Synthesis of NiO@MnO 2 core/shell nanocomposites for supercapacitor application

Junjiao Chen, Ying Huang, Chao Li, Xuefang Chen, Xiang Zhang

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

In this work, NiO@MnO 2 core/shell nanocomposites were fabricated by a two-step method. The morphology and structure of the nanocomposites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction analysis and thermal gravity analysis. In addition, the supercapacitive performances were examined by cyclic voltammogram (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS). The electrochemical results indicate that the composite exhibits a specific capacitance of 266.7 F g -1 at 0.5 A g -1 and excellent cycling stability (81.7% retention after 2000 cycles at 1 A g -1 ). Therefore, this wok offers meaningful reference for supercpacitor applications in the future.

Original languageEnglish
Pages (from-to)534-539
Number of pages6
JournalApplied Surface Science
Volume360
DOIs
StatePublished - 1 Jan 2016

Keywords

  • MnO nanosheets
  • Nanocomposites
  • NiO tube
  • Supercapacitor

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