Abstract:
본 발명은 SOFC 연료극에 사용되는 재료에 관한 것으로, 기존의 우수한 전기전도도 및 기계적 강도를 가진 Ni-YSZ 혼합물을 사용하되, 메탄분위기에서 탄소침적률을 향상시키기 위하여 Co, Fe와 같은 소량 금속을 고용하였고, 고온에서의 안정성을 더욱 향상시키기 위해 코어-셀 구조로 된 연료전지용 금속 고용 니켈/이트리아 안정화 지르코니아 코어-셀 복합체의 제조방법에 관한 것이다. 상기 연료전지용 금속 고용 니켈/이트리아 안정화 지르코니아 코어-셀 복합체의 제조방법은, 하이드라진 환원법을 이용하여 금속 고용니켈(Ni1-xMx) 나노분말로 합성하는 단계와, 상기 하이드라진 환원법으로 금속 고용 니켈을 합성하는 중에 양이온 계면활성제를 첨가하여 상기 금속 고용 니켈 표면에 양전하를 주는 단계와, 음전하를 가지고 있는 이트리아 안정화 지르코니아(YSZ) 나노 복합분말을 물에 수화시키는 단계와, 상기 양전하를 띄고 있는 금속 고용 니켈과 음전하를 띄고 있는 이트리아 안정화 지르코니아를 정제수를 용매로 한 상태에서 교반하는 단계와, 상기 교반한 혼합용액을 건조하여 상기 금속 고용 니켈이 코어(core)에 위치하고 상기 이트리아 안정화 지르코니아가 셀(shell)에 위치하는 니켈-이트리아 안정화 지르코니아 분말을 제조하는 단계와, 상기 금속 고용 니켈-이트리아 안정화 지르코니아 분말을 펠릿으로 제작한 후 고온소결하는 단계를 포함하는 것을 특징으로 한다.
Abstract:
The present invention relates to manufacturing method for nickel oxide used in an anode for a solid oxide fuel cell and, more specifically, to a technology for manufacturing nickel oxide (Ni1-xMxO) doped with metal ions by using a solvothermal process. The present invention provides the manufacturing method for metal-doped nickel oxide powders using the solvothermal process comprising: a step (A) of adding a metal ion source selected from the group consisting of a nickel nitrate hydrate and a hydrate of Al(NO_3)_3, Co(NO_3)_3 and Fe(NO_3)_3 in an ethanol solvent and mixing the ingredients; a step (B) of putting the solution in which mixing is completed in an autoclave and makes the ingredients react at 210-250°C for 20-30 hours; a step (C) of drying the ingredients in a drying oven after washing the ingredients with ethanol and distilled water; and a step (D) of calcining the ingredients at 800-1200°C.
Abstract:
PURPOSE: A method for manufacturing an active carbon electrode for a super capacitor is provided to control oxygen which is exhausted to a gas by eliminating a functional group including oxygen formed on an activated coal powder surface through a thermal process. CONSTITUTION: Activated coal powder is thermally treated at temperature of 700-1000°C in a nonactive gas atmosphere to eliminate a functional group including oxygen formed on an activated coal powder surface. An electrode material is made by mixing activated coal powder, a binder, a conductive material, and a dispersing medium. A form of an electrode is formed by pressing a cathode material, coating both sides of the cathode material in a metal foil, or rolls the cathode material using a roller to be a form of a sheet and attaching the sheet to the metal foil. The electrode is formed by drying the output of an electrode form at a temperature of 100°C-350°C.
Abstract:
본 발명은 본 발명은 고체산화물 연료전지(Solid Oxide Fuel Cell)용 연료극에 사용되는 니켈 옥사이드의 제조에 관한 것으로서, 더욱 상세하게는 용매열 합성법(solvothermal process)을 이용하여 메탈이온을 도핑한 니켈옥사이드(Ni 1-x M x O)를 제조하는 기술에 관한 것이다. 본 발명에 따르면 (A)질산니켈 수화물과 Al(NO 3 ) 3 , Co(NO 3 ) 3 및 Fe(NO 3 ) 3 의 수화물로 이루어지는 군으로부터 선택되는 메탈이온 소스를 에탄올 용매에 첨가하여 교반하는 단계; (B)교반이 완료된 용액을 오토클레이브에 넣고 210~250℃에서 20~30시간 동안 반응시키는 단계; (C)에탄올과 증류수를 이용하여 수세 후, 드라잉 오븐에서 건조하는 단계; 및 (D)800~1200℃에서 하소하는 단계를 포함하는 용매열 합성법을 이용한 메탈 도핑 니켈옥사이드 분말의 제조방법이 제공된다.
Abstract:
The present invention relates to a material used for an anode of a solid oxide fuel cell (SOFC) and, in particular, to a method for preparing a nickel/yttria-stabilized zirconia (Ni-YSZ) core-shell composite comprising the solid solution of metal for a fuel cell having a core-shell structure to improve stability at a high temperature, which uses an existing Ni-YSZ composite with excellent electroconductivity and mechanical strength and comprises the solid solution of a small amount of Co, Fe, and the like to improve the rate of carbon deposition. The method for preparing a Ni-YSZ core-shell composite comprising the solid solution of metal for a fuel cell comprises the steps of: synthesizing nanopowder of nickel comprising the solid solution of metal (Ni1-xMx) by using a hydrazine reduction method; giving cations to the surface of the nickel comprising the solid solution of metal by adding a cation surface active agent in the process of synthesizing the nickel comprising the solid solution of metal by using the hydrazine reduction method; dissolving the composite nanopowder of yttria-stabilized zirconia (YSZ) having anions; churning the positively charged nickel comprising the solid solution of metal and the negatively charged YSZ in the solvent of distilled water; producing Ni-YSZ powder having the nickel comprising the solid solution of metal at the core thereof and the YSZ at the shell thereof by drying the churned mixed solution; and sintering, at a high temperature, pellets made of the Ni-YSZ powder comprising the solid solution of metal.
Abstract:
PURPOSE: A polyacrylic functional group-substituted electrode mixture is provided to reduce the side reaction during a secondary battery reaction while having excellent adhesion and to improve the stability at charging and discharging during electrical performance. CONSTITUTION: A polyacrylic functional group-substituted electrode mixture includes an electrode active material and includes a polyacrylic mixture which has a Li, Na, K-substituted functional group in a polyacrylic acid with a polymerization degree of 13,000-18,000 as a binder. The polyacrylic acid has a molecular weight of 1,000,000-1,250,000. The polyacrylic mixture is a polymer which has a functional group including Li, Na, and K and the amount thereof included is 0.1-100 parts by weight based on 100.0 parts by weight of a polyacrylic acid.