Jump to main content
Jump to site search


Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology

Author affiliations

Abstract

A series of hierarchical nanoarrays with a lavender-like structure was synthesized via a facile in situ hydrothermal method by sequential partial ion exchange. Hierarchical Ni@Ni3S2 nanoarrays that were partially surrounded with nanoflakes were first fabricated by simultaneously using Ni foam as a template and as a source. The hierarchical structure was composed of one-dimensional rods combined with two-dimensional nanoflakes. Furthermore, Co and Se ions, as the beneficial cation and anion, were successfully introduced into the hierarchical Ni@Ni3S2 material by sequential partial ion exchange. This reaction formed Ni@Ni3S2/Co9S8 and Ni@Ni3S2/Co9S8/NiSe composite multilevel electrodes with structures that were similar to those of the parent materials. All the as-prepared materials were assembled into asymmetric supercapacitor devices to explore their electrochemical performance. Compared with single-component Ni@Ni3S2, the Ni@Ni3S2/Co9S8/NiSe//active carbon device exhibited a better rate performance of 78.93 F g−1 at a current density of 1 A g−1 (retaining 75% from 1 A g−1 to 10 A g−1). This device still delivered an energy density of 17.75 Wh kg−1 even at a high power density of 1945.2 W kg−1. This finding demonstrated that Ni@Ni3S2/Co9S8/NiSe is a promising electrode material for supercapacitors.

Graphical abstract: Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 22 Jan 2017, accepted on 16 Feb 2017, published on 17 Feb 2017 and first published online on 17 Feb 2017


Article type: Research Article
DOI: 10.1039/C7QI00047B
Citation: Inorg. Chem. Front., 2017, Advance Article
  •   Request permissions

    Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology

    S. Huang, W. Zhang, S. Cui, W. Chen and L. Mi, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00047B

Search articles by author