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Updated: Jun 6, 2025

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
Published on: October 10, 2016
Cationic groups in polystyrene/O-PBI blends influence performance and hydrogen crossover in AEMWE
Linus Hager1,2, Maximilian Schrodt1,2, Manuel Hegelheimer1,2
1Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IET-2), Cauerstr. 1, 91058 Erlangen, Germany. l.hager@fz-juelich.de.
Abstract:
This study examines the effect of various quaternary ammonium groups on AEMWE performance and hydrogen crossover in blends of quaternized polystyrenes with O-PBI. Due to their higher hydroxide conductivity (69 mS cm-1 at 80 °C, 90% RH), trimethylammonium groups enable AEMWE to reach 1.0 A cm-2 at 2.0 V. The trimethylammonium groups exhibit low hydrogen crossover, ranging from 1.5% to 0.3%, across current densities of 50 to 1000 mA cm-2. Low hydrogen crossover is essential for AEMWE in terms of safety and efficiency.
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