2014 Fiscal Year Final Research Report
Decoupling of ionic transport by hydrogen bonds
| Project/Area Number |
25620008
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical chemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | リチウム電池 / 過冷却液体 / ガラス転移 / デカップリング / 水素結合 / 高分子固体電解質 / イオン伝導 |
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| Outline of Final Research Achievements |
Ionic transport in organic liquids containing lithium halides is measured by impedance spectroscopy and pulsed field gradient nuclear magnetic resonance (pfg-NMR) in the supercooled liquid and glassy states. Effect of the hydrogen-bond is mainly investigated. Lithium ion is usually coordinated strongly by oxygen sites in organic or water molecules which inhibits the translational motion of lithium ions in glassy state. However when appropriate amount of hydrogen bonds are introduced between the oxygen sites the remaining lithium ions start to move and contribute to their ionic conduction. This effect is typically seen in treharose-water-lithium iodide system, however is also seen in other liquid and polymers containing hydrogen bonds.
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| Free Research Field |
物理化学
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