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Biomass-derived wearable energy storage systems based on poplar tree-cotton fibers coupled with binary nickel-cobalt nanostructures

Hekmat, F ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1039/c9se00565j
  3. Publisher: Royal Society of Chemistry , 2020
  4. Abstract:
  5. We hereby demonstrate symmetric and asymmetric supercapacitors (SSCs and ASCs) based on core/shell-like Ni-Co oxide@cotton//Fe2O3-carbon nanotubes@cotton that are capable of storing a remarkable amount of energy, while retaining a high power density and long cycle life. Hierarchical, porous structures of Ni-Co-O nano-rod (NR) decorated Pd-activated cotton fibers (CFs) were fabricated using an eco-benign hydrothermal method and directly used as the cathode of the supercapacitors. Fe2O3-single-wall carbon nanotube (SWCNT) decorated CFs were employed as anodes of the fabricated ASCs. The assembled Ni-Co-O@cotton//Fe2O3-SWCNTs@cotton based ASCs possessed the benefits of a relatively high energy density of 16.3 W h kg-1 at a reasonable power density of 600 W kg-1 while showing remarkable cycling durability, retaining around 85% of their initial specific capacity after 4000 charge-discharge cycles. The capacitive performance of the fabricated Ni-Co-O@cotton//Fe2O3-SWCNTs@cotton based ASCs was preserved even if they were bent or folded. We believe that the fabricated ASCs are promising storage devices for practical applications in high-performance wearable electronics. © 2020 The Royal Society of Chemistry
  6. Keywords:
  7. Binary trees ; Cobalt compounds ; Cobalt deposits ; Cotton fibers ; Electrodes ; Fabrication ; Hematite ; Iron alloys ; Nanorods ; Nanotubes ; Nickel oxide ; Palladium compounds ; Single-walled carbon nanotubes (SWCN) ; Supercapacitor ; Virtual storage ; Wearable technology ; Asymmetric supercapacitor ; Capacitive performance ; Charge-discharge cycle ; Energy storage systems ; High energy densities ; High power density ; Hydrothermal methods ; Specific capacities ; Cotton ; Aboveground biomass ; Biomass ; Carbon nanotube ; Energy storage ; Equipment ; Iron oxide ; Performance assessment ; Gossypium arboreum ; Gossypium hirsutum ; Populus
  8. Source: Sustainable Energy and Fuels ; Volume 4, Issue 2 , 2020 , Pages 643-654
  9. URL: https://pubs.rsc.org/en/content/articlelanding/2020/se/c9se00565j#!divAbstract