lithium-ion battery

The additive into electrolyte SO₂ allowing to realize the intercalation of lithium ions into spectral-pure graphite is shown in the work given. The monolayer of SO₂ restoration products possessing the properties of solid inter phase electrolyte is formed on the material given. The formation of the surface layer requires 160±15 mA·h/g.

The publications of the recent 15 years devoted to using lithium metal in rechargeable batteries are analyzed and their short overview is presented.

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.

The study of the internal resistance of the lithium-ion battery designed and manufactured by JSC «Saturn» as the original, and after a long cycle life by pulse chronopotentiometry and electrochemical impedance was carried out. It is shown that the higher the hexagonal ordering of the material and the closer the degree of cation mixing to the optimal value, the less polarization resistance of the battery as original, and after a long cycle life. It was found that the less the original polarization resistance of the battery, the more its cyclic life.

It is shown that the performance of lithium-ion battery is significantly affected by the component structure of the electrodes, electrode fabrication technology, forming the battery mode. It is shown that in the production of lithium-ion batteries can be used the following materials: as a binder – polymer dispersion of water-based СНР 500, the negative electrode material – synthetic graphite 131181008–1 brands and 20130905.

This work is dedicated to phosphoric acid esters working as solvents for lithium-ion and supercapacitor (SC) electrolyte. The electrical conductivity of electrolytes based on phosphoric acid esters, lithium salts, commonly used in lithium-ion batteries (LIB), and salts used in SC technology was measured. The thermodynamic stability of new electrolytes in comparison with other solvents used in chemical power sources technology was also estimated. It was shown that the thermodynamic stability of phosphoric acid ester increases in a homologous series.

УДК 541.136

DOI:  https://doi.org/10.18500/1608-4039-2016-16-3-100-121

DOI: https://doi.org/10.18500/1608-4039-2017-17-2-99-119

DOI: https://doi.org/10.18500/1608-4039-2017-17-4-235-248

DOI: https://doi.org/10.18500/1608-4039-2018-18-2-98-108