Analysis of interactions between polymer and metal at electro-catalystfor polymer electrolyte fuel cells

聚合物电解质燃料电池电催化剂上聚合物与金属之间的相互作用分析

• 批准号: 23760029
• 负责人: WAKISAKA Mitsuru
• 金额: $ 2.83万
• 依托单位: University of Yamanashi
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760029/
• 关键词: 界面; 燃料電池; 単結晶; 水素吸着; 酸素還元反応; 走査型トンネル顕微鏡

It is highly essential to understand the polymer/metal interfacefor achieving high utilization of electrocatalyst surface in polymer electrolyte fuelcells. In the present study, we prepared and studied model polymer/metal interfaces withsingle-crystal electrodes. Pt-Co and Pt-Ru alloy single-crystals were made by a novelmethod. Changes in cyclic voltammograms at the single-crystal electrodes revealedalloying effects on hydrogen adsorption and surface oxidation processes. Surfacestructures of the electrodes were characterized by scanning tunneling microscopy andX-ray photoelectron spectroscopy before and after adsorption of model polymers. It wasfound that the electrochemical behavior of the single-crystal electrodes was changed bythe adsorption of model polymers.

了解聚合物/金属界面对于实现聚合物电解质燃料电池中电催化剂表面的高利用率是非常必要的。在本研究中，我们制备并研究了单晶电极模型聚合物/金属界面。用一种新的方法制备了Pt-Co和Pt-Ru合金单晶。单晶电极上循环伏安图的变化揭示了合金化对氢吸附和表面氧化过程的影响。用扫描隧道显微镜和X射线光电子能谱对吸附模型聚合物前后电极的表面结构进行了表征。结果表明，模型聚合物的吸附改变了单晶电极的电化学行为。

项目成果

Hydrogen Adsorption and Surface Oxidation of Pt-100-xCox(111), (100) and (110) Alloy Single-Crystal Electrodes

Pt-100-xCox(111)、(100) 和 (110) 合金单晶电极的氢吸附和表面氧化

• 作者: S. Morishima;Y. Hyuga;M. Wakisaka;M. Watanabe;and H. Uchida
• 通讯作者: and H. Uchida

山梨大学 燃料電池ナノ材料研究センター 研究成果

山梨大学燃料电池纳米材料研究中心研究成果

Pt-Co(111)合金単結晶回転ディスク電極の酸素還元活性

Pt-Co(111)合金单晶转盘电极的氧还原活性

• 发表时间: 2013
• 作者: 森嶋翔也;脇坂暢;Donald A. Tryk;渡辺政廣;内田裕之
• 通讯作者: 内田裕之

Facile preparation and electrochemical behavior of Pt100−xCox(111) single-crystal electrodes in 0.1 M HClO4

• DOI: 10.1016/j.elecom.2011.01.013
• 发表时间: 2011-04
• 期刊: Electrochemistry Communications
• 影响因子: 5.4
• 作者: M. Wakisaka;Yohei Hyuga;Kiyotaka Abe;H. Uchida;Masahiro Watanabe

Electrochemical behavior of Pt-Co(111), (100) and (110) alloy single-crystal electrodes in 0.1 M HClO4 and 0.05 M H2SO4 solution as a function of Co content

Pt-Co(111)、(100) 和 (110) 合金单晶电极在 0.1 M HClO4 和 0.05 M H2SO4 溶液中的电化学行为随 Co 含量的变化

• DOI: 10.1016/j.elecom.2012.02.008
• 发表时间: 2012
• 期刊: Electrochemistry Communications
• 影响因子: 5.4
• 作者: M. Wakisaka;S. Morishima;Y. Hyuga;H. Uchida;and M. Watanabe
• 通讯作者: and M. Watanabe