A study on MnCo2S4@NiCo(OH)2 core-shell nanocomposite for high-performance solid-state supercapacitor applications

Kun Yu, W. M. Tang, J. Y. Dai

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A three-dimensional MnCo2S4@NiCo(OH)2 (MCS@NCOH) core-shell nanostructure is grown on nickel foam by a simple and facile method which includes a hydrothermal treatment and an electrochemical deposition. The MnCo2S4 (MCS) nanorod arrays not only show excellent electrochemical performance by themselves, but also use as effective scaffolds to load additional active materials for enhancing the capacitance of the electrode. After adding a thin layer of NiCo(OH)2 nanosheet on Ni foam-MnCo2S4 electrode, the mechanical stability of the whole electrode is reinforced with larger electro-active surface area, richer redox reactions and good electrical conductivity to facilitate electron transport and ion diffusion, resulting in higher charge storage capacity. The Ni foam-MnCo2S4-NiCo(OH)2 hybrid electrodes are further assembled into a solid-state supercapacitor (SC) which exhibits a high energy density of 95 mWh/m2, power density of 55.4 W/m2 and good rate capability.

Original languageEnglish
Title of host publicationEDSSC 2017 - 13th IEEE International Conference on Electron Devices and Solid-State Circuits
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-2
Number of pages2
ISBN (Electronic)9781538629079
DOIs
Publication statusPublished - 1 Dec 2017
Event13th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2017 - Hsinchu, Taiwan
Duration: 18 Oct 201720 Oct 2017

Publication series

NameEDSSC 2017 - 13th IEEE International Conference on Electron Devices and Solid-State Circuits
Volume2017-January

Conference

Conference13th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2017
CountryTaiwan
CityHsinchu
Period18/10/1720/10/17

Keywords

  • Core-shell
  • MnCoS
  • Solid-state
  • Supercapacitor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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