Synthesis and controlled sulfidation of Ni-Co alloy on reduced graphene oxide as an electrode with enhanced conductivity and capacitance for supercapacitors

Pin Ru Wu, Chieh Lun Wu, Dong Hwang Chen

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In this study, the partially sulfidized Ni-Co/reduced graphene oxide (NCS/NC/RGO) hybrid was developed as a supercapacitor electrode material. Because Ni-Co sulfide (NCS) possessed good pseudocapacitor property and non-sulfidized Ni-Co (NC) alloy had high conductivity, we attempted to optimize the electrochemical performance of NCS/NC/RGO hybrid by controlling the sulfidation of NC/RGO hybrid. RGO was incorporated as a substrate to help the dispersion of NCS/NC nanoparticles and contribute some capacitance. It was demonstrated that an appropriate sulfidation of NC/RGO hybrid could lead to the highest capacitance effectively. Moreover, the optimal NCS/NC/RGO hybrid also exhibited good stability. The result revealed that the strategy to optimize the capacitor performance of NCS/NC/RGO hybrid via the controlled sulfidation of NC/RGO hybrid was indeed effective.

Original languageEnglish
Pages (from-to)409-416
Number of pages8
JournalJournal of Alloys and Compounds
Volume735
DOIs
Publication statusPublished - 2018 Feb 25

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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