Issue 34, 2019, Issue in Progress

Facile in situ growth of ZnO nanosheets standing on Ni foam as binder-free anodes for lithium ion batteries

Abstract

ZnO has attracted increasing attention as an anode for lithium ion batteries. However, the application of such anode materials remains restricted by their poor conductivity and large volume changes during the charge/discharge process. Herein, we report a simple hydrothermal method to synthesize ZnO nanosheets with a large surface area standing on a Ni foam framework, which is applied as a binder-free anode for lithium ion batteries. ZnO nanosheets were grown in situ on Ni foam, resulting in enhanced conductivity and enough space to buffer the volume changes of the battery. The ZnO nanosheets@Ni foam anode showed a high specific capacity (1507 mA h g−1 at 0.2 A g−1), good capacity retention (1292 mA h g−1 after 45 cycles), and superior rate capacity, which are better than those of ZnO nanomaterial-based anodes reported previously. Moreover, other transition metal oxides, such as Fe2O3 and NiO were also formed in situ on Ni foam with perfect standing nanosheets structures by this hydrothermal method, confirming the universality and efficiency of this synthetic route.

Graphical abstract: Facile in situ growth of ZnO nanosheets standing on Ni foam as binder-free anodes for lithium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
06 May 2019
Accepted
31 May 2019
First published
19 Jun 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 19253-19260

Facile in situ growth of ZnO nanosheets standing on Ni foam as binder-free anodes for lithium ion batteries

T. Xia, Y. Wang, C. Mai, G. Pan, L. Zhang, W. Zhao and J. Zhang, RSC Adv., 2019, 9, 19253 DOI: 10.1039/C9RA03373D

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