Hydrothermal preparation of ZnO electrodes synthesized from different precursors for electrochemical supercapacitors

Alver U., Tanriverdi A., Akgul O.

SYNTHETIC METALS, cilt.211, ss.30-34, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 211
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.synthmet.2015.11.008
  • Dergi Adı: SYNTHETIC METALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30-34
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this work, zinc oxide (ZnO) particles have been synthesized by hydrothermal technique using three different types of precursor solutions namely; zinc acetate, zinc chloride and zinc nitrate for active materials of supercapacitor (SC) electrode. The SC properties of ZnO powders were studied as a function precursor solution. The physical properties of the ZnO particles were analyzed with X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. The electrochemical properties of the ZnO particles obtained from different precursors were investigated through cyclic voltammetry, galvanostatic charge/discharge measurements in a 6 M KOH electrolyte at a scan rate of 5 mV/s. The specific capacitance values of the ZnO electrodes obtained from nitrate, acetate and chloride precursor solutions were measured to be 5.87 F/g, 5.35 F/g and 4.14 F/g, respectively. (C) 2015 Elsevier B.V. All rights reserved.