Abstract:
본 발명은 원통형 고체산화물 연료전지에서 메시 타입의 크로퍼를 공기극 집전체로 사용해 기존 기술에 적용할 수 있는 원통형 고체산화물 연료전지의 공기극 집전체 에 관한 것이다. 본 발명은 고체산화물 연료전지의 공기극 집전체 소재로서 메시 타입(mesh-type)의 크로퍼(Crofer 22 APU)를 모재로 사용하고, 그 표면에 샌드블라스팅으로 표면처리한 후 (La 0.80 Sr 0.20 )MnO 3-d 를 코팅재료로 하는 코팅용 슬러리를 스프레이 방식으로 코팅하여 형성된 세라믹 코팅층을 질소의 불활성 분위기 또는 질소 및 수소의 환원분위기 하에서 800~1100℃로 열처리한 것을 특징으로 한다. 본 발명은 세라믹 코팅층을 형성함으로써 산화크롬(Cr 2 O 3 )과 같은 스케일의 형성을 억제시켜 고체산화물 연료전지의 우수한 장기 성능 특성을 얻을 수 있는 장점이 있다.
Abstract:
PURPOSE: A method for manufacturing an LSCF/CGO air electrode is provided to improve sinterability by preventing grain growth of LSCF and to prepare air electrode with excellent electrode characteristics. CONSTITUTION: A method for manufacturing an LSCF/CGO air electrode comprises the steps of: mixing La2O3, SrCO3, Co(No3)2·6H2O, and Fe2O3 in a weight mixing ratio of 97.84 : 62.16 : 59.39 : 67.24, pulverizing the mixture, and sintering the mixture at 1050~1200°C for 9~11 hours to synthesize La_0.6Sr_0.4Co_0.2Fe_0.8O_(3-δ)(LSCF) powder of a rhombohedral perovskite; mixing gadolinium-doped ceria(CGO) powder with the LSCF powder in a ratio of 45~55 weight%; and sintering the mixed powder at 1100~1200°C for 4~6 hours to form the air electrode.
Abstract:
PURPOSE: Provided are a fuel electrode supporter type parallel pipe type solid oxide fuel cell stack which can increase remarkably power density, and its preparation method for massive production and the reduction of manufacturing cost. CONSTITUTION: The fuel electrode supporter type parallel pipe type solid oxide fuel cell stack has a composite structure of a cylindrical shape and a flat plate shape comprising both terminal parts of the cross-section of a support pipe is semicircle shaped and the center part between the both terminal parts is flat plate shaped. The solid oxide fuel cell stack comprises a fuel cell(1); and a connection plate(2) comprising a lower connection plate(21) having a flat bottom face connected with a positive stack electrode(3), at least one sheet of middle connection plate(22), and an upper connection plate(23) having a flat top face connected with a negative stack electrode(3').
Abstract:
PURPOSE: Provided are a cylindrical solid oxide fuel battery stack having anode support pattern, which has excellent efficiency, and a method for effectively producing the same. CONSTITUTION: The stack comprises a plurality of anode supporting fuel cells having connectors(1D) which are longitudinally formed at one side of circumference of cylindrical anode(1C) support pipe and protruded outside circumference of cathode(1A), but is not connected with the cathode, wherein the electrolyte layer(1B) consisting of a mixture of 60-95 wt% of organic solvent and 5-40 wt% of YSZ powder, 5-12 wt% of binder per 100 g of YSZ powder, 5-15 cc of plasticizer per 100 g of YSZ, 1-3 cc of homogenizer per 100 g of YSZ powder, and 1-3 cc of dispersing agent per 100 g of YSZ powder, is formed at circumference of cylindrical anode support pipe formed by adding 20-50 vol% of carbon powder as a pore-forming agent, to mixed powder of NiO having 30-50 vol% of Ni and YSZ, and a cathode is coated on circumference of the electrolyte layer; a metal connector plates having surface coated with conductive ceramic layer, which consists of lower plates of connector, medium plates(13M) of connector and one top plate of connector; and electrodes which are connected to the top plate and the lower plates, respectively.
Abstract:
인산형 연료전지 등의 발전용 연료로 사용되는 CO 함량이 1% 미만이 되는 수소 다량가스(Hydrogen rechgas)를 생산하기 위하여 메탄올을 개질연료 및 버너연료로 사용하는 연료로 사용하는 연료개질장치에 관한 것으로 저온 Co-shift 촉매(ICI 52-1)를 이용하여 메탄올/수증기 개질방법에 의하여 연료전지 발전용 연료를 제조하는 연료개질장치 촉매 반응관을 환형 단일 개질관으로 구성하고 개질로의 중앙에 위치시켜 내부 및 외부의 2방향으로 개질관의 하부에 위치한 메탄올 버너로부터 가열된 연소가스를 간접적으로 개질관내부에 충전된 촉매 및 개질연료를 가열시켜 연료전지 발전용 혼합가스를 제조하는 것이다.
Abstract:
A method for fabricating a flat tubular type segment solid oxide fuel cell according to an embodiment of the present invention may include mixing NiO with Sc2O3-CeO2-ZrO2 powder, then adding ethanol to the mixed powder, then adding a zirconia ball, then performing wet ball mill, then performing drying in a dryer after performing the wet ball mill, then forming fine mixed powder, then quantifying the mixed powder, then adding solvent (-terpineol) and a dispersing agent, then performing mixing by using a high-speed centrifugal mixer (planetary Centrifugal Mixer, ARM-310), then mixing a binder (organic binder) (Ethyle Celllulose-cp50) and solvent (-terpineol), then performing mixing by using the high-speed centrifugal mixer, then mixing the mixed powder slurry with the binder, then producing paste by using the high-speed centrifugal mixer, then repeating milling of the paste with a three roll mill, and then forming a fuel electrode from the milled paste by using a screen mask.
Abstract:
The present invention relates to a cathode support composition for a solid oxide fuel cell, a cathode support manufactured using the same and a solid oxide fuel cell including the same. The cathode support composition for a solid oxide fuel cell includes Ni-YSZ cermet and PMMA as a porogen in an optimized size and content to have high porosity, electrical conductivity and strength.