FUNCTIONALIZATION AND CHARACTERIZATION OF NOVEL COORDINATION COMPLEXES FOR USE IN SUPERCAPACITORS

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Zuczek, J. (2018). FUNCTIONALIZATION AND CHARACTERIZATION OF NOVEL COORDINATION COMPLEXES FOR USE IN SUPERCAPACITORS. Unc Charlotte Electronic Theses And Dissertations.
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Abstract

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.

Details
Author

Zuczek, Justin

Title

FUNCTIONALIZATION AND CHARACTERIZATION OF NOVEL COORDINATION COMPLEXES FOR USE IN SUPERCAPACITORS

Physical Description

1 online resource (141 pages) : PDF

Date

2018

Degree Granting Institution

University of North Carolina at Charlotte

Abstract

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.

Genre

masters theses

Subjects--Topics

Materials science
Power resources

Degree

M.S.

Keywords

Colloids
Energy Storage
Molecular Spacers
Nanomaterials
Supercapacitors
Surface Science

Subject Area

Chemistry

Advisor(s)

Poler, Jordan

Committee Members

Walter, Michael
Schmedake, Thomas
Parkhideh, Babak

Degree Note

Thesis (M.S.)--University of North Carolina at Charlotte, 2018.

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Rights Holder Information

Copyright is held by the author unless otherwise indicated.

Identifier

Zuczek_uncc_0694N_11817

Permalink

http://hdl.handle.net/20.500.13093/etd:429