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Desolvation of Ions in Subnanometer Pores and Its Effect on Capacitance and Double‐Layer Theory
Author(s) -
Chmiola John,
Largeot Celine,
Taberna PierreLouis,
Simon Patrice,
Gogotsi Yury
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704894
Subject(s) - ion , nanoporous , acetonitrile , solvation , capacitance , electrochemistry , electrode , layer (electronics) , double layer capacitance , shell (structure) , charge (physics) , double layer (biology) , chemistry , materials science , nanotechnology , chemical physics , physics , chromatography , quantum mechanics , organic chemistry , composite material , dielectric spectroscopy
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).