2012 Fiscal Year Final Research Report
Composite electrodes of iron oxides and carbons for high rate electrochemical reactions of lithium-oxygen batteries
| Project/Area Number |
23656603
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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 |
Energy engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HIBINO Mitsuhiro 東京大学, 大学院・工学系研究科, 研究員 (20270910)
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| Project Period (FY) |
2011 – 2012
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| Keywords | エネルギー生成 / 変換 |
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| Research Abstract |
Composite electrode materials of iron-based oxides and carbons for lithium-air batteries were investigated. Among various iron-based oxides investigated inthis study, perovskite-related A_0.5La_0.5FeO_z（A = Ca, Sr）underwent extraction and insertion of oxideions stably in wide range of oxygen composit~ion. Because of it allows reversible and repeatable extraction/reinsertion of oxide ions at fast rate ( D = 1.2×10^-13 cm^2 s^-1), Ca_0.5La_0.5FeO_2.863 was foundto be expected as an oxygen reduction catalyst (or a mediator) for air electrode of lithium-air batteries.
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