Si85fe15ox alloy anode materials with high thermal stability for lithium ion batteries

Yijia Liu, Michael Charlton, Jun Wang, J. Craig Bennett, M. N. Obrovac

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Resumen

The synthesis, microstructure and electrochemical properties of ball milled Si85Fe15Ox alloys with different oxygen contents are investigated. These materials combine the features of Si-M alloys (low irreversible capacity) and SiOx materials (high thermal stability). This makes Si85Fe15Ox alloys compatible with high temperature processing. As shown here, these properties allow Si85Fe15Ox alloys to be incorporated into carbon-coated graphite composite particles that can cycle well even without the use of advanced binders or electrolyte additives.

Idioma original	English
Número de artículo	110521
Publicación	Journal of the Electrochemical Society
Volumen	168
N.º	11
DOI	https://doi.org/10.1149/1945-7111/ac3163
Estado	Published - nov. 2021

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Publisher Copyright:
© 2021 The Author(s).

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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AB - The synthesis, microstructure and electrochemical properties of ball milled Si85Fe15Ox alloys with different oxygen contents are investigated. These materials combine the features of Si-M alloys (low irreversible capacity) and SiOx materials (high thermal stability). This makes Si85Fe15Ox alloys compatible with high temperature processing. As shown here, these properties allow Si85Fe15Ox alloys to be incorporated into carbon-coated graphite composite particles that can cycle well even without the use of advanced binders or electrolyte additives.

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