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- Title
Self-Supported NiSe/Ni Foam: An Efficient 3D Electrode for High-Performance Supercapacitors.
- Authors
Zhang, Jingtong; Zhao, Fuzhen; Du, Kun; Zhou, Yan
- Abstract
Three-dimensional (3D) mixed phases NiSe nanoparticles growing on the nickel foam were synthesized via a simple one-step hydrothermal method. A series of experiments were carried out to control the morphology by adjusting the amount of selenium in the synthetic reaction. Meanwhile, the as-prepared novel column-acicular structure NiSe exist three advantages including ideal electrical conductivity, high specific capacity and high cycling stability. It delivered a high capacitance of 10.8 F cm − 2 at a current density − of 5 mA cm − 2 . An electrochemical capacitor device operating at 1.6 V was then constructed using NiSe/NF and activated carbon (AC) as positive and negative electrodes. Moreover, the device showed high energy density of 31 W h kg − 1 at a power density of 0.81 kW kg − 1 , as well as good cycling stability (77% retention after 1500 cycles). Mixed phase NiSe nanomaterials on nickel foam are prepared using a simple method that can be used as electrode materials for supercapacitors without binder. The evolution of this morphology was successfully explored through regulating the quality of Se powder. The column-acicular NiSe on NF was used directly as electrode material of supercapacitor, which showed super electrochemical performance (10.8 F cm−2 at a current density of 5 mA cm−2).
- Subjects
ELECTRODES; SUPERCAPACITORS; MORPHOLOGY; ELECTRIC conductivity; NANOSTRUCTURED materials
- Publication
NANO, 2018, Vol 13, Issue 11, pN.PAG
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292018501369