2016 Fiscal Year Final Research Report
Development of composite electrodes based on oxides with perovskite-related structures for oxygen reduction reaction
| Project/Area Number |
15K17916
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic industrial materials
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Keywords | 燃料電池 / ヘテロ界面 / 酸素還元電極触媒 / ペロブスカイト関連化合物 |
|---|
| Outline of Final Research Achievements |
In this study, composite electrodes based on oxides with perovskite-related structures were developed in order to reduce the electrode overpotential for oxygen reduction reaction of solid oxide fuel cells. This is because these oxide can take various crystal structures such as ABO3, A2BO4 and AA’B2O5+δ and readily form the heterointerface. We found that the oxygen surface exchange rate was accelerated at the heterointerface of (Sm,Sr)CoO3-δ/(Sm,Sr)2CoO4±δ. Thus, the introduction of heterointerface with the optimal mixed composition is the promising design guide of air electrode with high performance.
|
| Free Research Field |
電気化学，固体イオニクス，触媒化学
|
