Abstract
A high-performance asymmetric supercapacitor was fabricated using MWCNTs/NiS composite and GNPs as electrodes, exhibiting high specific capacitance of ∼181 F g −1 at 1 A g −1 current density and excellent cyclic stability with 92% retention after 1000 cycles at 2 A g −1 current density. The electrochemical performance of asymmetric supercapacitors (ASCs) using MWCNT/NiS and graphene nanoplatelets as the positive and negative electrode, respectively, are reported. Nickel sulfide nanoparticles can be decorated on multiwall carbon nanotubes using a hydrothermal synthesis process, with graphene nanoplatelets obtained via a chemical route. The fabricated ACSs were operated over a potential window of 1.4 V with a specific capacitance of 181 F g −1 observed at 1 A g −1 . The ASCs were cycled at 2 A g −1 showing 92% retention of initial capacitance after 1000 cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 16723-16730 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 39 |
| Early online date | 28 Aug 2014 |
| DOIs | |
| Publication status | Published - 21 Oct 2014 |
| Externally published | Yes |
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