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Graphene mono- or bi-layers highly scattered in porous carbon nanofibers are prepared via an electrospinning technique. The nanocomposite with a flexible membrane tightly adherent on Cu foil is directly used as a binder-free anode for Na-ion batteries, demonstrating high reversible capacity, unprecedented rate capability, and ultra-long cycling life.
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Liu et al. (2016) studied this question.
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