Related Experiment Video
Updated: Jan 26, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
Sulfonated Poly(Arylene Ether Sulfone) and Perfluorosulfonic Acid Composite Membranes Containing Perfluoropolyether
1Department of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 599 Gwanak⁻ro, Gwanak⁻gu, Seoul 151⁻744, Korea. mywooya@hanmail.net.
Abstract:
Sulfonated poly(arylene ether sulfone) (SPAES) and perfluorosulfonic acid (PFSA) composite membranes were prepared using perfluoropolyether grafted graphene oxide (PFPE-GO) as a reinforcing filler for polymer electrolyte membrane fuel cell (PEMFC) applications. PFPE-GO was obtained by grafting poly(hexafluoropropylene oxide) having a carboxylic acid end group onto the surface of GO via ring opening reaction between the carboxylic acid group in poly(hexafluoropropylene oxide) and the epoxide groups in GO, using 4-dimethylaminopyridine as a base catalyst. Both SPAES and PFSA composite membranes containing PFPE-GO showed much improved mechanical strength and dimensional stability, compared to each linear SPAES and PFSA membrane, respectively. The enhanced mechanical strength and dimensional stability of composite membranes can be ascribed to the homogeneous dispersion of rigid conjugated carbon units in GO through the increased interfacial interactions between PFPE-GO and SPAES/PFSA matrices.
Related Concept Videos
Batteries and Fuel Cells
Electrophilic Aromatic Substitution: Sulfonation of Benzene
Electrolyte and Nonelectrolyte Solutions
The Resting Membrane Potential
Introduction to Membrane Proteins
Ethers to Alkyl Halides: Acidic Cleavage

