Issue 45, 2017

One-step synthesis of V2O5/Ni3S2 nanoflakes for high electrochemical performance

Abstract

In this work, we, for the first time, have designed and fabricated V2O5/Ni3S2 nanoflakes on a nickel foam substrate by a simple one-step hydrothermal method. The as-prepared V2O5/Ni3S2 nanoflake active electrode exhibited high-performance lithium-ion storage and superior supercapacitor properties. As an anode material for lithium-ion batteries, the V2O5/Ni3S2 nanoflakes exhibited a discharge capacity of 435 mA h g−1 in the 600th cycle, demonstrating their excellent cycling and rate performances. As an electrode material for electrochemical supercapacitors, it presented an areal capacitance of 4.2 F cm−2 at a current density of 5 mA cm−2. Theoretical analysis reveals that the diffusion-controlled storage process is dominant in the total capacitance, attributed to the p–n V2O5/Ni3S2 heterojunctions. The results illustrate that the V2O5/Ni3S2 nanoflakes have a wide range of potential applications in the energy storage field.

Graphical abstract: One-step synthesis of V2O5/Ni3S2 nanoflakes for high electrochemical performance

Supplementary files

Article information

Article type
Paper
Submitted
04 Sep 2017
Accepted
17 Oct 2017
First published
17 Oct 2017

J. Mater. Chem. A, 2017,5, 23543-23549

One-step synthesis of V2O5/Ni3S2 nanoflakes for high electrochemical performance

X. Wang, B. Shi, X. Wang, J. Gao, C. Zhang, Z. Yang and H. Xie, J. Mater. Chem. A, 2017, 5, 23543 DOI: 10.1039/C7TA07767J

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