Structural Changes in Si–CuSi Films upon Intercalation of Lithium Ions

Autor:	I. S. Fedorov, A. A. Mironenko, A. S. Rudyi, E. Yu. Buchin, V. V. Naumov
Rok vydání:	2019
Předmět:	Amorphous silicon Materials science Physics and Astronomy (miscellaneous) Copper silicide Silicon Annealing (metallurgy) chemistry.chemical_element Sputter deposition Copper chemistry.chemical_compound chemistry Sputtering Thin film Composite material
Zdroj:	Technical Physics Letters. 45:973-976
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785019100043
Popis:	We studied the possibility of using composite films representing amorphous silicon reinforced with crystalline inclusions of copper silicide as an anode material for lithium-ion batteries with liquid electrolyte. The films were made by layer-by-layer magnetron sputtering of amorphous silicon and copper, followed by low-temperature (100–200°C) annealing of the structure. The tests of the anodes revealed the effect of prolonged intense growth of their reversible capacity. To describe the effect, a phenomenological model based on the multidirectional migration of silicon and copper atoms in an inhomogeneous field of elastic mechanical stresses arising during electrode cycling is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c5f2f94750abed6f3d3db623136bd31a https://doi.org/10.1134/s1063785019100043 Zobrazit plný text záznamu Plný text ve formátu PDF