Electrical properties of composites based on nanoporous carbon material

I. M. Budzulyak; P. I. Kolkovskyi; B. I. Rachiy; M. I. Kolkovskyi; S. L. Revo; R. Y. Musiy; A. M. Gamarnyk; A. B. Hrubiak

doi:10.15330/pcss.21.3.409-414

Authors

I. M. Budzulyak Vasyl Stefanyk Precarpathian National University
P. I. Kolkovskyi Vasyl Stefanyk Precarpathian National University
B. I. Rachiy Vasyl Stefanyk Precarpathian National University
M. I. Kolkovskyi Vasyl Stefanyk Precarpathian National University
S. L. Revo Taras Shevchenko National University of Kyiv
R. Y. Musiy Department of Physical Chemistry of Fossil Fuels InPOCC, National Academy of Sciences of Ukraine
A. M. Gamarnyk Ivano-Frankivsk National Medical University
A. B. Hrubiak G.V. Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine

DOI:

https://doi.org/10.15330/pcss.21.3.409-414

Keywords:

Mott-Schottky model, nanoporous carbon material, flat-band potential

Abstract

In this work, the morphological and electrical properties of the composite nanoporous carbon material/thermally expanded graphite or acetylene black have been investigated. Nanoporous carbon material was obtained from plant materials by its thermochemical activation based on potassium hydroxide. The dependence of the specific capacity of the nanoporous carbon/electrolyte electrochemical system on the applied potential was determined by the impedance spectroscopy method. Furthermore, the concentration of charge transfer and the density of states, as well as the flat-band potential of the system under research, were determined based on the Mott-Schottky model.

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