2017 Fiscal Year Annual Research Report
Improvement of fuel cell electrolytes by strain engineering
| Project/Area Number |
16K18235
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| Research Institution | Kyushu University |
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Principal Investigator |
ハリントン ジョージ 九州大学, 共進化社会システム創成拠点, 特任助教 (20753718)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | SOFCs / Thin films / Strain / Ceramic / Ion conductors |
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| Outline of Annual Research Achievements |
The purpose of this project was to understand the relationship between lattice strain and the association of defect on the conductivity of ionic conductors for solid oxide fuel cell applications. We have successfully demonstrated the modification of the conductivity as a function of lattice strain which is in excellent agreement with previous published results. Furthermore, we have demonstrated that by changing the size of the dopant cations, and thereby modifying the defect association, we can induce a much larger change in the conductivity than in state-of-the-art ionic conductors. This has important implication for electrolytes in fuel cells at low temperatures and for ionic-based memory applications operating at ambient conditions.
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