YCrO3基固体氧化物燃料电池(SOFC)连接材料与LaCrO3基连接材料相比具有更高的化学稳定性,但却难以在空气中致密化烧结.利用溶胶-凝胶工艺在Y0.8Se0.2CrO3-δ的B位掺杂10 mol％的Zn制备Y0.8Sr0.2Cr0.9Zn01O3-δ高活性粉体,在1400℃空气中烧结获得了96.6％的高致密度,并且仍然保持单一正交钙钛矿相结构,远高于同条件下Y0.8 Sr0.2 CrO3-δ的76.4％的烧结致密度.Y08Sr02Cr09Zn01O3-δ烧结样品遵从小极子导电机理,850℃空气中的电导率达到3.7 S·cm-1；热膨胀系数为9.4×10-6K-1,与YSZ相接近,表明Y08Sr02Cr0.9Zn01O3-δ是一种稳定易烧结的适合YSZ基SOFC的新型陶瓷连接材料.
参考文献
| [1] | Allan J. Jacobson .Materials for Solid Oxide Fuel Cells[J].Chemistry of Materials: A Publication of the American Chemistry Society,2010(3):660-674. |
| [2] | Qiang Liu;Xihui Dong;Guoliang Xiao;Fei Zhao;Fanglin Chen .A Novel Electrode Material for Symmetrical SOFCs[J].Advanced Materials,2010(48):5478-5482. |
| [3] | Zhu WZ.;Deevi SC. .Development of interconnect materials for solid oxide fuel cells [Review][J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):227-243. |
| [4] | Fergus JW .Lanthanum chromite-based materials for solid oxide fuel cell interconnects[J].Solid state ionics,2004(1/2):1-15. |
| [5] | 王松林,王泾文,孟广耀.微波辅助Sol-gel法制备La0.7Ca0.3CrO3-δ超细粉体及其烧结性能的研究[J].材料导报,2011(10):88-91. |
| [6] | 程继贵,齐海涛,何海根,高建峰.中温固体氧化物燃料电池新型连接体材料的研制[J].材料热处理学报,2010(12):14-18. |
| [7] | Songlin Wang;Mingfei Liu;Yingchao Dong;Kui Xie;Xingqin Liu;Guangyao Meng .Influence of Cr deficiency on sintering character and properties of SOFC interconnect material La_(0.7)Ca_(0.3)Cr_(1-x)O_(3-δ)[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(10):2607-2616. |
| [8] | Mingfei Liu;Ling zhao;Dehua Dong;Songlin Wang;Juan Diwu;Xingqin Liu;Guangyao Meng .High sintering ability and electrical conductivity of Zn doped La(Ca)CrO_3 based interconnect ceramics for SOFCs[J].Journal of Power Sources,2008(2):451-456. |
| [9] | Xiaoliang Zhou;Feijun Deng;Mingxing Zhu .High performance composite interconnect La_(0.7)Ca_(0.3)CrO_3/20 mol percent ReO_(1.5) doped CeO_2 (Re = Sm, Gd, Y) for solid oxide fuel cells[J].Journal of Power Sources,2007(1):293-299. |
| [10] | Yamamoto T;Itoh H;Mori M et al.Chemical stability between NiO/8YSZ cermet and alkaline-earth metal substituted lanthanum chromite[J].Journal of Power Sources,1996,61:219-222. |
| [11] | Carini G F;Anderson H U;Sparlin D M et al.Electrical conductivity,seebeck coefficient and defect chemistry of Ca-doped YCrO3[J].Solid State Ionics,1991,49:223-231. |
| [12] | Songlin Wang;Bin Lin;Yingchao Dong;Daru Fang;Hanping Ding;Xingqin Liu;Guangyao Meng .Stable, Easily Sintered Ca-zn-doped Ycro_3 As Novel Interconnect Materials For Co-fired Yttrium-stabilized Zirconia-based Solid Oxide Fuel Cells[J].Journal of Power Sources,2009(2):483-488. |
| [13] | Yokokawa H;Sakai N;Kawada T et al.Chemical thermodynamic considerations in sintering of LaCrO3-based perovskites[J].Journal of the Electrochemical Society,1991,138(04):1018-1027. |
| [14] | Tao SW;Irvine JTS .Conductivity studies of dense yttrium-doped BaZrO3 sintered at 1325 degrees C[J].International Journal of Quantum Chemistry,2007(12):3493-3503. |
| [15] | He Wang;Ranran Peng;Xinfeng Wu .Sintering Behavior and Conductivity Study of Yttrium-Doped BaCeO_3-BaZrO_3 Solid Solutions Using ZnO Additives[J].Journal of the American Ceramic Society,2009(11):2623-2629. |
| [16] | Minh N Q;Horne C R;Liu F S.Proceedings of the twenty fifth intersociety energy convention engineering conference[M].American Institute of Chemical Engineers,New York,1990:256. |
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