Syngas production in high performing tubular solid oxide cells by using high-temperature H2O/CO2 co-electrolysis

Seong Bin Yu, Seung Ho Lee, Muhammad Taqi Mehran, Jong Eun Hong, Jong Won Lee, Seung Bok Lee, Seok Joo Park, Rak Hyun Song, Joon Hyung Shim, Yong Gun Shul, Tak Hyoung Lim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

By using electricity from renewable sources, high-temperature solid oxide co-electrolysis cells (SOCs) can perform advantageous conversion of H2O/CO2 to high-value syngas. In this work, we investigated the performance of tubular solid oxide co-electrolysis cells for the production of syngas by electrochemical conversion of H2O/CO2. The tubular solid-oxide electrolysis cells comprise Ni-yttria stabilized zirconia (Ni-YSZ) based fuel-electrode supported cells, a yttria or scandia-stabilized zirconia (YSZ and ScSZ) electrolyte, and a composite air-electrode of (La0.85Sr0.15)0.9MnO3 (LSM) and La0.6Sr0.4Co0.2Fe0.8O3 (LSCF). The electrochemical performance of the tubular SOCs for various operating conditions was analyzed using I-V curves, EIS analysis, and gas chromatography. From the results, we confirm the correlation between the operating conditions and the electrochemical performance of the co-electrolysis process in the tubular SOCs. Furthermore, we found that the syngas yield of the ScSZ electrolyte-based SOC cell was better than that of the YSZ electrolyte-based SOC. The results show that using a tubular SOC offered highly efficient conversion of H2O/CO2, with high yield and good-quality syngas.

Original languageEnglish
Pages (from-to)41-51
Number of pages11
JournalChemical Engineering Journal
Volume335
DOIs
Publication statusPublished - 2018 Mar 1

Keywords

  • Co-electrolysis
  • Electrochemical impedance spectroscopy
  • Reverse water gas shift reaction
  • Solid-oxide cells
  • Syngas production

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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