in 10 M methanol.

Conclusions:

  • The combined main-chain rigidity and hydrophobic cross-linked network effectively suppressed swelling and enhanced methanol resistance in SPIs.
  • CSPI-T-10 shows excellent performance and stability, positioning it as a strong candidate for PEMs in DMFCs.
  • The developed materials address key limitations of traditional SPIs for efficient and practical fuel cell operation.