FUNCTIONALIZATION AND CHARACTERIZATION OF NOVEL COORDINATION COMPLEXES FOR USE IN SUPERCAPACITORS
1 online resource (141 pages) : PDF
University of North Carolina at Charlotte
As society begins to move away from fossil fuel consumption and the harmful effects they entail, renewable energy sources have been studied extensively over the past decades. One obstacle with renewable energy is the ability to cheaply store it during intermittency, i.e., solar and wind energy production. Commercially available supercapacitors do not store enough energy to be practical in a consumer or grid-scale application, but their light weight, low cost, and small volume makes them attractive as energy storage devices. This research describes the goal of increasing capacitance by incorporating nanostructured carbon, specifically Single-Walled Carbon Nanotubes (SWCNTs), as electrodes in supercapacitors. Electronically conductive molecular spacers intercalate between SWCNTs to maintain porosity and increase ion-accessible surface area. Specific capacitance of functionalized SWCNTs were measured to be ~ 30 F g-1. In collaboration with the Southern Federal University in Rostov-on Don, Russia, new molecular spacers that have ideal electrical double layer and pseudocapacitive properties were studied. A full structural characterization of five Earth abundant metal centered coordination complexes is discussed. Electrochemical characterization, binding isotherms and kinetics, and dispersion stability of one molecular spacer compared to previous results is presented. Understanding the properties of nanomaterials that affect charge storage will help us better optimize the charge storage capabilities of supercapacitors.
COLLOIDSENERGY STORAGEMOLECULAR SPACERSNANOMATERIALSSUPERCAPACITORSSURFACE SCIENCE
Walter, MichaelSchmedake, ThomasParkhideh, Babak
Thesis (M.S.)--University of North Carolina at Charlotte, 2018.
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). For additional information, see http://rightsstatements.org/page/InC/1.0/.
Copyright is held by the author unless otherwise indicated.