Abstract:
PURPOSE: A fuel electrode support for solid oxide fuel cell, a solid oxide fuel cell, and a manufacturing method thereof are provided to freely adjust size of pores by using sphere shaped various sized pore precursors and to maintain structural stability of the supporter. CONSTITUTION: A manufacturing method of a fuel electrode support for solid oxide fuel cell comprises the following steps: a step of preparing a mixture or slurry which includes powder for the fuel electrode support and spherical pore precursor; a step of molding the fuel electrode support by using the mixture or the slurry; and a step of forming a porous fuel electrode support which includes spherical shaped pores by eliminating the spherical shaped pore precursors.
Abstract:
PURPOSE: A manufacturing method of an electrode device is provided to restrain structural defect of each composing layer, the delamination between the composing layers or interface defect. CONSTITUTION: A manufacturing method of an electrode device comprises a step of adding sintering additive to an anode supporter and/or an electrolyte, and sintering the mixture. The electrode device comprises anode supporter including ABO_3 based proton conducting ceramic in chemical formula: Ba(Zr_(1-x-y)Y_xM_y)O_(3-δ), and electrolyte. In chemical formula, M is one selected from a group consisting of transition metals, Cu and Zn, 0
Abstract:
본 발명은 a) 연료극 지지체; b) 상기 연료극 지지체 상에 형성된 고체 전해질층; 및 c) 상기 고체 전해질층 상에 형성된 나노 구조 복합체 공기극층을 포함하며, 상기 복합체 공기극층은 전극 물질과 전해질 물질이 분자 단위로 혼합되어 있으면서, 서로 반응 또는 고용되어 단일 물질을 형성하지는 않는 것을 특징으로 하는 고체산화물 연료전지 및 이의 제조방법에 관한 것으로서 저온작동이 가능하고 고성능을 가지며, 안정성이 우수한 연료전지를 제공할 수 있다.
Abstract:
The present invention relates to a proton conducting solid oxide fuel cell characterized by forming an anode and an upper electrolyte both having a similar sintering rate, and a lower electrolyte having a relatively slow sintering rate into a pseudo-symmetric laminated structure, and co-firing the formed structure to improve density of the lower electrolyte. According to the present invention, an interfacial defect caused by the asymmetry of sintering shrinkage behavior of a conventional fuel electrode layer and an electrolyte layer is preventable, since the electrolyte adjacent to the anode is formed in a dense structure, chemical stability for CO_2 gas is able to be provided, and polarization resistance of an air electrode is reducible, thereby being able to provide and commercialize the proton conducting solid oxide fuel cell having a high output.
Abstract:
본 발명은 고체산화물 연료전지용 연료극 지지체와 이를 포함하는 고체산화물 연료전지 및 그 제조방법에 관한 것으로서, 본 발명의 고체산화물 연료전지용 연료극 지지체의 제조방법은 (a) 연료극 지지체 구성 분말 및 구형 기공 전구체를 포함하는 혼합제 또는 슬러리를 준비하는 단계, (b) 상기 혼합제 또는 슬러리를 이용하여 연료극 지지체를 성형하는 단계 및 (c) 상기 연료극 지지체를 고온 열처리하여 상기 구형 기공 전구체를 제거하여 구형의 기공을 포함하는 다공성 연료극 지지체를 형성하는 단계를 포함하고, 단계 (b)는, (b') 상기 혼합제 또는 슬러리를 이용하여 분무 건조법, 동결 건조법 또는 액상 응결 공정으로 과립을 형성하고, 이를 이용하여 가압 몰딩법으로 상기 연료극 지지체를 성형하는 단계이거나, (b'') 상기 혼합제 또는 슬러리를 이용하여 테이프 캐스팅법으로 상기 연료극 지지체를 성형하는 단계인 것일 수 있다.
Abstract:
PURPOSE: A solid oxide fuel cell is provided to overcome a difference of thermal expansion coefficient with an electrolytic material and to improve structural stability at SOFC operation temperature by forming a nanostructured electrolyte-air electrode composite thin layer with high catalytic activity which is mixed to molecular size by using a thin film deposition. CONSTITUTION: A solid oxide fuel cell comprises a fuel electrode support, a solid electrolyte layer (10) formed on the fuel electrode support, and a nano structure composite air electrode layer(20) formed on the solid electrolyte layer. The nanostructured composite air electrode layer comprises an electrode material and an electrolyte material which are mixed to a molecular size but does not forms a single phase by the materials being not reacted or solved to each other. The ratio of the electrode material and the electrolyte material in the nanostructured composite air electrode layer is 2:8-8:2. A particle size of the composite air electrode layer is 100 nm or less.