2016 Fiscal Year Final Research Report
Electric double layer at high ionic concentrations: effects of ion-specific dielectric decrement and finite size
| Project/Area Number |
26400433
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Biological physics/Chemical physics/Soft matter physics
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 電解質溶液 / 電気二重層 / 対イオン飽和 / 微分静電容量 / 電気浸透流 |
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| Outline of Final Research Achievements |
For understanding the nature of the electric double layer at high salt concentrations, we study the combined effects of ion finite size and dielectric decrement arising from the ionic solvation. Based on the model, the physical origin of non-monotonic variation of the differential capacitance of the electric double layer is discussed. The double-peak differential capacitance at low salinity as well as the single-peak differential capacitance at high salinity are reproduced by considering the ion finite size and the dielectric decrement, which depends on the ion types.
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| Free Research Field |
数物系科学
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