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Using X-ray photoelectron spectroscopy to understand the solid electrolyte interphase formation in sodium ion batteries

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dc.contributor.authorGimble, Nathan Jacob, author
dc.contributor.authorPrieto, Amy, advisor
dc.contributor.authorAckerson, Christopher, committee member
dc.contributor.authorRappe, Anthony, committee member
dc.contributor.authorPopat, Ketul, committee member
dc.date.accessioned2022-08-29T10:17:27Z
dc.date.available2022-08-29T10:17:27Z
dc.date.issued2022
dc.description.abstractSodium-ion batteries offer a more sustainable energy storage alternative to lithium while maintaining many of lithium's important characteristics. The solid electrolyte interphase (SEI) forms on the surface of the anode in both sodium and lithium-ion batteries. The SEI effects battery performance, particularly in sodium batteries, and understanding how it forms is critical for developing sodium ion batteries. Chapter I of this dissertation motivates sodium ion batteries, outlines the important differences between sodium and lithium, introduces the SEI, and establishes how the SEI is studied, ultimately placing this work in context with the field. As the SEI is derived from the electrolyte and is affected by electrolyte additives, the small molecule electrolyte additive fluoroethylene carbonate (FEC) is introduced as it is investigated throughout the dissertation. Chapter II explains how X-ray photoelectron spectroscopy can be used to study the SEI, providing examples of important protocols and pitfalls. Chapter III examines SEI formation by correlating electrochemistry from differential capacity with X-ray photoelectron spectroscopy (XPS). It is revealed that SEI species appear as a result of applied chemistry when the small molecule additive FEC is present. Without FEC, the SEI is present without significant electrochemistry in the differential capacity. Chapter IV builds off the results in Chapter III, identifying the conditions of spontaneous SEI formation due to sodium metal reactivity with the electrolyte. The spontaneous formation of the SEI is mitigated by FEC, the role of which is understood to be pre-passivation of sodium metal to prevent further electrolyte decomposition. Chapter V summarizes the work in this dissertation and outlines different directions the work can take moving forward.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierGimble_colostate_0053A_17413.pdf
dc.identifier.urihttps://hdl.handle.net/10217/235738
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2020-
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectelectrolyte
dc.subjectsolid electrolyte interphase
dc.subjectXPS
dc.subjectSEI
dc.subjectbattery
dc.subjectX-ray photoelectron spectroscopy
dc.titleUsing X-ray photoelectron spectroscopy to understand the solid electrolyte interphase formation in sodium ion batteries
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). 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).
thesis.degree.disciplineChemistry
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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