Nitrogen containing FePt Catalyst in Oxygen Reduction Reaction for Fuel Cells
Date Issued
2014
Date
2014
Author(s)
Chen, Syuan-Hong
Abstract
To promote the commercial of fuel cell, designing a high activity, high stability and low cost catalyst was a critical issue. Recently, the catalyst which iron nitride nanoparticle deposited on the zero dimensional and three dimensional carbon support was synthesized under the ammonia atmosphere and demonstrated a well performance in activity, electron transfer and yield of hydrogen peroxide in oxygen reduction reaction. However, its activity was still lower than commercial Platinum catalyst.
The electronic structure was an important factor to enhance the activity and inhabit the side reaction of catalyst. In present study, we established method to improve the activity by importing an electron donor, platinum for example, into the iron nitride catalyst enhance the back donation of active site.
In the present study, the characteristics of catalyst were identified by following technology. Crystal structure identified X-ray powder diffraction. X-ray Absorption Near Edge Structure (XANES) study by using synchrotron radiation was applied for the d-band vacancy of iron and platinum. The oxygen reduction performance was identified by cyclic voltammery. Confirm the introduction of platinum into iron nitride catalyst would enhance the catalytic activity.
Subjects
燃料電池
觸媒
氧氣還原
Type
thesis
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