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FABRICATION OF A SURFACE ENHANCED NICKEL ULTRACAPACITOR USING A POTASSIUM HYDROXIDE ELECTROLYTE

Womack, Robin

Abstract Details

2009, Master of Sciences, Case Western Reserve University, Chemical Engineering.
Surface enhanced nickel and potassium hydroxide have been proven to be a successful electrode and electrolyte of an ultracapacitor, respectively. The thermal reduction of nickel oxide to form nickel can generate surface enhancement up to one thousand times greater then a nickel substrate that has not been surface enhanced. Three types of nickel oxide samples were prepared: (1) thermal oxidation in air, (2) thick film screen printed nickel oxide and (3) thick film screen printed nickel oxide with a pore former. The effects of the thermal reduction of the nickel oxide were investigated using scanning electron microscopy, energy dispersive x-ray spectroscopy and x-ray diffraction. The specific capacitance of individual nickel electrodes were measured using an oscilloscope in a potassium hydroxide electrolyte. Finally, six surface enhanced nickel electodes were aligned in parallel in order to obtain an estimated capacitance of 75mF compared to an estimated specific capacitance of 0.14mF for a nickel ultracapacitor prior to surface enhancement. Each electrode in both types of ultracapacitors was 1.56cm2 in area. If these ultracapacitors were scaled up, it would be possible to build devices that could be competitive with commercially available ultracapacitors.
Chung-Chiun Liu, PhD (Advisor)
104 p.

Recommended Citations

Citations

  • Womack, R. (2009). FABRICATION OF A SURFACE ENHANCED NICKEL ULTRACAPACITOR USING A POTASSIUM HYDROXIDE ELECTROLYTE [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1232671772

    APA Style (7th edition)

  • Womack, Robin. FABRICATION OF A SURFACE ENHANCED NICKEL ULTRACAPACITOR USING A POTASSIUM HYDROXIDE ELECTROLYTE. 2009. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1232671772.

    MLA Style (8th edition)

  • Womack, Robin. "FABRICATION OF A SURFACE ENHANCED NICKEL ULTRACAPACITOR USING A POTASSIUM HYDROXIDE ELECTROLYTE." Master's thesis, Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232671772

    Chicago Manual of Style (17th edition)