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Battery performances of the samples in half-cells in 1 M LiPF6 in EC: DEC (1:1) with 10% FEC and 2% VC electrolyte. First cycles at C/20 with the corresponding irreversible capacities for Si-GHG samples (a) and Si@C-GHG samples (b). Cycling performances (discharge capacities) of the different samples at C/5 charging/discharging rate (c).
