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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2026, Vol. 45 ›› Issue (7): 2510-2519.DOI: 10.16552/j.cnki.issn1001-1625.2026.0079

• Functional Materials • Previous Articles     Next Articles

Preparation and Performance of Solid Oxide Fuel Cells Using Low-Concentration Methane as Fuel

ZHU Lihua(), TIAN Qianwen, CHENG Siyi, XU Feng(), LI Jiazhe, CHEN Xiye   

  1. School of Safety Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China
  • Received:2026-01-21 Revised:2026-03-01 Online:2026-07-15 Published:2026-08-13
  • Contact: XU Feng

Abstract:

Solid oxide fuel cells can achieve clean and efficient conversion of low-concentration methane, and they also possess multiple values such as safety, resource utilization, and environmental protection. Based on the synthesis of anode material La0.3Sr0.7Fe0.7Ti0.3O3 (LSFT) by sol-gel method, electrolyte material Sm0.2Ce0.8O1.9 (SDC) and cathode material La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) by the combined calcium disodium edetate (EDTA-CA) complexation method, an electrolyte supported solid oxide fuel cell LSFT/SDC/LSCF was prepared. The electrochemical performance of the cell was tested using low-concentration methane as the fuel within the temperature range of 650 ℃ to 800 ℃. The results show that the synthesized LSFT and LSCF have a relatively pure cubic perovskite structure with developed pores, while SDC has a dense cubic fluorite structure. The prepared cell LSFT/SDC/LSCF can achieve the integration of electricity and hydrogen production. The higher the concentration of methane in the fuel gas is, the better the electrochemical performance of the cell is. Moreover, the performance of the cell is significantly affected by temperature. When using a low-concentration methane (with a volume concentration of 30%) as the fuel gas, the polarization impedance of the cell at 800 ℃ is 0.15 Ω·cm2, the methane conversion is 30.4%, and the hydrogen selectivity is 45.8%. The research results can provide a reference for in-depth studies on low-concentration methane, especially the utilization of low-concentration coal mine gas based on solid oxide fuel cells.

Key words: solid oxide fuel cell, low-concentration methane, electrolyte support, LSFT, SDC, LSCF

CLC Number: