Abstract:
The present invention relates to a cathode catalyst for a lithium-air battery, a manufacturing method thereof, and a lithium-air battery comprising the same and, in particular, to a cathode catalyst capable of improving the storing capacity of a battery for charging and discharging electricity and increasing the cycle lifetime of charging and discharging electricity, a method thereof and a lithium-air battery comprising the same. The cathode catalyst has a layered perovskite structure and includes lanthanum and nickel oxide. A cathode for a lithium-air battery is produced by using the cathode catalyst including the layered perovskite and the lithium-air battery is provided by using the cathode. The storing capacity of a lithium-air battery for charging and discharging electricity can be increased and the cycle lifetime of charging and discharging electricity can be improved. [Reference numerals] (AA) Example 2;(BB) Example 1;(CC) Comparative example 2
Abstract:
PURPOSE: A tubular solid oxide fuel cell is provided to facilitate series connection of a solid oxide fuel cell, and to have uniform fuel flux by not inserting a current collector, thereby obtaining uniform and excellent performance. CONSTITUTION: A tubular solid oxide fuel cell(100) comprises a cylindrical fuel electrode support; an electrolyte layer(130) formed on the outer side of the cylindrical fuel cell support; and an air electrode(120) formed on the electrolyte layer; a current collector(110) which includes silver-glass paste coating layer formed on the surface of the inlet and the outlet of the cylindrical fuel electrode support and a metal-mesh and conductive metal-wire winded around the coating layer. The conducive metal is one or a mixture of two or more selected from Ag, Au, Pt, Ni, Co, W, Ti, Cu, Pd, Mn, Mo, and Si.
Abstract:
PURPOSE: A manufacturing method of a fuel electrode support is provided to obtain a fuel electrode support with excellent porosity, electric conductivity, mechanical strength, and gas permeability. CONSTITUTION: A manufacturing method of a fuel electrode support comprises: a step of mixing an activated carbon or carbon black to a Ni/8YSZ cement and adding a solvent to the same to prepare a slurry and uniformizing the slurry by a ball-milling; a step of drying and powderizing the mixture; a step of adding a binder, plasticizer, lubricant, and distilled water, and milling the mixture to manufacture a paste; a step of extruding the paste to manufacture a fuel electrode support; and a step of heat-treating and pre-sintering the fuel electrode support.
Abstract:
PURPOSE: A manufacturing method of a fuel electrode support is provided to prevent the fracture of a fuel electrode support by decomposing components by a pre-sintering process. CONSTITUTION: A manufacturing method of a fuel electrode support comprises: a step of ball milling a zirconia-based ceramic, activated charcoal, binder, plasticizer, lubricant, and distilled water and mixing and pulverizing the materials; a step of adding a binder and solvent to the pulverized mixture, milling the added mixture, and preparing a paste for manufacturing a fuel electrode support; a step of extruding the paste and manufacturing a fuel electrode support for a solid oxide fuel cell; and a step of heat-treating the fuel electrode support and pre-sintering the fuel electrode.
