한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제38권4호
  • /
  • Pages.325-330
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  • 2001
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

${Nd_{1-x}}{Sr_x}{Ga_{1-x}}{Mg_x}{O_{3-\delta}$ 고체전해질의 복소임피던스 특성과 전기전도도

Complex Impedance Characteristics and Electrical Conductivity of ${Nd_{1-x}}{Sr_x}{Ga_{1-x}}{Mg_x}{O_{3-\delta}$ Electrolytes

  • 유광수 (서울시립대학교 재료공학과) ;
  • ;
  • Allan J. Jacobson
  • 발행 : 2001.04.01
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초록

고상반응법으로 이론 밀도의 약 97%의 소결 밀도를 갖는 N $d_{1-x}$S $r_{x}$G $a_{1-x}$M $g_{x}$ $O_{3{\delta}}$(x=0, 0.03, 0.07, 0.1) 고체전해질을 제조하였다. X선 회절 분석 결과, x=0.03일 때의 X선 회절도는 순수한 NdGa $O_3$와 같았으나, x=0.07, 0.1일 때에는 불순물이 나타났다. 교류 복소임피던스는 4$50^{\circ}C$~90$0^{\circ}C$의 온도 범위에서 공기 중에서 측정하였으며, 각 조성에 대하여 상호 비교 분석하기 위하여 복소비저항 스펙트럼으로 변환하여 해석하였다. 전기전도도는 N $d_{0.93}$S $r_{0.07}$G $a_{0.93}$M $g_{0.07}$ $O_{0.97}$(x=0.07) 시편이 90$0^{\circ}C$에서 6$\times$$10^{-3}$ S$cm^{-1}$ /로 가장 우수하였으며, 활성화 에너지는 저온 영역에서는 1 eV, 고온 영역에서는 0.74 eV이었다.다.

키워드

참고문헌

  1. Physics Today Fuel Cells: History, Operation and Applications D. L. Douglas;H. A. Liebhafsky
  2. Fuel Cell Description Program Fuel Cell Descriptions U.S. Department of Defense
  3. Japanese R&D Trend Analysis, Report No.11: Fuel Cell Materials KRI International
  4. High Temperature Electrochemistry: Ceramics and Metals, 17th Riso International Symposium on Materials Science Status of Solid Oxide Fuel Cell Technology S. C. Singhal
  5. Solid State Ionics v.99 Electrode Supported Solid Oxide Fuel Cells: Electrolyte Films Prepared by DC Magnetron Sputtering P. K. Srivastava;T. Quach;Y. Y. Duan;R. Donelson;S. P. Jiang;F. T. Ciachi;S. P. S. Badwal
  6. MRS Proceedings v.496 A Composite Electrolyte for an SOFC consisting of a Ceria Sheet and a Zirconia Film Deposited by the Sol-gel Method R. Chiba;F. Yoshimura;J. Yamaki
  7. J. Electrochem. Soc. v.145 no.9 Intermediate Temperature Solid Oxide Fuel Cells Using a New LaGaO₃Based Oxide Ion Conductor T. Ishihara;M. Honda;T. Shibayaki;H. Minami;H. Nishguchi;Y. Takita
  8. J. Electrochem. Soc. v.143 no.5 Superior Oxygen Ion Conductivity of Lathanium Gallate Doped with Strontium and Magnesium P-N. Huang;A. Petric
  9. J. Am. Ceram. Soc. v.79 no.4 Sol-gel Synthesis of a New Oxide-ion Conductor Sr- and Mg-doped LaGaO₃ Perovskite K. Huang;M. Feng;J. B. Goodenough
  10. Extended Abstract of the 12th Int'l Conf. on Solid State Ionics Electrical Conductivity and Mechanical Properties of Alumina-dispersed Doped Lathanium Gallates I. Yasuda;Y. Matsuzaki;T. Yamakawa;T. Koyama
  11. Proceedings of the 3rd Int'l Symposium on lonic and Mixed Conducting Ceramics(Electrochem. Soc.) v.97;24 Conductivity of Praseodymium Oxide and Praseodymium Gallate P. Huang;A. Pertric;W. Gong
  12. Solid State Ionics v.92 Oxygen Conductivity of Nd(Sr/Ca)Ga(Mg)$O_{3-{\delta}}$ Perovskites A. Petric;P. Huang
  13. MRS Proceedings v.496 Mixed Ionic-electronic Conducting in Ni Doped Lathanium Gallate Perovskites N. J. Long;H. L. Tuller
  14. Acta. Cryst. v.10 Crystallographic Studies of Perovskite-like Compounds. Ⅳ. Rare Earth Scandates, Vanadates, Galliates, Orthochromites S. Geller
  15. Solid State Phys. v.3 Relations between the Concentrations of Imperfections in Crystalline Solids F. A. Kroger;H. J. Vink
  16. Solid State Ionics v.77 Comparison of Calciumdoped Barium Cerate Solid Electrolytes Prepared by Different Routes S. D. Flint;R. C. T. Slade
  17. Nature v.404 Designing Fast Oxide-ion Conductors Based on La₂Mo₂$O_9$ P. Lacorre;F. Goutenoire;O. Bohnke;R. Retoux