ZnO nanorods grown directly on copper foil substrate as a binder-free anode for high performance lithium-ion batteries

Lanyan Huang, Xin Wang, Fuxing Yin, Yongguang Zhang, Jinwei Gao, Junming Liu, Guofu Zhou, Zhumabay Bakenov

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

ZnO nanorods directly grown on copper foil substrate were obtained via hydrothermal method without using templates. Structure and morphology of the as-prepared ZnO nanorods were characterized by X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy. The ZnO nanorods on copper foil (ZnO@CF) exhibited remarkably enhanced performance as anode for lithium batteries with the initial discharge capacity of 1236 mAh g-1 and a capacity of 402 mAh g-1 retained over 100 cycles at a current density of 200 mA g-1. The ZnO@CF anode demonstrated an excellent rate capability, delivering a reversible capacity of 390 mAh g-1 at 1500 mA g-1. This superior performance of the ZnO@CF anode is believed to be due to the unique structure of this binder-free anode, favoring mass and charge transfer at its interface with the electrolyte, effectively reducing the Li-ions diffusion paths and providing conditions to accommodate the anode volume variations upon charge-discharge cycling.

Original languageEnglish
Pages (from-to)8439-8446
Number of pages8
JournalInternational Journal of Electrochemical Science
Volume11
Issue number10
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • Anode
  • Binder-free
  • Lithium ion battery
  • ZnO nanorods

ASJC Scopus subject areas

  • Electrochemistry

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