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Title page for etd-0711112-145158


URN etd-0711112-145158 Statistics This thesis had been viewed 1445 times. Download 0 times.
Author Wei-Cheng Hung
Author's Email Address No Public.
Department Electro-Optical Engineering
Year 2011 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 118
Title Electrochemical Behavior of Nickel Oxide Composite Electrodes Prepared by Electrophoretic Deposition on Carbon Fibers
Keyword
  • Electrophoretic Depos
  • Electrochemical Capacitor
  • Electrochemical Capacitor
  • Electrophoretic Depos
  • Abstract In this research, nickel oxide (NiO)/carbon nanoflakes (CNF) composite materials used electrochemical capacitors are prepared by co-precipitation method followed by annealing on the carbon fiber cloth. Carbon nanoflakes are based on the nickel oxide that is to improve its electrochemical performances and capacitive properties in this work. After annealing the nickel oxide/hydroxide at 300 ℃, the nickel oxide crystal phase is formed and confirmed by the XRD results. Furthermore, the characterizations of structure indicate plate-like shape structure for the nickel oxide sample on after surface structure processing carbon fiber cloth that is different with the nickel oxide sample on without surface structure processing carbon fiber cloth and there are more surface area by SEM. After annealing, the cyclic voltammertry (CV) result that the nickel oxide electrode is deposited for 3 min on the carbon fiber cloth and Ni(OH)2 converts into NiO at 300 ℃ for 3 hours which has better capacitance characteristic. After deposit carbon nanoflakes, it is successfully to control the carbon nanoflakes in mesopore type and to improve the surface area will upgrade and there are more electrolyte into the electrode and more faraday chemical reaction with electrolyte.The electrochemical shows that a maximum specific capacitance of 130 Fg-1 is obtained for the NiO-based electrode without carbon nanoflakes in the scanned voltage range from 0 to 0.5 V in 0.5 M KOH solution and scan rateof 5 mVs-1. In addition, a maximum specific capacitance of 185 Fg-1 is obtained for the NiO-based composite electrode with carbon nanoflakes in the scanned voltage range from 0 to 0.5 V in 0.5 M KOH solution and scan rate of 5 mVs-1. Therefore, the specific capacitance increase about 38 % when nickel oxide based on the carbon nanoflakes.
    Advisor Committee
  • Wem-Ching Shih - advisor
  • none - co-chair
  • none - co-chair
  • Files indicate in-campus access at 5 years and off-campus not accessible
    Date of Defense 2012-06-28 Date of Submission 2012-07-11


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