Abstract:
PURPOSE: A direct carbon fuel cell including cylindrical anode supporter and a manufacturing method thereof are provided to maximize contact of fuel electrode with electrolyte. CONSTITUTION: A direct carbon fuel cell including cylindrical anode supporter uses unit cells(100). The unit cell comprises a cylindrical anode supporter, an electrolyte film formed on the exterior of cylindrical anode supporter, and air film formed on the electrode film. [Reference numerals] (AA) Inflow of oxidant; (BB) Outflow of CO2 and non-reactive oxidant
Abstract:
PURPOSE: A manufacturing method of ceramic connector powder for solid oxide fuel cells and a connector thereof are provided to manufacture nano-sized ceramic connectors. CONSTITUTION: A manufacturing method of ceramic connector powder for solid oxide fuel cells comprises the following steps: using nitrate which includes lanthanum, calcium and chrome as a starting material, and dissolving the starting material in distilled water; obtaining sol by adding glycine to the metal nitrate solution as a fuel substance; manufacturing gel by evaporating water by heating the sol solution; thermal decomposing the gel by continuous heating; and heat treating the thermal decomposed gel at high temperature under a contact with dry air. The fuel substance of fuel at 1.2-2 times molar ratio is added based on the metal nitrate. The thermal processing step is operated at 1000 deg. Celsius for 5 hours. The ceramic connector for solid oxide fuel cells has a perovskite structure. [Reference numerals] (AA) Practical example 4; (BB) Practical example 5; (CC) Practical example 6; (DD) Conventional example 1
Abstract:
PURPOSE: A fuel electrode-supported flat tubular solid oxide fuel cell and a manufacturing method thereof are provided to facilitate manufacturing of stack, simplify current collection, and reduce manufacturing cost. CONSTITUTION: A fuel electrode-supported flat tubular solid oxide fuel cell comprises a plurality of unit cells(1) which are laminated into serial stacks or parallel, flow channels(12) for fuel gas to flow which are formed inside fuel electrode-supporter of the unit cells, an electrolyte layer(20), a cathode(30), and connecting materials(40) which are equipped on surfaces of the fuel electrode supporter, interconnectors locating between the unit cells which are formed by paste, and a metal mesh(50) for current collection which is arranged on the Interconnector.
Abstract:
PURPOSE: A bundle of a unit cell assembly type SOFC is provided to ensure excellent airtightness of a coupling state while facilitating the coupling of the cell assembly with a manifold and to easily separate or replace each cell assembly from the manifold. CONSTITUTION: A method for preparing a bundle of a unit cell assembly type SOFC comprises the steps of: sealing a closed cap at one part of a cylindrical cell and an open cap(113) having a connection tube(113a) at the other part of the cell; completing a cell assembly(110) by installing a current collector around the cell; and coupling the cell assembly to a manifold(120) equipped with a fuel inflow tube(122) using a fitting body and lock-fitting(130).
Abstract:
본 발명은 고체산화물 연료전지가 다층으로 적층되는 경우에 연료전지의 출력의 손실을 줄이며, 금속분리판의 소재로 크로퍼를 적용할 수 있는 고체산화물 연료전지의 금속분리판의 표면처리방법에 관한 것이다. 본 발명의 고체산화물 연료전지의 금속분리판 표면처리는 고체산화물 연료전지의 금속분리판 소재로서 크로퍼(Crofer 22 APU)를 모재로 사용하고, 그 표면에 샌드블라스팅으로 표면처리한 후 (La 0.85 Sr 0.15 ) 0.9 MnO 3 또는 La 0.8 Sr 0.2 CoO 3 을 코팅재료로 하는 코팅용 슬러리를 스프레이 방식으로 코팅하여 형성된 세라믹 코팅층을 질소의 불활성 분위기 또는 질소 및 수소의 환원 분위기 하에 열처리한 것을 특징으로 한다. 상기와 같은 세라믹 코팅층을 형성함으로써 산화크롬(Cr 2 O 3 )과 같은 스케일의 형성을 억제시켜 고체산화물 연료전지의 우수한 장기 성능 특성을 얻을 수 있는 장점이 있다. 고체산화물 연료전지, 금속분리판, 스케일, 슬러리
Abstract:
A heating device of metallic interconnect is provided to form a dense coating layer minimizing micropore or microcrack on the metallic interconnect, to reduce the loss of output in operation of a solid oxide fuel cell, and to maintain long term endurance and performance of the metallic interconnect. A heating device of metallic interconnect(1) for a solid oxide fuel cell comprises a flat heating plate(11) which is mounted with the metallic interconnect and heats the metallic interconnect to 150~300 °C; a heating unit(12) which includes a heater(12a) providing the to the heating plate and a control part(12b) controlling a heating temperature; an insulating member(13) insulating a part which does not contact with the heating plate of the heater on the bottom surface of the heater; a case(14) accommodating the heating plate, heater and insulating unit; and a clamp(15) fixing the metallic interconnect on the heating plate.