| Project/Area Number |
15K14125
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Nagoya Institute of Technology |
|---|
Principal Investigator |
FUKUDA KOICHIRO 名古屋工業大学, 工学(系)研究科(研究院), 教授 (90189944)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
ASAKA Toru 名古屋工業大学, 大学院工学研究科, 准教授 (80525973)
YOSHIDA Hideto 東京大学, 大学院理学系研究科, 技術職員 (30376553)
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Keywords | セラミックス / 構造・機能材料 / 環境材料 |
|---|
| Outline of Final Research Achievements |
We have developed a newly modified reactive diffusion method which is widely applicable to the complex systems, and actually established the methodology for the preparation of high-performance crystal-oriented ceramics with optimized chemical compositions. We have succeeded in preparing the highly oxide-ion conductive crystal-aligned polycrystal by adjusting the chemical composition as well as crystal structure, which has been achieved by the heat treatment of sandwich-type diffusion couples with appropriate stacking structure. The developed solid-state electrolyte has been composed of polycrystalline lanthanum silicate oxyapatite doped with both BaO and Si deficiency. Its oxide-ion conductivity has been achieved the world highest level of 0.034 Scm-1 at 773 K. This value is about sixty times larger than that of the yttria-stabilized zirconia, which is practically used as electrolytes of solid oxide fuel cells at present.
|
