capacity

Lithium-ion batteries with improved performance are increasingly in demand in various fields. Silicon-based materials are one of the most actively studied materials, because they allow increasing the discharge capacity of the anode. In this work, we continue studying the behavior of the thin-film silicon anodes inside the anode half-cell of a lithium-ion battery in the conditions of limited charge capacity to 1000 and 4000 mA·h/g.

A method for producing nitrogen-doped carbon nanotubes was tested. Polyaniline, chemically synthesized on the surface of nanotubes with subsequent carbonization, was used as a source of nitrogen. The electrochemical characteristics of the electrodes based on the obtained carbon material for the hybrid supercapacitors with the acidic electrolyte were studied. It was shown that nitrogen doping of carbon nanotubes increases the capacitive characteristics of the electrodes. 

In the current paper electrospun nanofiber mats were derived from polyacrylonitrile (PAN). The temperature influence on the volumetric and surface composition of the resulting pyropolymers was studied by means of elemental analysis and X-ray photoelectron spectroscopy.

DOI: https://doi.org/10.18500/1608-4039-2017-17-1-9-18

The energetic properties of the new composite electrode materials suitable for electrochemical capacitors were investigated. Composite electrodes were made using Norit A activated carbon and synthesized sparingly soluble copper salts such as copper iodide(I) and hexacyanoferrates (II), etc. (III). The composition of the salts was confirmed by elemental analysis and the particle size was determined by the Scherrer equation using the data of X­-ray phase analysis.