Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (8): 1376-1384.DOI: 10.1016/S1872-2067(14)60137-6

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Gadolinia-doped ceria barrier layer produced by sputtering and annealing for anode-supported solid oxide fuel cells

Weiming Wua,b, Zhongbo Liua,b, Zhe Zhaoa, Xiaomin Zhanga,b, Dingrong Oua, Baofeng Tua, Da'an Cuia, Mojie Chenga   

  1. a. Division of Fuel Cells, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-28 Revised:2014-05-09 Online:2014-08-01 Published:2014-08-05
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program, 2010CB732302, 2012CB215500), the National High Technology Research and Development Program of China (863 Program, 2011AA050704), and the National Natural Science Foundation of China (21376238, 21306189, 51101146).

Abstract:

We prepared gadolinia-doped ceria (GDC) barrier layers by sputtering and annealing at various temperatures. We then investigated the effects of the GDC barrier layers on the performance of anode-supported solid oxide fuel cells. Sputtering at 200 ℃ readily produced a uniform, thin layer of cubic GDC. Sputtering and annealing at 900-1100 ℃ formed uniform, thin, dense films, which effectively prevented the reaction between the yttria-stabilized zirconia electrolyte and the Ba0.5Sr0.5Co0.8Fe0.2O3-δ cathode. The single cells assembled with the thin, dense GDC barrier layers sputtered at 200 ℃ and annealed at 900-1000 ℃ exhibited excellent electrochemical performance.

Key words: Solid oxide fuel cell, Rare earth metal oxide, Gadolinia-doped ceria, Barrier layer, Sputtering, Annealing