Desolvation of ions in subnanometer pores and its effect on capacitance and double-layer theory

被引:578
作者
Chmiola, John [1 ]
Largeot, Celine [2 ]
Taberna, Pierre-Louis [2 ]
Simon, Patrice [2 ]
Gogotsi, Yury [1 ]
机构
[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[2] Univ Toulouse 3, CNRS, UMR 5085, CIRIMAT, F-31062 Toulouse 4, France
关键词
electrochemistry; ion pairs; nanostructures; porosity; solvation;
D O I
10.1002/anie.200704894
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Recasting the double layer: The implicit assumption that electrochemical double layers are governed only by ion/electrode charge separation may be short-sighted and lead to a fundamental misunderstanding of the phenomenological response. This is shown in a study performed on ions confined in nanoporous carbon with pores smaller than the size of an ion surrounded by a solvation shell (see picture; TEA+=tetraethylammonium, AN=acetonitrile). (Chemical Equation). © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:3392 / 3395
页数:4
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