Modification of SnO2 Anodes by Atomic Layer Deposition for High Performance Lithium Ion Batteries
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Master thesis Nulati Yesibolati
Type
ThesisAuthors
Yesibolati, NulatiAdvisors
Alshareef, Husam N.
Committee members
Bakr, Osman
Traversa, Enrico

Program
Material Science and EngineeringKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2013-05Embargo End Date
2014-05-24Permanent link to this record
http://hdl.handle.net/10754/293662
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At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis became available to the public after the expiration of the embargo on 2014-05-24.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.Citation
Yesibolati, N. (2013). Modification of SnO2 Anodes by Atomic Layer Deposition for High Performance Lithium Ion Batteries. KAUST Research Repository. https://doi.org/10.25781/KAUST-31P1Yae974a485f413a2113503eed53cd6c53
10.25781/KAUST-31P1Y