Synthesizing a LiFePO4/graphene composite with electrochemically prepared few-layer graphene

•A few-layered graphene was successfully synthesized using fast and straightforward electrochemical exfoliation of graphite.•The LiFePO4/graphene composite was prepared by solid-state synthesis.•LiFePO4/graphene material reveals specific capacity of 142 mA h/g at 0.1 C.•The structure of the composit...

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Bibliographic Details
Published in:Journal of energy storage 2019-04, Vol.22, p.373-377
Main Authors: Cech, Ondrej, Klvac, Ondrej, Benesova, Petra, Maca, Josef, Cudek, Pavel, Vanýsek, Petr
Format: Article
Language:English
Subjects:
Electrochemical exfoliation
Graphene
LiFePO4
Lithium iron phosphate
Lithium-ion battery
Natural graphite
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Summary:•A few-layered graphene was successfully synthesized using fast and straightforward electrochemical exfoliation of graphite.•The LiFePO4/graphene composite was prepared by solid-state synthesis.•LiFePO4/graphene material reveals specific capacity of 142 mA h/g at 0.1 C.•The structure of the composite is composed of transparent few-layer graphene flakes surrounded by submicron LFP crystals. We present a LiFePO4/graphene composite prepared via a solid-state synthesis where electrochemically fabricated few-layer graphene was used as one of the precursors. Thin few-layer graphene flakes decorated with LiFePO4 submicron-sized particles were obtained, and the corresponding characterization was performed using electrochemical methods, XRD, and SEM. The electrochemical performance of the electrode material enhanced with the few-layer graphene as additive was compared to a reference sample with conventional Super P carbon used.
ISSN:2352-152X
2352-1538
DOI:10.1016/j.est.2019.02.020