Metal-air batteries and fuel cells are emerging technologies for energy storage devices due to the clean and environmental friendly fuels and zero emissions. This invention describes a novel component using electrospun nanofibers as a substrate, carbon nanotubes embedded in the nanofibers as a conductive medium and nanocatalysts coated on the nanofibers as actives reaction sites for the system. The electrospinning technology was conducted in order to produce the component. Parameters such as the recipes of the precursors, conditions of the electrospinning such as voltages, viscosity rates of the feed stocks and working distance, and thermal treatments of the as produced electrospun nanofibers were well studied. In addition to the advantages of the carbon nanotubes and nanocatalyst, mesoporous structure was created in the electrospun nanofiber. The micro/mesoporous structure not only provides an excellent mass transport pass way for ions in electrolyte to reach the catalyst but also increase the surface area for an efficient, rapid and massive reactions.
Our preliminary study on the novel nanofibers using the plate form of the Zn-air battery shows that the nanofibers mat possesses a good conductivity, high surface area and high loading of nanocatalysts resulting in an excellent performance in terms of high specific capacitance, good retention after charge- discharge cycles, good columbic efficiency and long life time. We suggest that the mat can be used in a variety of applications such as metal-air batteries, lithium ion batteries, fuel cells and so on.

1.新穎的多效能奈米碳纖維結構
2.纖維表面具有觸媒與孔洞的分布
3.纖維內部具有奈米碳管的分布增加其導電性

金屬空氣電池、燃料電池。