ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

разрядная ёмкость

NiO/C-based anodes for lithium-ion current sources

Nowadays, the active search for an anode material, which can be used in lithium-ion current sources, takes place. The potential anode materials are transition metal oxides (SnO2, NiO and others). In this work, submicron NiO powder was obtained using the thermal decomposition of Ni(CH3COO)2⋅4H2O. Besides, a NiO/C composite anode was fabricated and its behavior in the anode half-cell of lithium-ion current source was studied during multiple cycling.

Аноды на основе NiO/C для литий-ионных источников тока

В настоящее время ведется активный поиск анодного материала для литий-ионных источников тока (ЛИИТ). Потенциально возможными материалами ЛИИТ являются оксиды переходных металлов (SnO2, NiO и другие). В работе методом термического разложения Ni(CH3COO)2·4H2O получен субмикронный порошок NiO, изготовлен композитный анод NiO/C и изучено его поведение при многократном циклировании в составе анодного полуэлемента ЛИИТ. Показана работоспособность полученного анодного материала и определены его основные энергетические характеристики.

Influence of additives of carbon nanotubes and graphene to the active mass of the negative electrode of the lead-acid battery on its electrochemical characteristics

The electrochemical characteristics of the negative electrodes of the lead-acid battery with additives of carbon nanotubes and graphene were studied. It was shown that the highest values of the capacitive characteristics of the electrodes were obtained by adding carbon nanotubes to the negative active mass. The processes occurring on the negative electrode were studied by the method of impedance spectroscopy. Applying simulation, an equivalent electrical circuit was obtained, which adequately approximated the obtained frequency dependences.

C/SiC-based anodes for lithium-ion current source

Compositions of ultrafine Si and C particles are promising anode materials for lithium-ion power sources with improved energy characteristics. In the work, samples of lithium-ion power sources with an anode made of ultrafine SiC fibers, as well as mixtures of SiC fibers with graphite (C/SiC) and electrolytically deposited submicron silicon fibers (C/Si/SiC) were fabricated and studied for energy characteristics.

The effect of ultrasound on the coating properties and the kinetics of lead dioxide electrodeposition on the steel base

The influence of the ultrasonic field on lead dioxide electrodeposition from nitrate electrolyte was studied. The adsorption of electroactive particles and the amount of nucleation on the electrode surface were found to have increased as well as the formation of OH-radicals accelerated under the influence of the ultrasonic field.

Structural and Electrochemical Characteristics of Porous Lead Electrodes with Additive Nanostructured Carbon

The effect of carbon materials of two types was studied: multi-walled carbon nanotubes (“Art-nano” of the NSU “S” brand (TU BU 690654933.001.-2011)) and multilayer graphene (“Art-nano GT” (TU BU 691460594.004–2017), and modifications by treatment with ozone and dimethylformamide (manufacturer LLC Advanced Research and Technology, Belarus) on the structural characteristics, capacity and utilization of the active mass of the negative electrode of a lead-acid battery.