Elucidation of the crucial catalytic effect of rubidium on oxygen reduction reaction
Project/Area Number |
23655121
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Multi-year Fund |
Research Field |
Functional materials chemistry
|
Research Institution | Tokyo Institute of Technology |
Principal Investigator |
KITAMURA Fusao 東京工業大学, 総合理工学研究科(研究院), 准教授 (00224973)
|
Project Period (FY) |
2011 – 2013
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
|
Keywords | 触媒 / 燃料電池 / ルビジウム / 酸素還元反応 / タリウム / 電極触媒 / 金電極 / 酸素還元 / 酸素発生反応 / 触媒作用 |
Research Abstract |
This study aimed to elucidate the mechanism of enhanced oxygen reduction reaction (ORR) at a gold electrode in the presence of rubidium ion in basic solutions. It was indicated, however, that the catalytic activity of the electrode largely influenced by the presence of substances other than rubidium ion. Chemical analyses using ICP and XPS revealed that a trace amount of thalium existed in the reagent of rubidium salts. The ORR experiment in the presence of tiny amount of thalium ion in the solution showed an appreciable improvement in the catalytic activity. XPS analysis of the electrode surface suggested that the adsorbed thalium can modify the electronic property as well as the adsorption amount of OH groups at the gold electrode surface.
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Report
(4 results)
Research Products
(18 results)