Characterization of Pb2Ru2−xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxide cathode materials for intermediate temperature solid oxide fuel cells
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The Pb2Ru2−xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb2Ru2O7 shows high electrical conductivity of over 2 × 103 S·cm−1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb2Ru1.8Bi0.2O7 showed the lowest polarization resistance of 0.12 Ω·cm2at 800 oC in an air atmosphere.
Abstract
The Pb2Ru2−xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb2Ru2O7 shows high electrical conductivity of over 2 × 103 S·cm−1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb2Ru1.8Bi0.2O7 showed the lowest polarization resistance of 0.12 Ω·cm2at 800 oC in an air atmosphere.
참고문헌 (19)
- N.Q.Minh, , J.Am.Ceram.Soc, 76, pp.563~588 (1993)
- S.C Singhal, , Solid State Ionics, 135, pp.305~313 (2000)
- S.J.Skinner, , Int.J.Inorg.Mater, 3, pp.113~121 (2001)
- K.T.Lee, , Chem.Mater, 18, pp.1621~1626 (2006)
- K.T.Lee, , Solid State Ionics, 178, pp.995~1000 (2007)
- T. Yamamoto, , J.Solid State Chem, 109, pp.372~383 (1994)
- R. Kanno, , J.Solid State Chem, 102, pp.106~114 (1993)
- H. Kobayashi, , J.Solid State Chem, 114, pp.15~23 (1995)
- M. Yasukawa, , Solid State Commun, 126, pp.213~216 (2003)
- B.J.Kennedy, , J.Solid State Chem, 126, pp.261~270 (1996)
- J.-M.Bae, , J.Electroceram, 3, pp.37~46 (1999)
- T. Takeda, , J.Electrochem.Soc, 147, pp.1730~1733 (2000)
- A. Jaiswal, , J. Electrochem. Soc, 152, pp.A787~A790 (2005)
- Z.Zhong, , Electrochem. Solid-State Lett, 9, pp.A215~A219 (2006)
- K.T.Lee, , J.Electrochem.Soc, 152, pp.A197~A204 (2005)
- R.A.Beyerlein, , J.Solid State Chem, 72, pp.2~13 (1988)
- L.-W. Tai, , Solid State Ionics, 76, pp.259~271 (1995)
- M.A. Subramanian, , Prog.Solid St.Chem, 15, pp.55~143 (1983)
- H. Bouwmeester, , J.Solid State Electrochem, 8, pp.599~605 (2004)