Dissolution Precipitation Graphite as carrier of platinum catalyst for PEMFC
Date Issued
2006
Date
2006
Author(s)
Lin, Chuan-Zong
DOI
zh-TW
Abstract
Proton exchange membrane fuel cell is a clean energy. After hydrogen oxidation and oxygen reduction, the final product is water. The catalysts and membrane play an important role in fuel cell system. The platinum and platinum- ruthenium was the most popular catalyst. And the support was usually carbon black. Carbon black had good conductivity and large specific surface area. The surface of carbon black is oxidized under the cathode environment of a PEFC. Thus, the platinum particles would be agglomerated.
In this work, the DPG powders containing few CNTs(carbon nanotubes) and three dimension structure graphite were used as the support of catalyst in proton exchange membrane fuel cell. The CNTs(carbon nanotubes) and three dimension structure graphite might make the catalyst disperse well and the promotion of the electrochemical performance. TEM image of the Pt nanoparticles were obtained by using a JEM-2000FX operating at 200 kV. Exchange current was obtained by cyclic voltammetry method. Exchange current of catalyst supported on mixing powders containing 30 wt.% DPG are higher by 9% and 19%, respectively, than exchange current of catalyst supported on 100wt.% carbon black.
The DPG powders containing few fullerenes and CNTs(carbon nanotubes) could be used as the support of catalyst in proton exchange membrane fuel cell.
Subjects
質子交換膜燃料電池
DPG人工石墨粉
奈米碳管
鉑觸媒
proton exchange membrane fuel cell
platinum catalyst
CNTs(carbon nanotubes)
DPG
Type
thesis
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