Electrical Conductivity of Nitrogen-Containing Nanoporous Carbon Materials
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 3
Abstract
Dependence of electro-physical characteristics of nanoporous carbon material on the degree of compaction its elements have been investigated. It is ascertained that maximum electrical conductivity occurs with the pressure of 5 MPa. It is also detected, that forming of N- and O- compounds on the surface of materials, we have examined, causes according rise or reduction of conductivity. There well seen, that the Drude-Smith model satisfactorily describes dependence of the electrical conductivity on frequency, thus it caused by porous structure of the material and by functional groups on the surface of closely packed particles. It brings to distribution of step block levels for transportation of charges. So, the time of their acceleration and length of their free path reduced; surface functional groups create dielectric layers; conductive channels become broken, and form irredundant ones.
Authors and Affiliations
M. M. Kuzyshyn, B. K. Ostafiychuk, I. M. Budzulyak, B. I. Rachiy, R. V. Ilnytskyy, L. O. Moroz
Keywords
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