화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.18, No.12, 660-663, December, 2008
DOI10.3740/MRSK.2008.18.12.660  Export Citation
하이드라진을 이용한 용액환원법에 의한 Ni-GDC 미분말 합성과 전기적 특성
Preparation of Ni-GDC Powders by the Solution Reduction Method Using Hydrazine and Its Electrical Properties
김선중, 김강민, 조평석, 조윤호, 이충용, 박승영, 강윤찬1, 이종흔†
  • 고려대학교 신소재공학부
  • 1건국대학교 화학공학과
Sun-Jung Kim, Kang-Min Kim, Pyeong-Seok Cho, Yoon-Ho Cho, Choong-Yong Lee, Seung-Young Park, Yun Chan Kang1, and Jong-Heun Lee†
  • Department of Materials Science and Engineering, Korea University, Seoul, Korea
  • 1Department of Chemical Engineering, Konkuk University, Seoul, Korea
E-mail:
Ni-GDC (gadolinia-doped ceria) composite powders, the anode material for the application of solid oxide fuel cells, were prepared by a solution reduction method using hydrazine. The distribution of Ni particles in the composite powders was homogeneous. The Ni-GDC powders were sintered at 1400 oC for 2 h and then reduced at 800 oC for 24 h in 3 % H2. The percolation limit of Ni of the sintered composite was 20 vol%, which was significantly lower than these values in the literature (30-35 vol%). The marked decrease of percolation limit is attributed to the small size of the Ni particles and the high degree of dispersion. The hydrazine method suggests a facile chemical route to prepare well-dispersed Ni-GDC composite powders.
Keywords:SOFC;anode;hydrazine reduction;Ni-GDC
  1. Murray EP, Tsai T, Barnett SA, Nature, 400, 649 (1999)
  2. Brandon NP, Skinner S, Steele BCH, Annu. Rev. Mater. Res., 33, 183 (2003)
  3. Huang YH, Dass RI, Xing ZL, Goodenough JB, Science, 312, 254 (2006)
  4. Gorte RJ, Park S, Vohs JM, Wang CH, Adv. Mater., 12(19), 1465 (2000)
  5. Steele BCH, Heinzel A, Nature, 414, 345 (2001)
  6. Jiang SP, Chan SH, J. Mater. Sci., 39(14), 4405 (2004)
  7. Setoguchi T, Okamoto K, Eguchi K, Arai H, J. Electrochem. Soc., 139(10), 2875 (1992)
  8. Koide H, Someya Y, Yoshida T, Maruyama T, Solid State Ion., 132(3-4), 253 (2000)
  9. Lee JH, Moon H, Lee HW, Kim J, Kim JD, Yoon KH, Solid State Ion., 148(1-2), 15 (2002)
  10. Zhu WZ, Deevi SC, Mater. Sci. Eng. A, 362, 228 (2003)
  11. Muramatsu A, Sugimoto T, J. Colloid Interface Sci., 189(1), 167 (1997)
  12. Sugimoto T, Zhou XP, Muramatsu A, J. Colloid Interface Sci., 259(1), 43 (2003)
  13. Choi JY, Lee YK, Yoon SM, Lee HC, Kim BK, Kim JM, Kim KM, Lee JH, J. Am. Ceram. Soc., 88(11), 3020 (2005)
  14. Marinsek M, Zupan K, Macek J, J. Power Source, 86, 383 (2000)
  15. Pratihar SK, Das Sharma A, Basu RN, Maiti HS, J. Power Sources, 129(2), 138 (2004)
  16. Tietz F, Dias FJ, Simwonis D, Stover D, J. Euro. Ceram. Soc., 20, 1023 (2000)