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Structural Changes in Si–CuSi Films upon Intercalation of Lithium Ions
- Source :
- Technical Physics Letters. 45:973-976
- Publication Year :
- 2019
- Publisher :
- Pleiades Publishing Ltd, 2019.
-
Abstract
- 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.
Details
- ISSN :
- 10906533 and 10637850
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Technical Physics Letters
- Accession number :
- edsair.doi...........c5f2f94750abed6f3d3db623136bd31a