Electrochemical characterization of mesoporous nanographite filmsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 июня 2016 г.
Аннотация:The mesoporous nanographite (NG) film material consisting of tiny flake-like graphite crystallites of
nanometer-scale thickness is deposited onto carbon fibers with diameter of few micrometers using
adapted plasma enhanced chemical vapor deposition (CVD) method. Macroscopic morphology parameters
of NG material depend on deposition time duration so, that thickness of the NG coating is increased
from 0.5 to 2 mm, whereas the average sizes of the individual crystallites and the pores between them are
decreased from 0.5 to 0.1 nm, with deposition time extension from 15 to 60 min, respectively. The high
resolution electron microscopy examinations indicate that the NG flakes consist of parallel graphene
layers separated by about 0.34 nm and those layers are paired at the edges of the flakes producing arced
structures. The electrochemical capacitance measurements were served for characterization of the
mesoporous nanographite coating; the specific capacitance arising from the electrostatic charge accumulated
at the electrodeeelectrolyte interface was estimated using cyclic voltammetry, galvanostatic
charge/discharge measurements, and electrical impedance spectroscopy. The effects of the deposition
time duration and other parameters of CVD process on electrochemical performance and structural
properties of the prepared NG films are to be discussed.