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Electrochemical reduction of CO2 in a proton conducting solid oxide electrolyser

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Author(s)

Kui Xie, Yaoqing Zhang, Guangyao Meng, John Thomas Sirr Irvine

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Abstract

Synthetic hydrocarbon fuels from CO2/H2O are proposed as alternatives to hydrogen as an energy carrier to enable a carbon neutral energy cycle, given their inherent advantages of high H/C ratio and convenience of storage and transportation. Here we demonstrate the successful electrochemical reduction of CO2 into CO and CH4 in a proton conducting solid oxide electrolyser based on BaCe0.5Zr0.3Y0.16Zn0.04O3 (-) (delta) (BCZYZ) electrolyte and a composite iron/iron oxide cathode. The production of CH4 and CO reaches 0.07 and 3.25 ml min(-1) cm(-2), respectively, with 1.5 A cm(-2) at 614 degrees C. The overall CO2 conversion rate in the electrochemical reduction process is 65%.

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Original languageEnglish
Pages (from-to)195-198
JournalJournal of Materials Chemistry
Volume21
Issue number1
DOIs
Publication statusPublished - 2011

    Research areas

  • TEMPERATURE FUEL-CELLS, HYDROGEN-PRODUCTION, TECHNOLOGY, CAPTURE, STORAGE, ANODES

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