Abstract:
PURPOSE: A method for fabricating a nanofiber mat having nanofibers is provided to maintain physical property and to prevent reduction of functional inorganic catalyst particles. CONSTITUTION: A method for fabricating a nanofiber mat containing nanofibers with inorganic catalyst particles attached on the surface comprises a step of electrospinning polymer materials to prepare nanofibers and spraying an inorganic catalyst particle solution on the surface of the nanofibers. The polymer material contains coupling agent. A protection device has a nanofiber mat.
Abstract:
본 발명은 황산화 이산화티탄을 포함하는 직접메탄올 연료전지용 전해질막 및 그 제조방법과 이를 사용하는 막전극 접합체 및 직접메탄올 연료전지에 관한 것이다. 본 발명에 따라 이온전도성 고분자로 제조되는 직접메탄올 연료전지용 전해질막은, 황산화 이산화티탄이 상기 이온전도성 고분자 매트릭스에 분산되어 있는 것을 특징으로 한다. 본 발명의 전해질막은 메탄올의 투과도를 낮출 수 있기 때문에 직접메탄올 연료전지에 사용되는 경우에는 선택도가 높다. 전해질막, 황산화 이산화티탄, 직접메탄올 연료전지
Abstract:
PURPOSE: Mesoporous magnetite and a method for manufacturing the same are provided to obtain the stability of a sintering process and an wide specific surface area by being optimally synthesized. CONSTITUTION: Magnetite nanoparticle aggregate is composed of magnetite nanoparticles. Mesopores are arranged between the nanoparticles. The aggregate is formed into a spherical shape. A method for manufacturing mesoporous magnetite aggregate contains the following: micelle is formed in a hydrophilic solvent using amphipthic block copolymer. Based on the micelle, magnetite particles are prepared by introducing a magnetite precursor. The magnetite particles are sintered. The molar ratio of the block copolymer and the magnetite precursor is in a range between 1:10 and 1:80.