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Elsevier, Electrochimica Acta, (104), p. 117-123, 2013

DOI: 10.1016/j.electacta.2013.04.083

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A facile synthesis of graphite/silicon/graphene spherical composite anode for lithium-ion batteries

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The Graphite/Silicon@reGO composite was synthesized via spray drying and subsequent annealing. According to XRD, Raman spectroscopy and FT-IR, graphene was demonstrated to be existed in the composite. Moreover, SEM and TEM were also used to illustrate the morphology of Graphite/Silicon@reGO. Used as anode for lithium-ion battery, it exhibited good cyclability with a high reversible charge capacity of 575.1 mAh g−1 and showed a capacity retention ratio of 73.1% after 50 cycles at a current density of 50 mA g−1. It also presented good rate capability at different rates of 50–1000 mA g−1. EIS test showed that the composite electrode had a lower SEI resistance and charge-transfer resistance due to the existence of graphene.