One step synthesis of core@shell SiGe@Si nanoparticles and their use as active material in high capacity anodes for Li-ion batteries - Archive ouverte HAL Access content directly
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One step synthesis of core@shell SiGe@Si nanoparticles and their use as active material in high capacity anodes for Li-ion batteries

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Abstract

In the frame of energy transition, silicon is a material of interest to develop Li-ion batteries with increased energy density. Nevertheless, the important volume change upon cycling (280 %) and reactivity towards electrolytes lead to rapid degradation of performances. Designing silicon-germanium structures is an efficient strategy to obtain stable performances of Li-ion batteries anodes. The synergetic effect of alloying silicon and germanium was demonstrated by Duveau et al [1], using micrometric particles obtained by ball-milling. The stability of the alloys was better than the stability of pure silicon and its capacity was higher than the capacity of pure germanium.
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Dates and versions

cea-02329299 , version 1 (23-10-2019)

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  • HAL Id : cea-02329299 , version 1

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Antoine Desrues, John Alper, Florent Boismain, Pierre-Eugène Coulon, Adrien Soloy, et al.. One step synthesis of core@shell SiGe@Si nanoparticles and their use as active material in high capacity anodes for Li-ion batteries. Lithium Battery Discussions "Electrode Materials" (LiBD-9), Sep 2019, Arcachon, France. ⟨cea-02329299⟩
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