2013 Fiscal Year Final Research Report
Elucidation of the crucial catalytic effect of rubidium on oxygen reduction reaction
| Project/Area Number |
23655121
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional materials chemistry
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| Research Institution | Tokyo Institute of Technology |
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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)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 触媒 / 燃料電池 / ルビジウム / 酸素還元反応 / タリウム |
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| 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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[Presentation] 電極界面の赤外分光測定2013
Author(s)
北村房男
Organizer
第59回ポーラログラフィーおよび電気分析討論会
Place of Presentation
石垣市民会館( 沖縄県石垣市浜崎町1丁目1番2)
Year and Date
20131128-1201
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