전사지를 이용한 다전지식 평관형 고체산화물 연료전지 제작 및 셀 특성 = Fabrication and Cell Properties of Flattened Tube Segmented-in-Series Solid Oxide Fuel Cell-Stack Using Decalcomania Paper

다국어 초록 (Multilingual Abstract)

In the segmented-in-series solid-oxide fuel cells (SIS-SOFCs), fabrication techniques which use decalcomania paper have many advantages, i.e., an increased active area of the electrode; better interfacial adhesion property between the anode, electrolyte and cathode; and improved layer thickness uniformity. In this work, a cell-stack was fabricated on porous ceramic flattened tube supports using decalcomania paper, which consists of an anode, electrolyte, and a cathode. The anode layer was $40{\mu}m$ thick, and was porous. The electrolyte layers exhibited a uniform thickness of about $20{\mu}m$ with a dense structure. Interfacial adhesion was improved due to the dense structure. The cathode layers was $30{\mu}m$ thick with porous structure, good adhesion to the electrolyte. The ohmic resistance levels at 800, 750 and $700^{\circ}C$ were measured, showing values of 1.49, 1.58 and $1.65{\Omega}{\cdot}cm^2$, respectively. The polarization resistances at 800, 750 and $700^{\circ}C$ were measured to be 1.63, 2.61 and $4.17cm^2$, respectively. These lower resistance values originated from the excellent interfacial adhesion between the anode, electrolyte and cathode. In a two-cell-stack SOFC, open-circuit voltages(OCVs) of 1.915, 1.942 and 1.957 V and maximum power densities(MPD) of 289.9, 276.1 and $220.4mW/cm^2$ were measured at 800, 750 and $700^{\circ}C$, respectively. The proposed fabrication technique using decalcomania paper was shown to be feasible for the easy fabrication of segmented-in-series flattened tube SOFCs.

참고문헌 (Reference)

1 T. S. Lai, 147 : 85-, 2005

2 Y. Bai, 195 : 3882-, 2010

3 M. R. Pillai, 163 : 960-, 2007

4 T. S. Lai, 164 : 742-, 2007

5 N. M. Sammes, 145 : 428-, 2005

6 S. C. Singhal, 152 : 405-, 2002

7 G. A. Tompsett, 86 : 376-, 2000

8 T. Fukui, 125 : 17-, 2004

9 안용태, "전사지를 이용 적층한 셀 구조 및 연료극 기능층 형성에 따른 출력 특성" 한국재료학회 22 (22): 626-630, 2012

10 이미재, "전사법을 이용하여 제조한 SOFC 단전지의 특성 분석" 한국세라믹학회 48 (48): 520-524, 2011

11 윤의진, "세그먼트 관형 SOFC의 제작 및 특성 평가" 한국화학공학회 50 (50): 562-566, 2012

12 박성태, "고체산화물연료전지 연결재용 La_0.7Ca_0.3Cr_0.9Co_0.1O_(3-δ) 조성계에 Ca Source 변화에 따른 소결 및 전기적 특성에 관한 연구" 한국세라믹학회 48 (48): 246-250, 2011

13 조남웅, "Ag 집전체를 적용한 평판형 SOFC 단전지" 한국세라믹학회 44 (44): 720-726, 2007