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Composite Materials with Combined Electronic and Ionic Properties

Ralbag, N; Mann-Lahav, M; Davydova, ES; Ash, U; Galed, R; Handl, M; Hiesgen, R; ... Dekel, DR; + view all (2019) Composite Materials with Combined Electronic and Ionic Properties. Matter , 1 (4) pp. 959-975. 10.1016/j.matt.2019.04.007. Green open access

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Abstract

In this work, we develop a new type of composite material that combines both electrocatalytic and ionic properties, by doping a silver metal catalyst with an anion-conducting ionomer at the molecular level. We show that ionomer entrapment into the silver metallic structure is possible, imparting unique properties to the catalytic character of the metallic silver. The novel composite material is tested as the cathode electrode of fuel cells, showing significant improvement in cell performance as compared with the undoped counterpart. This new type of material may then replace the current design of electrodes in advanced fuel cells or other electrochemical devices. The possibility to merge different properties into one composite material by molecular entrapment in metals can open the way to new materials, leading to unexplored fields and applications.

Type: Article
Title: Composite Materials with Combined Electronic and Ionic Properties
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.matt.2019.04.007
Publisher version: https://doi.org/10.1016/j.matt.2019.04.007
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: entrapment, metals, ionomers, electrocatalysts, ionic conductivity, electronic conductivity, composites, electrodes, fuel cells, anion-exchange membrane fuel cells
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10086305
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