Abstract:
PURPOSE: A manufacturing method of solid oxide fuel cells is provided to easily adjust a thickness of a solid electrolyte thin film through the control of deposition time without a soaking/drying process which is performed many times in a conventional dip method. CONSTITUTION: A manufacturing method of tubular solid oxide fuel cells comprises: a step of providing a tubular negative electrode; a step of forming a solid electrolyte thin film on the negative electrode; and a step of forming a positive electrode on the solid electrolyte thin film. A manufacturing method of the solid electrolyte thin film comprises: a step of manufacturing a slurry composition for forming the solid electrolyte thin film; and a step of spraying the slurry composition by using electrostatic spray deposition while the tubular negative electrode is rotated after the tubular negative electrode is installed in an electrostatic spray deposition device as a supporter.
Abstract:
PURPOSE: A manufacturing method of solid oxide fuel cell is provided to minimize contraction difference between thin films by minimizing organic components in a slurry composition, and to improve battery performance by increasing adhesion of a dense thin film to the porous thin film. CONSTITUTION: A manufacturing method of solid oxide fuel cell comprises: a step of manufacturing a porous support by mono-axially press-molding powder for forming electrode, and drying the product; a step of forming a solid electrolyte laminate layer by spraying slurry composition for forming solid electrolyte on the porous support; a step of co-sintering the porous support and the solid electrolyte laminate layer. The slurry composition comprises 5-20 parts by weight of polyvinylbutyral, and 100-500 parts by weight of a mixture of alcohol/organic solvent based on 100.0 parts by weight of ceramic powder for the solid electrolyte.
Abstract:
본 발명은 전이금속이 도프된 하이드로젠 티타네이트(H 2 Ti 2 O 5 ·H 2 O)로 이루어진 나노튜브이며, 상기 전이금속은 Ni, Co 및 Fe로 이루어진 그룹으로부터 선택된 하나의 원소이고, 상온에서 강자성을 띠며 400K 이하의 온도에서 큐리온도(Curie temperature)를 갖는 것을 특징으로 하는 묽은 자성 반도체를 제공한다. 바람직하게, 상기 전이금속은 니켈(Ni)일 수 있다. 묽은 자성 반도체, 이산화티타늄, 니켈, 강자성 반도체
Abstract:
PURPOSE: A dilute magnetic semiconductor is provided to increase the non-surface area by making TiO2 power in which the transition metal is doped through the hydrothermal synthesis method with the titanate nanotube. CONSTITUTION: A dilute magnetic semiconductor is the nanotube consisting of the hydrogen titanate in which the transition metal is doped. The transition metal is the selected one from the group consisting of Ni, and Co and Fe element. In the room temperature, the dilute magnetic semiconductor has the curie temperature in a temperature less than 400K and has ferromagnetism.
Abstract:
An apparatus and a method for fabricating Gd-doped CeO2 nano-sized powder by electro-spray aerosol flame deposition are provided to show excellent crystalline with a spheral shape. A method for fabricating Gd-doped CeO2 nano-sized powder by electro-spray aerosol flame deposition comprises: a first step of preparing a mixed solution containing Ce precursors and Gd precursors; a second step of injecting the mixed solution into a chamber through a nozzle so as to generate aerosol; a third step of transferring the aerosol to an oxidizing region using a carrier gas; and a fourth step of vaporizing the aerosol using a torch such that the aerosol is oxidized. The molar ratio of the Ce precursors and the Gd precursors is 1:0.1 - 1:0.7.
Abstract:
본 발명은 고밀도 플라즈마 공정이 수행되는 장비에 사용되는 알루미나 소결체로 이루어진 부품에 내플라즈마성이 우수한 세라믹 층을 형성하는 방법에 관한 것으로서, 알루미나 분말과 세라믹 분말의 혼합 분말을 포함하는 제1 슬러리 조성물로 중간층을 형성하는 단계, 세라믹 분말을 포함하는 제2 슬러리 조성물로 세라믹층을 형성하는 단계 및 상기 중간층과 세라믹 층을 소결하는 단계를 포함하는 것을 특징으로 한다.