Facile synthesis of zno nanoparticles on nitrogen-doped carbon nanotubes as high-performance anode material for lithium-ion batteries

Haipeng Li, Zhengjun Liu, Shuang Yang, Yan Zhao, Yuting Feng, Zhumabay Bakenov, Chengwei Zhang, Fuxing Yin

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

ZnO/nitrogen-doped carbon nanotube (ZnO/NCNT) composite, prepared though a simple one-step sol-gel synthetic technique, has been explored for the first time as an anode material. The as-prepared ZnO/NCNT nanocomposite preserves a good dispersity and homogeneity of the ZnO nanoparticles (~6 nm) which deposited on the surface of NCNT. Transmission electron microscopy (TEM) reveals the formation of ZnO nanoparticles with an average size of 6 nm homogeneously deposited on the surface of NCNT. ZnO/NCNT composite, when evaluated as an anode for lithium-ion batteries (LIBs), exhibits remarkably enhanced cycling ability and rate capability compared with the ZnO/CNT counterpart. A relatively large reversible capacity of 1013 mAhg-1 is manifested at the second cycle and a capacity of 664 mAhg-1 is retained after 100 cycles. Furthermore, the ZnO/NCNT system displays a reversible capacity of 308 mAhg-1 even at a high current density of 1600 mAg-1. These electrochemical performance enhancements are ascribed to the reinforced accumulative effects of the well-dispersed ZnO nanoparticles and doping nitrogen atoms, which can not only suppress the volumetric expansion of ZnO nanoparticles during the cycling performance but also provide a highly conductive NCNT network for ZnO anode.

Original languageEnglish
Article number1102
JournalMaterials
Volume10
Issue number10
DOIs
Publication statusPublished - Sep 21 2017
Externally publishedYes

Keywords

  • Anode
  • Highly-dispersed ZnO nanoparticles
  • Lithium ion battery
  • Sol-gel
  • ZnO/nitrogen-doped carbon nanotube (ZnO/NCNT) composite

ASJC Scopus subject areas

  • Materials Science(all)

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