Abstract
Thermodynamics and kinetics of lithium intercalation into C--SiO$_2$ nanocomposites are investigated. Dependencies of both differential capacity and intercalation kinetics on the nanocomposite size are established. The processes are analyzed in terms of the impedance model. The obtained results are explained based on the quantum effect of interference blockade of electron tunneling into a nonmetallic nanoparticle. Propositions for the new electrochemical energy storage technology are presented.
Highlights
A growing interest to nanostructures has been observed lately
Application of the nanodispersed FeS2 in an energy storage device with the lithium anode increases the specific capacity by about 20% in comparison with the coarse-grained homologue [1], and the nanosized α-Fe2O3 possesses high recirculated capacity 200 mA·hour/g and good cycling in the range of 1.5–4.0 V regarding Li+/Li in comparison with the macrostructured α-Fe2O3, α-Fe3O4, and γ-Fe2O3 [2]
We think that production of new cathode materials on the basis of cheap and ecologically clean substances due to the dimensional effects is a rational way of making the energy storage devices
Summary
A growing interest to nanostructures has been observed lately These structures possess a number of unique physical properties that turned out to be quite promising from the viewpoint of their practical applications in electronics. Nanotechnology may be one of the effective ways of solving an urgent technical problem of producing a cathode material with high specific energy. Application of the nanodispersed FeS2 in an energy storage device with the lithium anode increases the specific capacity by about 20% in comparison with the coarse-grained homologue [1], and the nanosized α-Fe2O3 possesses high recirculated capacity 200 mA·hour/g and good cycling in the range of 1.5–4.0 V regarding Li+/Li in comparison with the macrostructured α-Fe2O3 , α-Fe3O4 , and γ-Fe2O3 [2]. We think that production of new cathode materials on the basis of cheap and ecologically clean substances due to the dimensional (nano) effects is a rational way of making the energy storage devices. The paper is devoted to consideration of the above problem
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