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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2510-2519.DOI: 10.16552/j.cnki.issn1001-1625.2026.0079

• 功能材料 • 上一篇    下一篇

以低浓度甲烷为燃料的固体氧化物燃料电池的制备及性能

朱丽华(), 田倩文, 程思懿, 徐锋(), 李佳哲, 陈希叶   

  1. 黑龙江科技大学安全工程学院,哈尔滨 150022
  • 收稿日期:2026-01-21 修订日期:2026-03-01 出版日期:2026-07-15 发布日期:2026-08-13
  • 通信作者: 徐 锋,博士,教授。E-mail:xufeng79_79@163.com
  • 作者简介:朱丽华(1979—),女,博士,教授。主要从事瓦斯燃料电池等方面的研究。E-mail:zhulihua79@163.com
  • 基金资助:
    黑龙江省自然科学基金(LH2022E107)

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 Published:2026-07-15 Online:2026-08-13

摘要:

固体氧化物燃料电池可实现低浓度甲烷的高效转化,具有安全、环保等多重价值。本文在利用溶胶凝胶法合成阳极材料La0.3Sr0.7Fe0.7Ti0.3O3(LSFT)、乙二胺四乙酸钙钠(EDTA-CA)联合络合法合成电解质材料Sm0.2Ce0.8O1.9(SDC)和阴极材料La0.6Sr0.4Co0.2Fe0.8O3(LSCF)的基础上,制备了电解质支撑型固体氧化物燃料电池LSFT/SDC/LSCF,并以低浓度甲烷为燃料,在650~800 ℃测试了电池的电化学性能。结果表明:合成的LSFT和LSCF为较纯净的立方钙钛矿结构,且孔隙发育,SDC为结构致密的立方萤石结构;制备的电池LSFT/SDC/LSCF可实现电-氢联产,燃料气中甲烷浓度越高,电池的电化学性能越好,而且电池性能受温度的影响较为显著。以体积分数为30%的低浓度甲烷为燃料气,800 ℃时电池极化阻抗为0.15 Ω·cm2,甲烷转化率为30.4%,氢气选择性为45.8%。研究结果可为基于固体氧化物燃料电池的低浓度甲烷,尤其是低浓度煤矿瓦斯利用的深入研究提供参考。

关键词: 固体氧化物燃料电池, 低浓度甲烷, 电解质支撑, LSFT, SDC, LSCF

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

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