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Polymer electrolyte membrane water electrolyser with Aquivion (R) short side chain perfluorosulfonic acid ionomer binder in catalyst layers

Lookup NU author(s): Xu Wu, Emeritus Professor Keith Scott, Vinod Puthiyapura

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Abstract

The Aquivion (R) short-side-chain (SSC) perfluorosulfonic acid (PFSA) ionomer was adopted in catalyst layers (CL) of polymer electrolyte membrane water electrolysers (PEMWE) instead of long-side-chain (LSC) Nafion (R) ionomer. The effects of SSC ionomer content in CL for oxygen evolution reaction were studied in half cell with cyclic voltammetry and steady state linear sweep. In a single cell test the MEA with SSC-PFSA Aquivion (R) ionomer exhibited better thermal stability than the one with LSC-PFSA Nafion (R) ionomer at 90 degrees C. The cell voltage at a current density of 1 A cm(-2) was 1.63 V at 90 degrees C using the SSC-PFSA Aquivion (R) ionomer binder, Nafion (R) 117 membrane, and without back pressurizing. In a continuous operation the cell voltage degradation rate of the MEA using Aquivion (R) ionomer binder was only about 0.82 mV h(-1). Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Wu X, Scott K, Puthiyapura V

Publication type: Article

Publication status: Published

Journal: International Journal of Hydrogen Energy

Year: 2012

Volume: 37

Issue: 18

Pages: 13243-13248

Print publication date: 01/09/2012

ISSN (print): 0360-3199

ISSN (electronic): 1879-3487

Publisher: Elsevier Ltd

URL: http://dx.doi.org/10.1016/j.ijhydene.2012.06.093

DOI: 10.1016/j.ijhydene.2012.06.093

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