3D hierarchically porous zinc-nickel-cobalt oxide nanosheets grown on Ni foam as binder-free electrodes for electrochemical energy storage

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

45 Scopus Citations
View graph of relations

Author(s)

  • Huixin Chen
  • Qiaobao Zhang
  • Xiang Han
  • Meilin Liu
  • Yong Yang

Detail(s)

Original languageEnglish
Pages (from-to)24022-24032
Journal / PublicationJournal of Materials Chemistry A
Volume3
Issue number47
Online published29 Oct 2015
Publication statusPublished - 21 Dec 2015

Abstract

Three-dimensional (3D) hierarchically porous transition metal oxides, particularly those involving different metal ions of mixed valence states and constructed from interconnected nano-building blocks directly grown on conductive current collectors, are promising electrode candidates for energy storage devices such as Li-ion batteries (LIBs) and supercapacitors (SCs). This study reports a facile and scalable chemical bath deposition process combined with simple calcination for fabricating 3D hierarchically porous Zn-Ni-Co oxide (ZNCO) nanosheet arrays directly grown on Ni foam with robust adhesion. The resulting nanostructures are then evaluated as a binder-free electrode for LIBs and SCs. Given its unique architecture and compositional advantages, the electrode exhibits a reversible capacity of 1131 mA h g-1 after 50 cycles at a current density of 0.2 A g-1, an excellent long-term cycling stability at a high current density of 1 A g-1 for 1000 cycles, and a desirable rate capability when tested as an anode for LIBs. When used for SCs, the electrode demonstrates a high specific capacitance (1728 F g-1 at 1 A g-1), an outstanding rate capability (72% capacitance retention from 1 A g-1 to 50 A g-1), and an excellent cycling stability (capacitance of 1655 F g-1 after 5000 cycles at a current density of 20 A g-1 with 108.6% retention). Overall, the unique 3D hierarchically porous ZNCO nanosheets hold a great promise for constructing high-performance energy storage devices.

Citation Format(s)

3D hierarchically porous zinc-nickel-cobalt oxide nanosheets grown on Ni foam as binder-free electrodes for electrochemical energy storage. / Chen, Huixin; Zhang, Qiaobao; Han, Xiang; Cai, Junjie; Liu, Meilin; Yang, Yong; Zhang, Kaili.

In: Journal of Materials Chemistry A, Vol. 3, No. 47, 21.12.2015, p. 24022-24032.

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