Jump to main content
Jump to site search


Ni Foam Supported NiO nanosheets as High-Performance Free-Standing Electrodes for Hybrid Supercapacitors and Ni-Zn Batteries

Abstract

Herein, Ni foam (NF) supported NiO nanosheets with a NF@NiO core@shell structure have been synthesized by a facile etching-reoxidation method. The obtained NF@NiO can function as high-performance free-standing electrodes for both hybrid supercapacitors and Ni-Zn batteries. When employed as the cathode for hybrid supercapacitors, the NF@NiO exhibits a high areal capacitance of 2.01 F cm-2 at 8 mA cm-2. By coupling with a FeOOH anode, the assembled NF@NiO//FeOOH asymmetric supercapacitor delivers a peak energy density of 2.15 mWh cm-3 and a peak power density of 2.75 W cm-3. A rechargeable Ni-Zn battery is also assembled using the NF@NiO as the cathode. The NF@NiO//Zn battery demonstrates a high maximum energy density (25.6 µWh cm-2) and an impressive power density (86.48 mW cm-2) with remarkable cyclic durability (84.7% capacity retention for 10 000 cycles). These features make the free-standing NF@NiO a promising candidate for electrochemical energy storage.

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Aug 2018, accepted on 12 Sep 2018 and first published on 14 Sep 2018


Article type: Paper
DOI: 10.1039/C8TA07574C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Ni Foam Supported NiO nanosheets as High-Performance Free-Standing Electrodes for Hybrid Supercapacitors and Ni-Zn Batteries

    Q. Chen, J. Li, C. Liao, G. Hu, Y. Fu, O. K. Asare, S. Shi, Z. Liu, L. Zhou and L. Mai, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA07574C

Search articles by author

Spotlight

Advertisements