Please use this identifier to cite or link to this item: http://essuir.sumdu.edu.ua/handle/123456789/42717
Or use following links to share this resource in social networks: Recommend this item
Title Charge Distribution Around Nanoscale Nonhomogeneities in Solid State Ionics
Authors Bokun, G.S.
Groda, Ya.G.
Lasovsky, R.N.
Vikhrenko, V.S.
Keywords Nernst-Planck-Poisson equations
Solid state ionics
Fuel cell
Lattice model
Kinetic Monte
Charge density
Electric conductivity
Transition probability
Activation energy
Type Conference Papers
Date of Issue 2015
URI http://essuir.sumdu.edu.ua/handle/123456789/42717
Publisher Sumy State University
License
Citation Charge Distribution Around Nanoscale Nonhomogeneities in Solid State Ionics [Текст] / G. Bokun, Ya. Groda, R. Lasovsky, V. Vikhrenko // Nanomaterials: Applications & Properties (NAP-2015) : Proceedings of the International Conference. — Sumy : Sumy State University, 2015. — V.4, No1. — 01PCSI07.
Abstract The system of Nernst-Planck-Poisson equations is modified by including the gradient terms in the chemical potential expression. The gradient terms are important in the regions of significant inhomogeneities, e. g. near the interface boundaries. These modified equations are used for investigating the particle density distribution in the vicinity of interphase boundary of a solid electrolyte. The differential equation of the fourth order for the problem of contact between two solid phases is formulated. Its analytic solution which describes non monotonic distribution of charge in both phases is obtained. It is shown that the gradient component added in the transport equations makes a decisive contribution in the double layer region. The approach is further expanded to the system composed of bulk phases and the intergrain layer between them. The particle density distributions at different conditions are investigated. The quasy-one dimensional lattice model of the fuel cell is considered in the frame of kinetic Monte Carlo simulation. It is shown that the electrostatic interaction between ions makes a significant contribution to the activation energy of migration of the particles. On the other hand, the fluctuations of the energy barriers slightly increase the particle migration activation energy. It is found that at blocked electrodes in the near electrode regions electrical double layers are formed. The thickness of the electrical double layer is around few lattice constants.
Appears in Collections: Наукові видання (ЕлІТ)

Views

Belarus Belarus
6
Canada Canada
1
China China
3
France France
4
Germany Germany
11
Italy Italy
1
Lithuania Lithuania
1
Netherlands Netherlands
1130
Poland Poland
1
Russia Russia
1
Serbia Serbia
1
Ukraine Ukraine
504
United Kingdom United Kingdom
4515
United States United States
566
Unknown Country Unknown Country
25
Vietnam Vietnam
1

Downloads

Australia Australia
1
Belarus Belarus
6771
China China
11
France France
3
Germany Germany
5
Israel Israel
1
Japan Japan
1
North Korea North Korea
1
Poland Poland
1
Russia Russia
1
Spain Spain
2
Ukraine Ukraine
442
United Kingdom United Kingdom
1
United States United States
3
Unknown Country Unknown Country
9

Files

File Size Format Downloads
Bokun.pdf 573,78 kB Adobe PDF 7253

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.