Efficient synthesis of graphene-based powder via in situ spray pyrolysis and its application in lithium ion batteries

We report a modification of the reduction process based on the Hummers method that involves an in situspray pyrolysis

Juan Yang; Qunchao Liao; Xiangyang Zhou; Xiaojian Liu; Jingjing Tang

2013

Scholarcy highlights

  • Conventional solution-phase chemical reduction of exfoliated graphene oxide sheets followed by drying often results in serious reaggregation of the graphene sheets due to the high surface energy
  • We report a modification of the reduction process based on the Hummers method that involves an in situspray pyrolysis
  • A capacity of 180 mAh/g can be delivered even at an ultrahigh C rate of 40 C, and 95.4% of this capacity can be retained after 100 cycles
  • The effects of the spraying temperature were investigated in detail to gain insight into the spray pyrolysis process
  • Efficient synthesis of graphene-based powder via in situspray pyrolysis and its application in lithium ion batteries

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