Electrochemical performance of ZnO nanoplates as anode materials for Ni/Zn secondary batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • M. Ma
  • J.P. Tu
  • Y.F. Yuan
  • X.L. Wang
  • K.F. Li
  • F. Mao

Detail(s)

Original languageEnglish
Pages (from-to)395-400
Journal / PublicationJournal of Power Sources
Volume179
Issue number1
Online published20 Jan 2008
Publication statusPublished - 15 Apr 2008
Externally publishedYes

Abstract

Plate-like ZnO with good crystallinity were prepared by a simple hydrothermal synthesis method in Zn(NO3)2·6H2O and NaOH solution at 180 °C. The dimension of ZnO powder ranged from 200 to 500 nm and the average thickness was about 50 nm. The electrochemical performances of ZnO nanoplates as anode active materials for Ni/Zn cells were investigated by galvanostatic charge/discharge cycling and cyclic voltammogram (CV). The ZnO nanoplates showed better cycle stability than the conventional ZnO, and the discharge capacity maintained 420 mAh g-1 throughout 80 cycling tests. At the same time, they also exhibited higher midpoint discharge voltage and lower midpoint charge voltage. The continual SEM examinations on the electrode found that the morphology of the plate-like ZnO active material did not change essentially and the zinc dendrite was suppressed effectively, which resulted in the improvement of cycle stability of Ni/Zn secondary cells.

Research Area(s)

  • ZnO nanoplates, Electrochemical performance, Cycling stability, Nickel zinc secondary battery

Citation Format(s)

Electrochemical performance of ZnO nanoplates as anode materials for Ni/Zn secondary batteries. / Ma, M.; Tu, J.P.; Yuan, Y.F.; Wang, X.L.; Li, K.F.; Mao, F.; Zeng, Z.Y.

In: Journal of Power Sources, Vol. 179, No. 1, 15.04.2008, p. 395-400.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review