2012 Fiscal Year Final Research Report
Fundamental Research on AnionConductive Layered Materials
| Project/Area Number |
23750240
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Kyoto University |
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Principal Investigator |
MIYAZAKI Kohei 京都大学, 大学院・工学研究科, 助教 (10512783)
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| Project Period (FY) |
2011 – 2012
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| Keywords | イオン伝導体 |
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| Research Abstract |
In this study, we investigated the mechanism of ion conduction of layered double hydroxides (LDHs) as a novel anion conductor for the next-generation electrochemical energy devices. LDHs with controlled cation ratios were synthesized by the co-precipitation method. Electrochemical impedance measurements showed that LDHs displayed a sharpened increase in ionic conductivity when the trivalent cation proportion was 0.33 (M3+/M2+= 2). Any change in LDH particle morphology and surface area was not observed, regardless of the change in cation ratios. We therefore concluded that some influences other than the increase in carrier density are predominant to determine the ion conductivities of LDHs.
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