Facile synthesis of single-crystal mesoporous CoNiO2 nanosheets assembled flowers as anode materials for lithium-ion batteries

Yanguo Liu, Yanyan Zhao, Yanlong Yu, Mashkoor Ahmad, Hongyu Sun

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Mesoporous CoNiO2 microflowers assembled with single-crystal nanosheets were successfully synthesized by a hydrothermal method and subsequent annealing process and their lithium storage capacity were investigated. The structural and compositional analysis of the mesoporous CoNiO2 microflowers has been studied by X-ray diffraction, field emission scanning electron microscopy and high-resolution transmission electron microscopy. The Bruauer-Emmett-Teller specific surface area of CoNiO2 microflowers has been calculated by the nitrogen isotherm curve and pore size distribution has been determined by the Barret-Joyner-Halenda method. It has been found that the as-prepared CoNiO2 electrodes delivered satisfied capacity, good cycling stability and rate capability. The improved electrochemical performance is attributed to the mesoporous nature and the 3D assembled structure. Therefore, such a structure can be considered to be an attractive candidate as an electrode material for lithium-ion batteries. © 2014 Elsevier Ltd.
Original languageEnglish
JournalElectrochimica Acta
Volume132
Pages (from-to)404-409
Number of pages6
ISSN0013-4686
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Mesoporous
  • CoNiO2 microflowers
  • Hydrothermal
  • Lithium-ion batteries

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