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Journal of electrochemical science and technology v.9 no.2, 2018년, pp.133 - 140   SCIE
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Sulfur Tolerance Effects on Sr0.92Y0.08Ti0.5Fe0.5O3-δ as an Alternative Anode in Solid Oxide Fuel Cells

Kim, Jun Ho   (School of Chemical Engineering, Chonnam National University  ); Yun, Jeong Woo   (School of Chemical Engineering, Chonnam National University  );
  • 초록

    $Sr_{0.92}Y_{0.08}Ti_{0.5}Fe_{0.5}O_{3-{\delta}}$ (SYTF0.5) is investigated as an alternative anode in $H_2$ fuels containing $H_2S$ (0-200 ppm). Although additional ionic conductivity is introduced by aliovalent substitution of $Ti^{4+}$ by $Fe^{3+}$ in the B-site, the SYTF0.5 has lower electrical conductivity than that of the $Sr_{0.92}Y_{0.08}TiO_{3-{\delta}}$ . Due to the mixed ionic and electronic conductive (MIEC) property exhibited in the SYTF0.5 anode, the electrochemical performance of the SYTF0.5 anode is improved, as well as the sulfur tolerance. The maximum power densities in $H_2$ at $900^{\circ}C$ for the SYT anode and the SYTF0.5 anode were 56.9 and $98.6mW/cm^2$ , respectively. The maximum power density in the SYTF0.5 anode at 200 ppm of $H_2S$ concentration decreased by only 12.9% (86.3 to $75.2mW/cm^2$ ).


  • 주제어

    Sulfur poisoning .   Alternative anode .   Mixed ionic and electronic conductivity .   $Sr_{0.   92}Y_{0.   08}Ti_{0.   5}Fe_{0.   5}O_{3-{\delta}}$ .   Electrochemical oxidation.  

  • 이미지/표/수식 (18)

    • Summary of the activation energies for the total electrical conductivities analyzed with the straight lines ofFig. 4 (b).

    논문관련 이미지

  • 참고문헌 (31)

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 저자의 다른 논문

  • Yun, Jeong Woo (3)

    1. 2015 "Ce0.8Sm0.2O2 Sol-gel Modification on La0.8Sr0.2Mn0.8Cu0.2O3 Cathode for Intermediate Temperature Solid Oxide Fuel Cell" 마이크로전자 및 패키징 학회지 = Journal of the Microelectronics and Packaging Society 22 (4): 77~82    
    2. 2016 "Characteristics of Cr(III)-based Conversion Coating Solution to Apply Aluminum Alloys for Improving Anti-corrosion Properties" 마이크로전자 및 패키징 학회지 = Journal of the Microelectronics and Packaging Society 23 (4): 79~85    
    3. 2016 "Characteristics of Sr0.92Y0.08TiO3-δ Anode in Humidified MethaneFuel for Intermediate Temperature Solid Oxide Fuel Cells" Journal of electrochemical science and technology 7 (1): 33~40    

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