Non-Fluorinated High Performance Pre-Irradiation Grafted Anion-Exchange Membranes

An efficient and effective process for the production of high-performance anion exchange membranes (AEMs) is necessary for the commercial application of fuel cells. Therefore, in this study, quaternized poly vinylbenzyl chloride (QVBC) and polysulfone were composited with glycidyltrimethylammonium-chloride-quaternized chitosan (QCS) at different ratios (viz., 1 wt %, 5 wt %, and 10 wt %). The structure and morphology of the membranes were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. Further, the water uptake, swelling ratio, and ionic conductivities of the composite membrane at different wt % of QCS were evaluated. The membrane with 5% QCS exhibited an ionic conductivity of 49.6 mS/cm and 130 mS/cm at 25 °C and 70 °C, respectively.

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High Performance of Alkaline Anion-Exchange Membranes Based on Chitosan/Poly (vinyl) Alcohol Doped with Graphene Oxide for the Electrooxidation of Primary Alcohols

C – Journal of Carbon Research ◽

10.3390/c2020010 ◽

2016 ◽

Vol 2 (2) ◽

pp. 10 ◽

Cited By ~ 7

Author(s):

Leticia García-Cruz ◽

Clara Casado-Coterillo ◽

Ángel Irabien ◽

Vicente Montiel ◽

Jesus Iniesta

Keyword(s):

Graphene Oxide ◽

Anion Exchange ◽

Vinyl Alcohol ◽

High Performance ◽

Poly Vinyl Alcohol ◽

Anion Exchange Membranes ◽

Primary Alcohols

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Electrospun Composite Proton-Exchange and Anion-Exchange Membranes for Fuel Cells

Energies ◽

10.3390/en14206709 ◽

2021 ◽

Vol 14 (20) ◽

pp. 6709

Author(s):

Zhihao Shang ◽

Ryszard Wycisk ◽

Peter Pintauro

Keyword(s):

Fuel Cells ◽

Fuel Cell ◽

Anion Exchange ◽

High Performance ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

Anion Exchange Membranes ◽

Dry Conditions ◽

Water Swelling ◽

Exchange Membrane

A fuel cell is an electrochemical device that converts the chemical energy of a fuel and oxidant into electricity. Cation-exchange and anion-exchange membranes play an important role in hydrogen fed proton-exchange membrane (PEM) and anion-exchange membrane (AEM) fuel cells, respectively. Over the past 10 years, there has been growing interest in using nanofiber electrospinning to fabricate fuel cell PEMs and AEMs with improved properties, e.g., a high ion conductivity with low in-plane water swelling and good mechanical strength under wet and dry conditions. Electrospinning is used to create either reinforcing scaffolds that can be pore-filled with an ionomer or precursor mats of interwoven ionomer and reinforcing polymers, which after suitable processing (densification) form a functional membrane. In this review paper, methods of nanofiber composite PEMs and AEMs fabrication are reviewed and the properties of these membranes are discussed and contrasted with the properties of fuel cell membranes prepared using conventional methods. The information and discussions contained herein are intended to provide inspiration for the design of high-performance next-generation fuel cell ion-exchange membranes.

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