Preparation and characterization of carbon supported Pt and PtRu alloy catalysts reduced by alcohol for polymer electrolyte fuel cell
Preparation and characterization of carbon supported Pt and PtRu alloy catalysts reduced by alcohol for polymer electrolyte fuel cell
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DOI：
10.1016/j.electacta.2004.01.124
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发表时间：
2004-11
影响因子：
6.6
通讯作者：
Taeyoon Kim;Masashi Takahashi;M. Nagai;Koichi Kobayashi
中科院分区：
文献类型：
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作者：
Taeyoon Kim;Masashi Takahashi;M. Nagai;Koichi Kobayashi
以聚乙烯吡咯烷酮为稳定剂，通过醇还原法制备了碳载体上高度分散的细小Pt和PtRu合金颗粒，用于聚合物电解质燃料电池催化剂。通过紫外可见光谱、X射线衍射、电子显微镜、X射线光电子能谱和循环伏安法对所制备的催化剂进行了表征。该方法的优点在于其简单性和无需任何修改即可直接还原氯化物盐。此外，还获得了高度均匀的纳米颗粒，并且催化剂的结构和形貌易于控制。通过该方法制备的催化剂与商业催化剂的比较表明，其在氧还原和甲醇氧化方面具有良好的活性。
Highly dispersed fine Pt and PtRu alloy particles on carbon support were prepared for polymer electrolyte fuel cell catalysts by alcohol-reduction method using polyvinylpyrrolidone as a stabilizer. The prepared catalysts were characterized by UV–visible spectroscopy, X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy, and cyclic voltammetry. This method has advantages over its simplicity and the straight reduction of chloride salt without any modification. Also, highly uniform nanoparticles were obtained and the structure and morphology of catalysts could be easily controlled. Comparison of the catalyst prepared by this method against commercial catalysts shows that it has a promising activity in oxygen reduction and methanol oxidation.