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Titolo:
MICROSCOPIC DERIVATION OF THE HUBBARD-ONSAGER-ZWANZIG EXPRESSION OF LIMITING IONIC-CONDUCTIVITY
Autore:
BAGCHI B;
Indirizzi:
INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT BANGALORE 560012 KARNATAKA INDIA INDIAN INST SCI,JAWAHARLAL NEHRU CTR ADV SCI RES BANGALORE 560012 KARNATAKA INDIA
Titolo Testata:
The Journal of chemical physics
fascicolo: 10, volume: 109, anno: 1998,
pagine: 3989 - 3993
SICI:
0021-9606(1998)109:10<3989:MDOTHE>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIELECTRIC FRICTION; MOLECULAR THEORY; ELECTROLYTE-SOLUTIONS; MOVING ION; LIQUIDS; DIFFUSION; DYNAMICS; MOBILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
B. Bagchi, "MICROSCOPIC DERIVATION OF THE HUBBARD-ONSAGER-ZWANZIG EXPRESSION OF LIMITING IONIC-CONDUCTIVITY", The Journal of chemical physics, 109(10), 1998, pp. 3989-3993

Abstract

An outstanding problem in the theory of ionic conductivity is a derivation of the well-known Hubbard-Onsager-Zwanzig expression for the dielectric friction on an ion from first principles. In fact, microscopictheories have repeatedly failed to reproduce the Hubbard-Onsager-Zwanzig expression under any limiting conditions. We show in this article that the existing molecular theories and the continuum model treatments calculate two entirely different contributions to the friction on the ion. While the former calculates the contribution from the solvent density mode alone, the latter includes only the contribution from the current mode. Thus the existing molecular theories can never be reduced to the Hubbard-Onsager (H-O) theory. In addition, we show that the existing molecular theories become inconsistent for larger ions where the H-O theory is accurate. The reverse is true for smaller ions. An expression is derived here which is valid at both the Limits and for allion sizes and its consequences discussed. (C) 1998 American Instituteof Physics. [S0021-9606(98)50234-6].

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Documento generato il 15/07/20 alle ore 21:40:18