Hybrid energy storage device from binder-free zinc-cobalt sulfide decorated biomass-derived carbon microspheres and pyrolyzed polyaniline nanotube-iron oxide

Date

2020-03-01

Author

Hekmat, Farzaneh
Hosseini, Hadi
Shahrokhian, Saeed
Ünalan, Hüsnü Emrah

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

146
views

0
downloads

High-performance supercapacitors that merit superior power and energy densities, as well as long-term cycle durability are always of great significance as a building block of energy storage devices. Herein, an innovative strategy is developed to design hierarchical and unique porous structures of ternary metal sulfide nano-flake decorated porous hydrothermal carbon microspheres. Hierarchical microspheres of ternary zinc-cobalt sulfide nanosheet (NS) decorated biomass derived hydrothermal carbon spheres (HTCSs) are directly employed as the positive supercapacitor electrodes. In addition, composites of pyrolyzed polyaniline nanotubes (PPNTs) and iron oxide, receiving advantages from highly porous structure and modification of nitrogen as a heteroatom are used as the negative electrodes in the fabricated asymmetric supercapacitors (ASC). The assembled Zn-Co-S@HTCSs//Fe2O3@PPNTs asymmetric supercapacitor with a broad potential window not only delivered superior energy density (85.12 Wh.kg(-1)) a a reasonable power density of 460 W kg(-1) but also rendered reasonable cycle durability. The advanced asymmetric design together with encouraging results presented herein makes these supercapacitors immensely promising for high-performance electronics.

Subject Keywords

Asymmetric supercapacitors, Pyrolyzed polyaniline nanotubes, Zinc-cobalt sulfide nanosheets, Biomass-derived hydrothermal carbons

URI

https://hdl.handle.net/11511/46744

Journal

ENERGY STORAGE MATERIALS

DOI

https://doi.org/10.1016/j.ensm.2019.09.022

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Scalable, microwave-assisted decoration of commercial cotton fabrics with binary nickel cobalt sulfides towards textile-based energy storage Hekmat, Farzaneh; Balim, Umur; Ünalan, Hüsnü Emrah (2022-02-01) High-performance textile-based energy storage systems with high energy and power densities alongside remarkable cyclic life are always at the leading edge of wearable electronics. Herein, commercial cotton fabrics (CCFs) are used as the substrates for the fabrication of ultra-light, high-performance wearable supercapacitors. Hierarchical microstructures of nickel-cobalt sulfide (Ni-Co-S) decorated single-walled carbon nanotubes (SWCNTs) are used as the positive supercapacitor electrodes. Enhanced electroche...
Smart sensing system for enhanceing reliability of power electronic devices used in wind turbines Teay, S. H.; Batunlu, C.; Albarbar, A. (2017-06-01) Reliability of modern power systems, in particular those use wind and solar energies, is affected by the relatively short lifetime of the associated power electronic converters (PECs). Thermal stress has been identified as one of the commonest causes for failures in PECs. However, existing thermal monitoring systems are expensive, bulky and with no intelligent capabilities, which limit their full acceptance as monitoring and control tools in operational power plants. This work presents autonomous and inexpe...
Electrochemical performance and modeling of lithium-sulfur batteries with varying carbon to sulfur ratios Michaelis, Charles; Erisen, Nisa; PALA, DAMLA EROĞLU; Koenig, Gary M. (Wiley, 2019-02-01) Lithium-sulfur batteries have attracted much research interest because of their high theoretical energy density and low-cost raw materials. While the electrodes are composed of readily available materials, the processes that occur within the cell are complex, and the electrochemical performance of these batteries is very sensitive to a number of cell processing parameters. Herein, a simple electrochemical model will be used to predict, with quantitative agreement, the electrochemical properties of lithium-s...
Experimental analysis of energy storage device using phase change material integrated with a milk storage system Nıma, Bonyadı; Somek, Suleyman Kazım; C Cıhan, Ozalevlı; Baker, Derek Keıth; Tarı, İlker (null; 2015-08-12) Phase change materials (PCMs) have the advantage of storing latent heat at constant temperature and can possess higher energy storage densities in comparison to materials storing sensible heat. Due to these features, latent heat Thermal Energy Storage (TES) devices using PCMs are widely used to store heat in thermal systems. The aim of this study is to experimentally investigate the performance of water PCM in an improved milk storage cooling cycle integrated with a TES device. In this prototype, water is u...
Biomass-derived wearable energy storage systems based on poplar tree-cotton fibers coupled with binary nickel-cobalt nanostructures Hekmat, Farzaneh; Ünalan, Hüsnü Emrah; Shahrokhian, Saeed (2020-02-01) 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 nan...

Citation Formats

F. Hekmat, H. Hosseini, S. Shahrokhian, and H. E. Ünalan, “Hybrid energy storage device from binder-free zinc-cobalt sulfide decorated biomass-derived carbon microspheres and pyrolyzed polyaniline nanotube-iron oxide,” ENERGY STORAGE MATERIALS, pp. 621–635, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46744.