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The solid state conversion reaction of cobalt oxide and iron fluoride thin films
Descriptive
TitleInfo
Title
The solid state conversion reaction of cobalt oxide and iron fluoride thin films
Name
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Thorpe
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Ryan
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Ryan Thorpe
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author
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Bartynski
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Robert A
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Robert A Bartynski
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Advisory Committee
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chair
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Gustafsson
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Torgny
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Torgny Gustafsson
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Advisory Committee
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internal member
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Vanderbilt
NamePart
(type = given)
David
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David Vanderbilt
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Advisory Committee
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(authority = RULIB)
internal member
Name
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(type = family)
Pryor
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(type = given)
Carlton
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Carlton Pryor
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Advisory Committee
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internal member
Name
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Bernasek
NamePart
(type = given)
Steven L
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Steven L Bernasek
Affiliation
Advisory Committee
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outside member
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Rutgers University
Role
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degree grantor
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Graduate School - New Brunswick
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school
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Text
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theses
OriginInfo
DateCreated
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2016
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2016-10
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2016
Place
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xx
Language
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eng
Abstract
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Iron (II) fluoride and cobalt (II) oxide are candidate electrode materials for a new class of rechargeable lithium ion batteries known as conversion batteries. Although the energy storage capacity of these materials represents a significant improvement over that of conventional electrode materials, many challenges must be overcome before conversion batteries can become commercially viable. Chief among these challenges is a loss of energy storage capacity as a function of the number of charge-discharge cycles. In this study, FeF2 and CoO thin films have been studied as solid state analogues for lithium ion battery electrodes. These films were grown with different crystalline orientations and exposed to lithium in an ultra high vacuum chamber in order to simulate the discharge of a conversion electrode. The electronic structure and chemical phase of the films before and after exposure to lithium were characterized using x-ray photoemission spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS), and inverse photoemission spectroscopy (IPS). The depth and homogeneity of the conversion reaction in the thin films was measured as a function of lithium exposure using angle-resolved XPS (ARXPS). The crystalline structure and morphology were studied using scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). For polycrystalline FeF2 and CoO films, the products of the solid state conversion reactions were similar to those observed in electrochemical measurements. However, parasitic reaction pathways were identified for both reactions. The products of these reaction were found to inhibit the full conversion of the thin films, and are possibly responsible for the poor reaction kinetics in electrochemical cells. Furthermore, the diffusion of lithium into the FeF2 and CoO surfaces, and the concomitant conversion reaction, was found to depend strongly on the orientation of the surface. These differences in diffusivity could partially be explained through geometric analyses of the crystalline structure of the films.
Subject
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Topic
Physics and Astronomy
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
Identifier
ETD_7626
PhysicalDescription
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electronic resource
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application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xi, 128 p. : ill.)
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Subject
(authority = ETD-LCSH)
Topic
Lithium
Subject
(authority = ETD-LCSH)
Topic
Thin films
Note
(type = statement of responsibility)
by Ryan Thorpe
RelatedItem
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
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doi:10.7282/T3W0989X
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
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The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Thorpe
GivenName
Ryan
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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2016-09-25 21:24:40
AssociatedEntity
Name
Ryan Thorpe
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
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windows xp
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2016-05-27T10:34:50
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2016-05-27T10:34:50
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