Electrochemical performance, microstructure and chemical compositions of Cu-based nanoparticles driven by exsolution of CuFe2O4 in CO2/H2O and H2O electrolysis

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

Abstract

Use of perovskite as a cathode for solid oxide electrolysis cell is limited by its insufficient electrolysis current density or catalytic activity. Most of present perovskites used has a crucial drawback - significant segregation of A-site cations (i.e. SrO), likely resulting in the degradation of performance. In this work, spinel oxide of CuFe2O4, which is an alkline earth metal free oxide, is applied as the cathode material to investigate its electrochemical performance, microstructure and chemical composition in the electrolysis of CO2/H2O, steam and CO2. It was found that the exsolution of Cu nanoparticles was observed in CO2/H2O co-electrolysis and the microstructure of CuFe2O4 influenced significantly by operating in different CO2/H2O compositions. Despite the significantly microstructural variation of the CuFe2O4 layer, the cell performs relatively stable electrochemical performance in CO2/H2O and steam electrolysis.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC 2019
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages2425-2432
Number of pages8
Edition1
ISBN (Electronic)9781607688747
DOIs
Publication statusPublished - Jan 1 2019
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
Duration: Sep 8 2019Sep 13 2019

Publication series

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

Conference

Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019
CountryJapan
CityKyoto
Period9/8/199/13/19

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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