Development of highly efficient composite electrodes, CuFe2O4-La(Sr)Fe(Mn)O3, for High-Temperature Co-Electrolysis of CO2-Steam

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

Abstract

La0.6Sr0.4Fe0.8Mn0.2O3-δ(LSFM) perovskite cathode has an advantage in product control for solid oxide electrolysis cell, while it limited by its insufficient electrolysis current density. To improve its electrochemical performance, we developed a highly efficient composite cathode by mixing LSFM with CuFe2O4 spinel. In this study, CO2/H2O co-electrolysis were investigated using CuFe2O4, LSFM and their composites as cathodes on LaGaO3- based electrolyte. It was found that mixing LSFM and CuFe2O4 was effective for a significant increase in the electrolysis current density in co-electrolysis. Compared to the individual LSFM (0.60 A/cm2) and CuFe2O4 (1.00 A/cm2) cathode, a promising electrolysis current density of 1.43 A/cm2 was achieved at 1.6 V and 800oC with excellent Coulombic efficiency (> 95% of theoretical value), remarkable operation stability and reversibility in co-electrolysis. In addition, a homogeneous and uniform surface morphology with a well-distributed porous structure was observed on the LSFM-CuFe2O4 composite layer after the operation.

Original languageEnglish
Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PublisherIOP Publishing Ltd.
Pages561-567
Number of pages7
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2021
Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Duration: Jul 18 2021Jul 23 2021

Publication series

NameECS Transactions
Number1
Volume103
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/TerritorySweden
CityStockholm
Period7/18/217/23/21

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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