The Current Formation Processes in Lithium Power Sources with SiO2 – C Composite Cathode
Journal Title: Фізика і хімія твердого тіла - Year 2015, Vol 16, Issue 3
Abstract
The current formation process in lithium power source (LPS) with SiO2 –22% C composition cathode is explored in this work using galvanostatic cycling, cyclic voltammetry and impedance spectroscopy methods.It is set that specific capacity of LPS is 1757 mA•h/g at its discharge in the mode C/20. Further cycling of LPS is accompanied by a sharp decline in specific capacity (irreversible capacity after the first cycle exceeds 95 %) due to formation of solid electrolyte interface of LiF composition and LiхSiO2 compound, in which lithium is not oxidized to the ion state during charging of source. It is found that the insertion of lithium ions into cathodematerial to the value x = 1,8 results in reduction of their diffusion coefficient on 4 orders (DLi = 2,2•10 -14 ÷2,1•10 -18 сm2/s).
Authors and Affiliations
I. F. Myronyuk, V. I. Mandzyuk, V. M. Sachko
Keywords
Related Articles
- EP ID EP296715
- DOI 10.15330/pcss.16.3.569-575
- Views 77
- Downloads 0
Problems of Selection of Lubricants for Ethylene High-Pressure Compressors. 4. Investigation of Antifriction Properties of Naphtene and Polyglycol Oils during High Loading of Solid Lubricant Pair
The antifriction properties of naphtene and polyglycol oils during little loading with lubrication of pair bronze-tungsten-carbide-alloy WK-6 (WK-ll) and graphelon-20-WK-6 (WK-11) and high loading with lubrication of pai...
Thermodynamic Analysis of Compatibility of Niobium Carbide with Hadfield Steel for Cermets Development
Hadfield steel due to its high wear resistance under impact conditions is currently being considered as perspective material for using as a binder phase in carbide – steels. One of the key factors in the selection of a r...
Cool Air-Gas Mixtures with Combustible Gas Admixtures Steady Flameless Combustion Delay Time on Platinum Particle (Wire)
The proposed work shows analytical way to find a build-up time (induction period) for a mode of steady flameless catalytic combustion on metallic wire for cool air-gas mixtures with combustible gaseous admixtures using a...
Inflence of Electric Field on the Melting Characteristics Burning Wax
A study of influence of homogeneous electric-field is undertaken on the processes of melting and burning of particles to the octadecane in mid air. It is shown that in the electric field on the initial stage diminishes s...
Effect of the Substitution of S for Se on the Optical Absorption Spectra of the Glassy Alloys Ag1.6Ga1.6Ge31.2S61.6-xSex
Optical absorption spectra of the glassy alloys Ag<sub>1.6</sub>Ga<sub>1.6</sub>Ge<sub>31.2</sub>S<sub>61.6-x</sub>Se<sub>x</sub> in the range of 400-1000 nm at 80 and 300 K have been investigated. It was revealed that w...