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

You might also read

Related Articles

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

Sort by
Same author

Vacancy-Engineered Interfacial Electrons Modulation in NiCo Hydroxide/MoS<sub>2</sub> Heterostructures for Boosted OER Electrocatalysis.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

The 15-year bibliometric landscape of glioblastoma vaccines: Emergence of combinatorial immunotherapy.

Human vaccines & immunotherapeutics·2026
Same author

Regulation of Calcium Homeostasis by PIEZO1 Drives NETosis and Fibrosis in Bronchopulmonary Dysplasia.

Journal of cellular and molecular medicine·2026
Same author

miR-3921 functions as a tumor suppressor and negatively regulates RIPK1 in gastric cancer.

PeerJ·2026
Same author

Why choose pediatrics? A survey on factors influencing Chinese high school students' choice of pediatrics major.

Frontiers in medicine·2026
Same author

Universal Fluorine-Free Proton Exchange Polymers for High-Performance and Durable Fuel Cells Operable Under Severe Conditions.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Oct 22, 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

10.1K

ePTFE reinforced, sulfonated aromatic polymer membranes enable durable, high-temperature operable PEMFCs.

Zhi Long1,2, Kenji Miyatake1,3,2

  • 1Clean Energy Research Center, University of Yamanashi, Yamanashi 400-8510, Japan.

Iscience
|August 30, 2021
PubMed
Summary

New sulfonated polyphenylene (SPP)-based ionomers (SPP-TP-f) offer enhanced proton conductivity and fuel cell performance, overcoming limitations of traditional SPPs. These materials show promise for electrochemical applications, especially under challenging conditions.

Keywords:
ChemistryElectrochemical energy conversionElectrochemistryEnergy materialsMaterials science

More Related Videos

Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process
12:00

Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process

Published on: March 21, 2014

12.0K
Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion
06:15

Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion

Published on: August 15, 2016

7.9K

Related Experiment Videos

Last Updated: Oct 22, 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

10.1K
Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process
12:00

Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process

Published on: March 21, 2014

12.0K
Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion
06:15

Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion

Published on: August 15, 2016

7.9K

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Electrochemistry

Background:

  • Sulfonated polyphenylene (SPP)-based ionomers exhibit thermal and chemical stability, making them suitable for electrochemical applications.
  • Challenges such as difficult synthesis, limited solubility, and rigid backbones have hindered the progress of traditional SPP ionomers.
  • Nafion is the current benchmark proton exchange membrane, but its performance can be limited under certain conditions.

Purpose of the Study:

  • To design and synthesize novel SPP-based ionomers with improved properties.
  • To evaluate the proton conductivity and fuel cell performance of the new ionomers, particularly under low humidity and high temperatures.
  • To enhance the mechanical properties and processability of the SPP ionomers through reinforcement.

Main Methods:

  • A new monomer, 3,3″-dichloro-2',3',5',6'-tetrafluoro-1,1':4',1″-terphenyl (TP-f), was synthesized.
  • SPP-based ionomers (SPP-TP-f) were prepared by polymerizing the new monomer with a sulfonated phenylene monomer.
  • The resulting ionomers were characterized for ion exchange capacity, proton conductivity, solubility, and fuel cell performance.
  • A reinforced membrane (SPP-TP-f 5.1/DPTFE) was fabricated using double expanded polytetrafluorethylene (DPTFE) thin layers.

Main Results:

  • SPP-TP-f ionomers achieved a high ion exchange capacity of up to 4.5 mequiv g-1.
  • The flexible SPP-TP-f membranes exhibited higher proton conductivity than Nafion, even at 120°C and 20% relative humidity (RH).
  • SPP-TP-f 5.1 demonstrated solubility in ethanol, enabling reinforcement with DPTFE to create SPP-TP-f 5.1/DPTFE membranes.
  • SPP-TP-f 5.1/DPTFE showed superior fuel cell performance compared to Nafion, especially at 30% RH and above 100°C.
  • The reinforced membrane exhibited reasonable durability under accelerated conditions, including open-circuit voltage (OCV) hold and humidity cycling tests.

Conclusions:

  • The developed SPP-TP-f ionomers overcome the limitations of traditional SPPs, offering improved solubility and processability.
  • These novel ionomers demonstrate excellent proton conductivity and fuel cell performance, outperforming Nafion under specific challenging conditions.
  • The reinforced SPP-TP-f 5.1/DPTFE membrane represents a promising alternative for proton exchange membrane fuel cells, particularly for low-humidity and high-temperature operation.