Ternary metal oxysulfide-based 3D yarn electrodes for aqueous cable-type hybrid electrochemical cells

Hemachandra Rao Goli, M. V. Basaveswara Rao, Nandarapu Purushotham Reddy, Mohan Reddy Pallavolu, Peng Wu, Young Kyu Han, Ganji Seeta Rama Raju, Parvez Ahmad Alvi

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

High-mass loading fiber-type three-dimensional (3D) electrodes with improved energy storage properties have attracted widespread attention in developing the feasible hybrid supercapacitors. Herein, we fabricated the porous 3D nickel foam-like microarchitectures on braided Ni wires (NF wires) followed by facile growth of ternary manganese-doped nickel–cobalt oxysulfide nanostructures (MNC OS/NF wires). The electrochemical properties in alkaline electrolyte revealed the battery-type redox performance of MNC OS/NF wires with a high capacity of 185.4 mAh/g at the discharge current of 3 mA and good cycling durability of 94.8% after 4000 charge–discharge cycles. Moreover, the liquid-electrolyte mediated cable-type hybrid cell was assembled with the battery-type MNC OS/NF wires and capacitive-type activated carbon. Specifically, hybrid supercapacitor showed a maximum cell voltage of 1.6 V with high energy and power densities of 31.5 Wh/kg and 2616.3 W/kg, respectively. Having high mass loading and excellent electrochemical activity of MNC OS nanostructures with high ionic conductivity of the liquid electrolyte, the cable-type hybrid device showed superior energy storage properties, which are useful to energize portable electronic display and light-emitting diodes for a long time. The obtained results suggest that the porous conductive architectures with excellent redox activity of battery-type ternary electrodes are promising for the development of high-performance energy storage applications.

Original languageEnglish
Article number137347
JournalChemical Engineering Journal
Volume446
DOIs
StatePublished - 15 Oct 2022

Keywords

  • Braided wires
  • Cable-type hybrid cell
  • Hybrid supercapacitor
  • Liquid electrolyte
  • Porous architectures
  • Ternary metal oxysulfide

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