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Preparation of Doped Ceria Electrolyte Films for SOFCs by Spray Coating Method |
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| Authors: | Changsheng Ding Hongfei Lin Kazuhisa Sato Yoshifumi Tsutai Hiromichi Ohtaki Mabito Iguchi |
| Institution: | 1. Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University , Miyagi, Japan dingchsh@rift.mech.tohoku.ac.jp;3. Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University , Miyagi, Japan;4. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Miyagi, Japan;5. Research and Development Unit, Nihon Ceratec Co., Ltd. , Miyagi, Japan |
| Abstract: | Spray coating method is a cost-effective technique suitable for the preparation of uniform and large-area thin films. This article presents findings on the preparation of dense electrolyte thin films by spray coating method. Dense, crack-free Gd-doped CeO2 (GDC) thin films with a thickness of approximately 2 µm were successfully prepared on porous NiO-GDC substrates. The influence of the dispersion of GDC nanopowders in susupension on the microstructure of the thin films was investigated. Results show that agglomeration of GDC nanopowders in suspension resulted in a porous microstructure and a densely packed microstructure was obtained for the film prepared from a well-dispersed suspension. |
| Keywords: | Dense thin films sintering SOFC spray coating |