Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 45, Issue -, Pages 48-51Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2014.05.014
Keywords
Nanotubes; Charge storage; DFT; Image charge; Screening
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Funding
- Deutsche Forschungsgemeinschaft (FOR) [1376]
- PIP-CONICET [112-2010001-00411]
- CONICET
- Agencia Nacional de Promocion Cientifica y Tecnologica, FONCYT, prestamo BID [PICT-2012-2324]
- CAID [501 201101 00276]
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We examine the insertion of alkali ions into narrow nanotubes of graphite and gold by density functional theory. The surrounding tubes screen the ionic charge very effectively; the resulting image energy compensates well for the loss of solvation. In addition, ion-ion interactions are strongly reduced. These effects are stronger for gold than for graphite tubes. Our results explain at an atomic level, why narrow tubes store charge so effectively. (C) 2014 Elsevier B.V. All rights reserved.
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