lithiation

Lithium-ion batteries with improved performance are increasingly in demand in various fields. Silicon-based materials are one of the most actively studied materials, because they allow increasing the discharge capacity of the anode. In this work, we continue studying the behavior of the thin-film silicon anodes inside the anode half-cell of a lithium-ion battery in the conditions of limited charge capacity to 1000 and 4000 mA·h/g.

Silicon is one of the promising anode materials for lithium-ion batteries with enhanced performance. However, the degradation of silicon during lithiation/delithiation is still the main problem that prevents it commercial use as electrodes. In this work the behavior of a silicon film of about 5–6 µm thick electrodeposited from LiCl-KCl-CsCl-K2SiF6 melt on glassy carbon was studied during its lithiation and delithiation, the film being a part of the anode half-cell of a lithium-ion battery.

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.