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Electrochemical Study of Ceramic (BaTiO3 based)/ Polymer Composite electrodes for Supercapacitor applications

Megharaj, Prabhu
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353156033

Abstract Details

2012, MS, University of Cincinnati, Engineering and Applied Science: Materials Science.
Electrochemical Supercapacitors are high energy storage devices compared to the conventional capacitors. Supercapacitors work on the simple phenomena of electrostatics and electrochemistry helping to harvest energy in a greener way. This research explores supercapacitive properties of the BaTiO3 system as it already is a good dielectric material. Being a non – conductive system, calcination treatments were done on Nd doped BaTiO3 to make it conductive enough to be a supercapacitive electrode. The effect of calcination and graphite inclusion into the BaTiO3 system (CBTG) as a composite was studied. The polymer – ceramic three way composite system was studied at varying polymer and the ceramic mixture composition. A novel sandwich type electrochemical cell setup was developed to study the supercapacitor cell. The Nd doped BaTiO3 material was synthesized by ball milling and spray drying. The composites were prepared by partial solution mixing. A novel technique called partial solution mixing method, which incorporates physical milling in a selected liquid medium, was successfully developed to prepare the composite electrode specimens. The performance of the two polymers (acrylonitrile butadiene styrene and polyaniline) was studied in the BaTiO3 system, exploiting respective non conductive and conductive nature of the polymers. The supercapcitor electrode composites were characterized through cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentimetry, for performance, and also through XRD, SEM and EDS for structure – property correlations. The effect of electrolyte, separator membrane and cycle life were also studied for the composite systems. Energy and power density calculations were used to assess the practical applications of the system.
Relva Buchanan, Sc.D. (Committee Chair)
Rodney Roseman, Ph.D. (Committee Member)
Dale Schaefer, Ph.D. (Committee Member)
106 p.
Materials Science
Supercapacitor; Barium Titanate; Partial Solution Mixing; Pseudocapacitance; Cyclic Voltammetry; ;

Recommended Citations

Citations

  • Megharaj, P. (2012). Electrochemical Study of Ceramic (BaTiO3 based)/ Polymer Composite electrodes for Supercapacitor applications [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353156033

    APA Style (7th edition)

  • Megharaj, Prabhu. Electrochemical Study of Ceramic (BaTiO3 based)/ Polymer Composite electrodes for Supercapacitor applications. 2012. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353156033.

    MLA Style (8th edition)

  • Megharaj, Prabhu. "Electrochemical Study of Ceramic (BaTiO3 based)/ Polymer Composite electrodes for Supercapacitor applications." Master's thesis, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353156033

    Chicago Manual of Style (17th edition)

ucin1353156033
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© 2012, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.