2012 Fiscal Year Final Research Report
Correlation between grain-boundary character and electrical properties of cerium oxide ceramics
| Project/Area Number |
22560681
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Shizuoka University (2012)
Japan Fine Ceramics Center (2010-2011) |
|---|
Principal Investigator |
SUDA Seiichi 静岡大学, 工学部, 教授 (50226578)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KAWAHARA Koichi 一般財団法人ファインセラミックスセンター, 主任研究員 (00302175)
KINOSHITA Kumiko 一般財団法人ファインセラミックスセンター, 研究員 (70552595)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 粒界特性 |
|---|
| Research Abstract |
Cerium oxide ceramics are a promising material as an electrolyte of intermediate temperature solid oxide fuel cell. However, cerium oxide brings about highly electronic conduction at high temperatures and the electronic conduction would be derived from grain boundaries. We then try to elucidate the correlation between electric properties at grain boundaries and grain-boundary character with 4 Probe SPM. 4 Probe SPM enabled us to estimate double Shottky barrier derived from a single grain boundary. The non-ohmic I-V profiles in the vicinity of grain boundaries would be varied according to grain boundary character.
|
