http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고체산화물연료전지용 대면적 단위전지 제조특성 및 성능평가
신유철(Shin, Y.C.),김영미(Kim, Y.M.),오익현(Oh, I.H.),김호성(Kim, H.S.),이무성(Lee, M.S.),현상훈(Hyun, S.H.) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.05
Solid oxide fuel cell(SOFC) is an electrochemical energy conversion system with high efficiency and low-emission of pollution. In order to reduce the operating temperature of SOFC system under 800?C, the thickness reduction of YSZ electrolyte to be as thin as possible, e.g., less than 10 {mu}m are considered with the microstructure control and optimum design of unit cell. Methods for reducing the thickness of YSZ electrolyte have been investigated in coin cell. Moreover, a large unit cell(8cm{times}8cm) for SOFC was fabricated using an anode-supported electrolyte assembly with a thinner electrolyte layer, which was prepared by a tape casting method with a co-sintering technique. we studied the design factors such as active layer, electrolyte thickness, cathode composition, etc,. by the coin type of unit cell ahead of the fabrication process of a large unit cell and also reviewed about the evaluation technique of a large size unit cell such as interconnect design, sealing materials and current collector and so forth. Electrochemical evaluations of the unit cells, including measurements such as power density and impedance, were performed and analyzed. Maximum power density and polarization impedance of coin cell were 0.34W/cm² and 0.45{Omega}cm² at 800?C, respectively. However, Maxium power density of a large unit cell(5cm{times}5cm) decreased to 0.21W/cm² at 800?C due to the increase of ohmic resistance. However, It was found that the potential value of a large unit cell loaded by 0.22A/cm² showed 0.76V at 100hrs without the degradation of unit cell.