Abstract:
A composite sealing material for a flat solid oxide fuel cell, and a method for preparing the composite sealing material are provided to improve the heat cycle stability without the deterioration of a stack by increasing the fracture toughness of glass. A composite sealing material for a flat solid oxide fuel cell comprises a glass matrix; and 5-50 vol% of an alpha-alumina fibrous reinforcing material which has an average crystal particle size of 0.2 micrometers or more and an aspect ratio of 10-100 and is contained in the glass matrix. Preferably the composite sealing material comprises further a granular alpha-alumina powder; and/or any one metal powder selected from silver(Ag), palladium(Pd), gold(Au), platinum(Pt), nickel(Ni), Fe-Ni alloy and molybdenum(Mo).
Abstract:
본 발명은 고온 전기화학소자 복합분말 및 이의 제조방법에 관한 것으로서, 본 발명에 따른 Ni-CeZrO 2 복합분말을 고온 전기화학소자의 연료극으로 사용할 경우 높은 전환 효율 및 탄소침작을 억제하여 장기간 사용으로 발생되는 성능저하의 문제점을 해결할 수 있다.
Abstract:
PURPOSE: An anode-supported solid oxide fuel cell and a manufacturing method thereof are provided to secure the excellent structural stability, and to improve the thermo-mechanical stability of a free-standing membrane structure. CONSTITUTION: An anode-supported solid oxide fuel cell comprises the following: a porous anode supporter; a nanofunctional fuel electrode functional layer formed by a vacuum evaporation process, including a pore with the size smaller than a pore on the porous anode supporter; and an electrolyte thin film with the thickness bigger than the pore size of the nanofunctional fuel electrode functional layer. A ceramics included in the fuel electrode functional layer forms a skeleton for the fuel cell.
Abstract:
PURPOSE: A method for manufacturing a metal oxide thin film structure using a metal oxide sol is provided to facilitate the control of a fine structure without expensive equipment or starting materials, and to obtain a stable phase through a low-temperature process. CONSTITUTION: A method for preparing a metal oxide sol comprises (i) preparing a solution containing metal oxide, the metal oxide is selected from the group consisting of ziroconium oxide, cerium oxide, lanthanum gallate, barium cerate, barium zirconate, bismuth oxide, and their doping phase; and (ii) dispersing the same or heterogeneous nanopowder of metal oxide in the metal oxide solution.