Preparation and Characterization of Ce0.9Gd0.1O1.95 Electrolyte Films by Spray Coating Process
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概要
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Anode-supported solid oxide fuel cells (SOFCs) have attracted extensive attention due to low operating temperatures and high electrical performance. In the anodesupported SOFCs, the key is to prepare dense electrolyte films on porous anode substrates. In this study, a simple and cost-effective technique, spray coating process, is introduced to prepare dense electrolyte films. In the spray coating process, the preparation of powder suspension is very important, which affects the quality of resulting electrolyte films. A well-dispersed Ce0.9Gd0.1O1.95 (GDC) suspension were prepared in isopropyl alcohol by adding 2 mass% surfactant. Using the well-dispersed GDC suspension, dense and crack-free GDC electrolyte films with thickness of 2-10 µm were successfully prepared on porous NiO-GDC anode substrates by the spray coating process. In order to evaluate the GDC electrolyte film as electrolyte for SOFC, anode-supported SOFC was fabricated and its electrical performance was measured. Results show that the GDC electrolyte film prepared by the spray coating process can be used as electrolyte of SOFC. The GDC electrolyte film is well adhered to the anode substrate, and there is no crack and delamination observed after electrical performance test.
著者
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HASHIDA Toshiyuki
Fracture Research Institute, Tohoku University
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LIN Hongfei
Fracture and Reliability Research Institute, Tohoku University
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DING Changsheng
Fracture and Reliability Research Institute, Tohoku University
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SATO Kazuhisa
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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TSUTAI Yoshifumi
Research and Development Unit, Nihon Ceratec Co., Ltd.
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IGUCHI Mabito
Research and Development Unit, Nihon Ceratec Co., Ltd.
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Hashida Toshiyuki
Fracture And Reliability Res. Inst. Graduate School Of Engineering Tohoku Univ.
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Sato Kazuhisa
Institute For Materials Research Tohoku University
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