Abstract
In this paper, the effect of heat treatment in an inert medium on the structure and electrochemical characteristics of a composite based on multi-walled carbon nanotubes (MWCNTs) and manganese oxide formed by deposition from a KMnO4 solution is investigated. As a result of heat treatment composite (500°C) in argon on the surface of multi-walled carbon nanotubes are formed nanoparticles of non-stoichiometric manganese oxide. X-ray photoelectron spectroscopy data indicate a high degree of functionalization of the surface of carbon nanotubes by oxygen-containing groups, as well as the possible formation chemical bonds at the interfaces of the composite. Electrochemical measurements showed that the specific capacity of the composite after heat treatment (88-50 F/g) exceeds the capacity of the original MWCNTs (18-15 F/g) in the current range discharge 0.1-1A/g.
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