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Enhanced CO2 electrolysis at redox engineered interfaces

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Carbon dioxide obtained from industrial waste streams can be reduced to deliver significant reductions in global CO2 emissions. This can be achieved sustainably by utilising renewable electricity to drive the electrolysis. Solid Oxide Electrolysis (SOE) is an efficient, high temperature approach that reduces polarisation losses and best utilises process heat; however, at present, the technology is relatively unrefined for CO2 electrolysis. Approaches are based upon solid oxide fuel cell (SOFC) technology. There is an important need to develop new materials optimally tuned and better suited to the very different requirements of SOE. As in most electrochemical systems, the interfaces between active components are usually of great importance in determining the performance and lifetime of any application. Here, we report a generic approach of interface engineering to achieve active interfaces at nanoscale by a synergistic control of materials function and interface architecture. We show that the redox-engineered interfaces facilitate the atomic oxygen transfer from adsorbed CO2 molecules to the cathode lattice that determines CO2 electrolysis rate at elevated temperatures. Composite cathodes with in situ grown interfaces demonstrate significantly enhanced CO2 electrolysis and improved durability.
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Details

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC XVI
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society, Inc.
Pages2565-2570
Number of pages6
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 8 Sep 2019
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI - Kyoto, Japan
Duration: 8 Sep 201913 Sep 2019
Conference number: 16
http://www.eguchi-lab.ehcc.kyoto-u.ac.jp/SOFC_XVI/

Publication series

NameECS Transactions
Number1
Volume91
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC XVI
Abbreviated titleSOFC
CountryJapan
CityKyoto
Period8/09/1913/09/19
Internet address

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