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dc.contributor.authorBurns, John Christopher
dc.date.accessioned2011-08-25T14:09:08Z
dc.date.available2011-08-25T14:09:08Z
dc.date.issued2011-08-25
dc.identifier.urihttp://hdl.handle.net/10222/14115
dc.descriptionMSc. Thesisen_US
dc.description.abstractThe aim of this thesis is to develop a better understanding about the degradation mechanisms occurring within lithium-ion cells which eventually lead to their failure. An introduction to the components and operation of Li-ion cells is followed by proposed degradation mechanisms which limit the lifetime of cells. These mechanisms and how they can be identified from electrochemical testing are discussed. Electrolyte additives can be used to improve the safety of Li-ion cells or decrease the rate of cell degradation. Different types of additives and testing methods are discussed followed by an introduction to high precision coulometry which can be used to detect the impact of additives on cycling performance. The High Precision Charger that was constructed for this project is described and shown to meet the desired precision. The use of additives and different materials to extend lifetime of cells is shown to be detectable through the use of high precision coulometry. High precision coulometry proves to be a more efficient way of estimating the lifetime of cells under realistic conditions in a reasonably short amount of time.en_US
dc.language.isoenen_US
dc.subjectLi-ion batteriesen_US
dc.subjectElectrolyte additivesen_US
dc.titleHIGH PRECISION COULOMETRY AS A TECHNIQUE FOR EVALUATING THE PERFORMANCE AND LIFETIME OF LI-ION BATTERIESen_US
dc.date.defence2011-08-12
dc.contributor.departmentDepartment of Physics & Atmospheric Scienceen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinerN/Aen_US
dc.contributor.graduate-coordinatorDr. Randall Martinen_US
dc.contributor.thesis-readerDr. Mark Obrovacen_US
dc.contributor.thesis-readerDr. Rich Dunlapen_US
dc.contributor.thesis-supervisorDr. Jeff Dahnen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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