morphology

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.

The review contains information on modern methods and approaches to the obtaining of solid lithium-accumulating compounds of various classes, their modification with the purpose of increasing the properties of accumulation of lithium ions in the structure, accelerating the kinetics of reversible lithium insertion, the formation of electroactive composites based on these compounds, composite electrode layers on a metal substrate using these composites.

Various strategies for the synthesis of promising electrode materials for lithium-ion battery (LIB) based on iron(II)-lithium orthosilicate (Li₂FeSiO₄) using widely distributed, environmentally friendly and inexpensive starting materials are considered.