Modification of SnO2 Anodes by Atomic Layer Deposition for High Performance Lithium Ion Batteries

Handle URI:
http://hdl.handle.net/10754/293662
Title:
Modification of SnO2 Anodes by Atomic Layer Deposition for High Performance Lithium Ion Batteries
Authors:
Yesibolati, Nulati
Abstract:
Tin dioxide (SnO2) is considered one of the most promising anode materials for Lithium ion batteries (LIBs), due to its large theoretical capacity and natural abundance. However, its low electronic/ionic conductivities, large volume change during lithiation/delithiation and agglomeration prevent it from further commercial applications. In this thesis, we investigate modified SnO2 as a high energy density anode material for LIBs. Specifically two approaches are presented to improve battery performances. Firstly, SnO2 electrochemical performances were improved by surface modification using Atomic Layer Deposition (ALD). Ultrathin Al2O3 or HfO2 were coated on SnO2 electrodes. It was found that electrochemical performances had been enhanced after ALD deposition. In a second approach, we implemented a layer-by-layer (LBL) assembled graphene/carbon-coated hollow SnO2 spheres as anode material for LIBs. Our results indicated that the LBL assembled electrodes had high reversible lithium storage capacities even at high current densities. These superior electrochemical performances are attributed to the enhanced electronic conductivity and effective lithium diffusion, because of the interconnected graphene/carbon networks among nanoparticles of the hollow SnO2 spheres.
Advisors:
Alshareef, Husam N.
Committee Member:
Bakr, Osman ( 0000-0002-3428-1002 ) ; Traversa, Enrico ( 0000-0001-6336-941X )
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Program:
Materials Science and Engineering
Issue Date:
May-2013
Type:
Thesis
Appears in Collections:
Theses; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.advisorAlshareef, Husam N.en
dc.contributor.authorYesibolati, Nulatien
dc.date.accessioned2013-06-09T18:29:51Z-
dc.date.available2013-06-09T18:29:51Z-
dc.date.issued2013-05en
dc.identifier.urihttp://hdl.handle.net/10754/293662en
dc.description.abstractTin dioxide (SnO2) is considered one of the most promising anode materials for Lithium ion batteries (LIBs), due to its large theoretical capacity and natural abundance. However, its low electronic/ionic conductivities, large volume change during lithiation/delithiation and agglomeration prevent it from further commercial applications. In this thesis, we investigate modified SnO2 as a high energy density anode material for LIBs. Specifically two approaches are presented to improve battery performances. Firstly, SnO2 electrochemical performances were improved by surface modification using Atomic Layer Deposition (ALD). Ultrathin Al2O3 or HfO2 were coated on SnO2 electrodes. It was found that electrochemical performances had been enhanced after ALD deposition. In a second approach, we implemented a layer-by-layer (LBL) assembled graphene/carbon-coated hollow SnO2 spheres as anode material for LIBs. Our results indicated that the LBL assembled electrodes had high reversible lithium storage capacities even at high current densities. These superior electrochemical performances are attributed to the enhanced electronic conductivity and effective lithium diffusion, because of the interconnected graphene/carbon networks among nanoparticles of the hollow SnO2 spheres.en
dc.language.isoenen
dc.subjectlithium ion batteryen
dc.subjecttin dioxideen
dc.subjectatomic layer dispositionen
dc.subjectanode materialsen
dc.subjectultrathin metal oxidesen
dc.titleModification of SnO2 Anodes by Atomic Layer Deposition for High Performance Lithium Ion Batteriesen
dc.typeThesisen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberBakr, Osmanen
dc.contributor.committeememberTraversa, Enricoen
thesis.degree.disciplineMaterials Science and Engineeringen
thesis.degree.nameMaster of Scienceen
dc.person.id118419en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.