2013 Fiscal Year Final Research Report
Development of solid state ionic conductors by crystal lattice modulation
| Project/Area Number |
23686020
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
IGUCHI Fumitada 東北大学, 工学(系)研究科(研究院), 准教授 (00361113)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | YSZ / プロトン導電体 / 結晶格子変調 / イオン伝導 / 熱応力 / 導電特性 |
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| Research Abstract |
We evaluate the influence of crystal lattice modulation to electrical properties of solid state ionic conductors to clear the feasibility of the developing method based on crystal lattice modulation. Electrical conductivity of conventional oxygen ionic conductor yttria stabilized zirconia (YSZ) is measured under 2-axis stress conditions, which produced by thermal stress between YSZ and substrates or support rings. As a result, electrical conductivity is increased by tensile lattice modulation, and decreased by compressive lattice modulation. It shows the possibility of lattice modulation as the key technology in "developing method of new solid state ionic conductors".
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