KANG Y J, CHOI G M. The effect of alumina and Cu addition on the electrical properties and the SOFC performance of Gd-doped CeO2 electrolyte [J]. Solid State Ionics, 2009, 180: 886-887. [2] RAJENDER R, KONDAKINDI, KARAN K. Characterization of Fe- and Mn-doped GDC for low-temperature processing of solid oxide fuel cells [J]. Mater Chem Phys, 2009, 115: 728-729. [3] FU Y P, CHEN S H, HUANG J. Preparation and characterization of Ce0.8M0.2O2-δ (M = Y, Gd, Sm, Nd, La) solid electrolyte materials for solid oxide fuel cells [J]. Int J Hydrogen Energy, 2010, 35: 745-746. [4] LEE D S, KIM W S, CHOI S H, et al. Characterization of ZrO2 co-doped with Sc2O3 and CeO2 electrolyte for the application of intermediate temperature SOFCs [J]. Solid State Ionics, 2003, 176: 33-35. [5] WRIGHT G J, YEOMANS J A. Three-step sintering of constrained yttria stabilized zirconia layers and its effect on microstructure and gas permeance [J]. J Eur Ceram Soc, 2009, 29: 1933-1936. [6] ZHENG Y F, SHI Y M, GU H T, et al. La and Ca co-doped ceria-based electrolyte materials for IT-SOFCs [J]. Mater Res Bull, 2009, 44: 1717-1720. [7] LI B, LIU Y Y, WEI X, et al. Electrical properties of ceria co-doped with Sm3+ and Nd3+ [J]. J Power Source, 2010, 195: 969-971. [8] WANG Z W, CHENG M J, DONG Y L, et al. Anode-supported SOFC with 1Ce10ScZr modified cathode/electrolyte interface [J]. J Power Source, 2006, 156: 306. [9] AHN J S, OMAR S, YOON H, et al. Performance of anode-supported solid oxide fuel cell using novel ceria electrolyte [J]. J Power Source, 2010, 195: 2131-2134. [10] TADAKO S K, PORFIRIO T C, MUCCILLO R, et al. Synthesis, sintering and impedance spectroscopy of 8mol% ytrria-doped ceria solid electrolyte [J]. J Power Source, 2004, 130: 15-16. [11] ZHANG T S, MA J, HUANG H T, et al. Effects of dopant concentration and aging on the electrical properties of Y-doped ceria electrolytes [J]. Solid State Science, 2003, 5: 1508-1510. [12] XIA C R, LIU M L. Low-temperature SOFCs based on Gd0.1Ce0.9O1.95 fabricated by dry pressing [J]. Solid State Ionics, 2001, 144: 249-250. [13] SHA X Q, Lü Z, HUANG X Q, et al. Study on La and Y co-doped ceria-based electrolyte materials [J]. J Alloys Compd, 2007, 428: 59-61. [14] GUAN X F, ZHOU H P, WANG Y N. Preparation and properties of Gd3+ and Y3+ co-doped ceria-based electrolytes for intermediate temperature solid oxide fuel cells [J]. J Alloys Compd, 2008, 464: 310-316. [15] WANG F Y, CHEN S Y, CHENG S F. Gd3+ and Sm3+ co-doped ceria based electrolytes for intermediate temperature solid fuel cells [J]. Electrochem Commun, 2004, 6: 745-747. [16] KILNER J A, BROOK R J. A study of oxygen ion conductivity in doped nonstoichiometric oxides [J]. Solid State Ionics, 1982, 6: 237-252. [17] OMAR S, WACHSMAN E D, JACOB L, et al. Nino crystal structure-ionic conductivity relationships in doped ceria systems [J]. J Am Ceram Soc, 2009, 92: 2674-2682.