Title:
Capacity and power fade in lithium-ion batteries

dc.contributor.advisor Fuller, Thomas F.
dc.contributor.advisor Yushin, Gleb
dc.contributor.author Joshi, Tapesh
dc.contributor.committeeMember Kohl, Paul A.
dc.contributor.committeeMember Hess, Dennis W.
dc.contributor.committeeMember Grover, Martha A.
dc.contributor.department Chemical and Biomolecular Engineering
dc.date.accessioned 2017-06-07T17:37:00Z
dc.date.available 2017-06-07T17:37:00Z
dc.date.created 2016-05
dc.date.issued 2016-01-13
dc.date.submitted May 2016
dc.date.updated 2017-06-07T17:37:00Z
dc.description.abstract Lithium-ion batteries are known to have performance degradation as repeated use and age of the batteries increase. It is essential to qualify these batteries to meet the performance goals for their intended applications. For batteries requiring long-term use, such as transportation applications in electrified vehicles, experimental testing for extended periods is generally not viable due to high costs associated with long-term testing. To minimize qualification times, accelerated experimental testing and mathematical modeling can be combined to elucidate long-term battery performance. In this work, we have investigated the long-term performance of lithium-ion batteries using accelerated experimental tests. We found that the dissolution of transition metals cause a reduction in cell capacity and cycle stability in full cells. Reduction of transition metal species in the negative electrode facilitated the growth of the solid electrolyte interphase (SEI) by increasing the rate of solvent diffusion through the SEI and the subsequent reduction of the solvent. Capacity and power fading phenomenon in commercial cells were found to occur in two stages that were caused by: (i) lithium loss in the SEI in the negative electrode and (ii) active material dissolution and surface layer growth on the positive electrode. Simulation results on batteries consisting of nickel cobalt manganese (NCM) positive electrode and graphite negative electrode showed good agreement with experimental data. The model was extended to validate capacity fade occurring in commercial cells via lithium loss mechanism.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/58152
dc.publisher Georgia Institute of Technology
dc.subject Lithium-ion batteries
dc.subject Capacity fade
dc.subject Power fade
dc.subject Dissolution
dc.subject Nickel cobalt manganese (NCM)
dc.subject Graphite
dc.subject Modeling
dc.subject Solid electrolyte interphase (SEI)
dc.subject Hybrid electric vehicles (HEV)
dc.subject Lithium loss
dc.subject SEI growth
dc.subject Transition metal dissolution
dc.title Capacity and power fade in lithium-ion batteries
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Fuller, Thomas F.
local.contributor.advisor Yushin, Gleb
local.contributor.corporatename School of Chemical and Biomolecular Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 1bdc8885-6fad-4aa0-8a5e-b5a6d65c5532
relation.isAdvisorOfPublication 5d76fc8c-ac2a-461f-9f18-95d72e537c74
relation.isOrgUnitOfPublication 6cfa2dc6-c5bf-4f6b-99a2-57105d8f7a6f
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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