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Radiation-grafted anion-exchange membranes: the switch from low- to high-density polyethylene leads to remarkably enhanced fuel cell performance

Wang, Lianqin, Peng, Xiong, Mustain, William E. and Varcoe, John R. (2019) Radiation-grafted anion-exchange membranes: the switch from low- to high-density polyethylene leads to remarkably enhanced fuel cell performance Energy & Environmental Science, 12. pp. 1575-1579.

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Abstract

Herein we detail the development of a new high-density polyethylene-(HDPE)-based radiation-grafted anion-exchange membrane (RG-AEM) that achieves a surprisingly high peak power density and a low in situ degradation rate (with configurations tailored to each). We also show that this new AEM can be successfully paired with an exemplar non-Pt-group cathode.

Broader context: A primary motivation for the development of anion-exchange membrane (AEM) fuel cells (AEMFCs) is the broader range of sustainable, non-precious-metal catalysts that are feasible; if costs are lowered enough, AEMFCs would be deployable in a range of stationary power sectors (e.g. back-up and off-grid). However, as the performance of AEMFCs typically drop when Pt-based electrodes are replaced with non-Pt types, it is essential that the highest performing polyelectrolytes are developed, both membranes and ionomers (the latter incorporated to impart ionic conductivity in the electrodes). The findings with the high conductivity AEM reported herein will also be of interest to developers of AEMs for metal–air and redox-flow batteries, electrolysers (both H2O → H2 and CO2 → high-value chemicals and fuels), and salinity gradient power.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Wang, Lianqinlianqin.wang@surrey.ac.uk
Peng, Xiong
Mustain, William E.
Varcoe, John R.J.Varcoe@surrey.ac.uk
Date : 26 April 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1039/C9EE00331B
Copyright Disclaimer : © The Royal Society of Chemistry 2019
Depositing User : Clive Harris
Date Deposited : 14 May 2019 08:12
Last Modified : 16 Aug 2019 13:23
URI: http://epubs.surrey.ac.uk/id/eprint/851806

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