Synthesis and characterization of scalable high permittivity core-shell ferroelectric polymers for energy storage solutions

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dc.contributor.advisorIgnatiev, Alex
dc.contributor.committeeMemberBadi, Nacer
dc.contributor.committeeMemberFreundlich, Alex
dc.contributor.committeeMemberRobles Hernandez, Francisco C.
dc.creatorMekala, Rakesh 1991-
dc.date.accessioned2016-02-15T02:55:30Z
dc.date.available2016-02-15T02:55:30Z
dc.date.createdDecember 2013
dc.date.issued2013-12
dc.date.updated2016-02-15T02:55:31Z
dc.description.abstractExtensive interest is being invested into the research of polymer based nanodielectric films that provides a more practical energy storage solution primarily for embedded capacitors. Electrical dielectric constant (K) around 20 was reported using expensive gold (Au) coated with functionalized polystyrene (SiO2) shell i.e.;(Au-SiO2) nanoparticles inside a Polyvinylpyrrolidone (PVP) polymer matrix. This process has been improved as reported here by eliminating trivial functionalization steps to create a shell around a core by embedding a Polyvinilydine fluoride (PVDF) matrix, which is chemically inert to most solvents, with metal aluminum (Al) core nanoparticles surrounded by solid aluminum oxide (Al2O3) as a capping shell for electrical insulation. Preliminary results show that proper loadings of oxidized aluminum (Al-Al2O3) nanoparticles in PVDF provide an improved dielectric constant and quality factor along with added structural flexibility. The dielectric constant, quality factor, frequency and thermal response of capacitance on structural parameters of the produced films for different loadings of embedded nanoparticles has been investigated. The effective dielectric constant of the nanocomposite has been modeled using COMSOL Multiphysics, and compared with experimental results. Also other dielectric properties of the nanocomposite have been studied using the simulation results.
dc.description.departmentElectrical and Computer Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/1197
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectNano dielectrics
dc.subjectCore-shell nanoparticles
dc.subjectEnergy storage
dc.subjectEmbedded capacitors
dc.titleSynthesis and characterization of scalable high permittivity core-shell ferroelectric polymers for energy storage solutions
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentElectrical and Computer Engineering, Department of
thesis.degree.disciplineElectrical Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science in Electrical Engineering

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