Perfluorinated Sulfonic Acid-Based Ionomers: Current State and Prospects

Area of Science:

• Materials Science
• Polymer Chemistry
• Electrochemistry

Background:

• Perfluorinated sulfonic acid (PFSA) ionomers, like Nafion, are foundational in fuel cell technology.
• Recent advancements include alternative chemical modifications and new-generation composite membranes.
• Extensive experimental and modeling data necessitate a re-evaluation of traditional vs. modern ionomers.

Purpose of the Study:

• To review the current research landscape of PFSA ionomers.
• To identify new structural and functional patterns in PFSA materials.
• To analyze ionomer behavior across different states (thin films, interfaces, bulk membranes).

Main Methods:

• Comprehensive literature review of experimental and modeling data.
• Analysis of structural and functional properties.
• Multiscale modeling and advanced characterization techniques.

Main Results:

• Identification of novel structural and functional patterns in PFSA ionomers.
• Detailed analysis of ionomer behavior in various physical states.
• Summary of fragmented relationships within PFSA research.

Conclusions:

• PFSA ionomers are a dynamic interdisciplinary research platform.
• Technological progress in PFSA is driven by fundamental science.
• Understanding these materials is key to expanding their applications in electrochemical systems.