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세그먼트 SOFC 관형 세라믹 지지체의 제작 및 특성 평가
윤의진,이종원,이승복,임탁형,박석주,송락현,신동렬,한규승 한국수소및신에너지학회 2010 한국수소 및 신에너지학회논문집 Vol.21 No.3
In this study, we fabricated tubular ceramic support for segmented-in-series solid oxide fuel cell (SOFC)by using CSZ(CaO-stabilized ZrO2) as main material and activated carbon as pore former. Thermal expansion properties of ceramic support with different amounts of activated carbon were analyzed by using dilatometer to decide a suitable sintering temperature. The tubular ceramic supports with different amounts of activated carbon (5, 10, 15wt.%) were fabricated by the extrusion technique. After sintering at 1100℃ and 1400℃for 5h., cross section and surface morphology of tubular ceramic support were analyzed by using SEM image. Also, the porosity, mechanical property, gas permeability of tubular ceramic supports was measured. Based on these results, we established the suitable fabrication technique of tubular ceramic support for segmented-in-series SOFC.
보문 : 에너지/환경·신재생에너지·폐가물처리/자원화기술 ; 세그먼트 관형 SOFC의 제작 및 특성 평가
윤의진 ( Ui Jin Yun ),이종원 ( Jong Won Lee ),이승복 ( Seung Bok Lee ),임탁형 ( Tak Hyoung Lim ),박석주 ( Seok Joo Park ),송락현 ( Rak Hyun Song ),신동렬 ( Dong Ryul Shin ),한규승 ( Kyoo Seung Han ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.3
본 논문에서는 세그먼트 관형 고체산화물 연료전지(SOFC)의 설계 및 제작과 특성 분석을 다루고 있다. 관형 세라믹 지지체는 압출 공정을 통하여 제작하였으며, NiO-YSZ 연료극과 YSZ 전해질은 담금 코팅법을 통해 세라믹 지지체 에 코팅하였다. 코팅된 세라믹 지지체를 1,350˚C에서 5시간 동안 열처리하였으며, 10 μm 미만의 치밀하고, 균열이 없는 YSZ 전해질 층을 얻을 수 있었다. 또한 열처리된 세라믹 지지체에 LSM-YSZ/LSM/LSCF로 구성된 다층 구조 공기극을 담금법으로 코팅하여 1,150˚C에서 열처리하였다. 세라믹 관형 지지체에 코팅된 세그먼트 SOFC 셀은 Ag-glass 연결재를 사용하여 전기적으로 직렬 연결하였으며, 수소연료 유량과 운전 온도에 따른 세그먼트 SOFC의 성능 변화를 측정하였다. A novel design of tubular segmented-in-series (SIS) solid oxide fuel cell (SOFC) sub module was presented in this paper. The tubular ceramic support was fabricated by the extrusion technique. The NiO-YSZ anode and the yttria-stabilized zirconia (YSZ) electrolyte were deposited onto the ceramic support by dip coating method. After sintering at 1350˚C for 5 h, a dense and crack-free YSZ film was successfully fabricated. Also, the multi-layered cathode composed of LSM-YSZ composite, LSM and LSCF were coated onto the sintered ceramic support by dip coating method and sintered at 1150˚C. The performance of the tubular SIS SOFC cell and sub module electrically connected by the Ag-glass interconnect was measured and analysed with different fuel flow and operating temperature.