| Summary: | 碩士 === 南台科技大學 === 奈米科技研究所 === 99 === Proton Exchange Membrane Fuel Cells are widely used as the electric power source for portable electronic device and communication equipment. However, the price of PEMFC is always an obstacle that prevents it from being a popular commercial product. The adoption of unitized regenerative fuel cell (URFC) system to produce pure hydrogen on its own and also perform as a fuel cell has become more attractive.
A unitized regenerative fuel cell (URFC) is able to produce hydrogen and also act as a fuel cell to generate DC power. To achieve these functions, catalysts with platinum and iridium dioxide (IrO2) supported on titanium nanoparticle play the important roles during the redox reactions. A spontaneous deposition method is introduced to make this trimetal catalyst. Chloroplatinic acid, IrO2 and titanium black are mixed uniformly with sodium carbonate after ultra-sonicating and stirring. Pt is deposited on the mixture of IrO2 and Ti-black. The morphologies and microstructures of the prepared catalysts are examined by means of TEM and SEM, and it is proved that the electrocatalyst Pt and IrO2 is welll deposited on Ti-black. Cyclic Voltammetry method offers a rapid and simple way for the initial characterization of a redox-active system, by immersing the electrocatalyst in a 1 M sulfuric acid solution, the performance of homemade catalyst is examined and discussed.
|
|---|
