• 文献标题:   Superior Li-ion storage performance of graphene decorated NiO nanowalls on Ni as anode for lithium ion batteries
  • 文献类型:   Article
  • 作  者:   CHEN XL, XIAO T, WANG SL, LI J, XIANG P, JIANG LH, TAN XY
  • 作者关键词:   energy storage conversion, electrochemical corrosion, composite material, nickel oxide, electrochemical reconstruction
  • 出版物名称:   MATERIALS CHEMISTRY PHYSICS
  • ISSN:   0254-0584 EI 1879-3312
  • 通讯作者地址:   China Three Gorges Univ
  • 被引频次:   13
  • DOI:   10.1016/j.matchemphys.2018.09.061
  • 出版年:   2019

▎ 摘  要

Graphene decorated NiO nanowalls grown on porous Ni foam (NiO-G-Ni) are fabricated via facile electrochemical corrosion and subsequent annealing treatment. High pseudocapacitive contribution for charge storage is triggered in the NiO-G-Ni, with hierarchical porous architecture improving lithium ion diffusion and graphene backbone facilitating electron transfer. The NiO-G-Ni undergoes novel electrochemical reconstruction upon cycling, while nano-size of NiO and graphene decoration are well kept. As a result, the NiO-G-Ni exhibits superior cycle stability. It delivers initial charge/discharge capacity of 936/734 mAh g(-1)at 125 mA g(-1). The charge/discharge capacity decrease little in the first few cycles and then gradually recover and maintain at 732/722 mAh g(-1) after 150 cycles.