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

Литиевые электрохимические системы

“Проблемы развития литий-ионных аккумуляторов в мире и в России”

Проведен краткий анализ современного состояния развития литий-ионных аккумуляторов в мире и в России. Сделан вывод, что масштаб производства литий-ионных аккумуляторов в России составляет сотые доли процента от мирового производства. Прогнозируется, что к 2030 году доля российских литий-ионных аккумуляторов может возрасти до 0,2% от мирового уровня.

Ренессанс литиевого электрода

Краткий обзор. Рассмотрены работы последних 15 лет, посвящённых возможности использования металлического лития в аккумуляторах

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.

Effect of properties of carbon materials on specific energy and cycling of lithium-sulfur batteries

The effect of the structure and the specific surface area of carbon materials, contained in positive electrodes, on the peculiarities of cycling of lithium-sulfur cells (the depth of electrochemical reduction of sulfur and lithium polysulfides, the changes in capacity and Coulomb efficiency of cycling) was studied.

Application of operando X-ray diffraction to evaluate phase transformations of a LiCoVO₄ cathode

Characterization by in situ or operando methods is very important to deeper understand the chemical and electrochemical processes, as well as the degradation processes that occur during the operation of a lithium-ion battery.

Neodymium-doped lithium titanate as anode material for lithium-ion batteries

Doped lithium titanate is known to be able to reversibly cycle in the potential range from 3 to 0.01 V and this ability depends both on the nature of the dopant and the doping level. In this work Li4Ti5O12 samples doped with Nd in the amount of 0.5 to 2.0% were studied. It was shown that while being cycled in the extended potential range, the samples with the doping level from 0.5 to 1.0% demonstrated the highest capacity.

The effect of surface capacity of positive electrodes on cycle life of lithium-sulfur batteries

The effect of sulfur content in positive electrodes (the surface capacity of sulfur electrodes) on the characteristics (such as the depth of sulfur electrochemical reduction, changes in capacitance and Coulomb efficiency during cycle life) of lithium-sulfur cells with electrolytes based on sulfolane was studied. It was shown that the reason for the capacitance decrease of the lithium-sulfur cells at the early stage of its cycle life is the displacement of sulfur of the porous positive electrode from the rear regions into the front ones.

Study of the reversible electrochemical insertion of lithium into boron

The reversible insertion of lithium into electrodes based on amorphous boron has been studied. The reversible capacity upon the lithium insertion has been found to be about 750 mA⋅h/g. The most efficient in terms of specific capacity are the electrodes containing graphene as a conductive additive.

The chemical current sources with a magnesium anode: Electrode materials and their properties

The article is devoted to the study of the possibility of creating chemical current sources with a magnesium anode. The work presents the continuation of the analysis of conventional current sources with high specific characteristics. The article describes the types of cathode-active substances that have potential possibility in making chemical current sources with a magnesium anode or an anode based on magnesium intermetallic compounds.

Research of solid-state short-circuit system Li/polymeric composite of PAN for CSC

The researches of behaviour of electrochemical systems organized by a method of direct contact of the Li-anode and a polymeric composite, including co-polymer polyacrylonitrile and organic semiconductor representing salt of thiopyrily with ClO4- and SnCl62- anions are carried out. The basic electrochemical parameters of researched systems are determined.