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A Physics-Based Model Capacity Fade Analysis of LiMn2O4/Graphite Cell at Different Temperatures

Title
A Physics-Based Model Capacity Fade Analysis of LiMn2O4/Graphite Cell at Different Temperatures
Authors
Appiah, Williams AgyeiRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2018-11
Citation
Journal of the Electrochemical Society, 166(3), A5109-A5116
Type
Article
Article Type
Article; Proceedings Paper
Keyword
LI-ION CELLS; CATHODE MATERIALS; SPINEL; MANGANESE; SIMULATION; DISSOLUTION; OPTIMIZATION; PERFORMANCE; RETENTION; STABILITY
ISSN
0013-4651
Abstract
The capacity fading behavior of a LiMn 2 O 4 /graphite lithium ion cells at different temperatures is analyzed using a physicsbased porous composite electrode model and a parameter estimation technique. The parameter estimation technique is used to extract capacity fade dependent model parameters from experimental cycling data. Although the capacity fading mechanism of the LiMn 2 O 4 /graphite lithium ion cells are greatly influenced by temperature, major capacity fading mechanism is closely related to the trapping of Li ions into solid electrolyte interphase on the graphite negative electrode and the reduction in the volume fraction of the active material in the LiMn 2 O 4 positive electrode. At 25°C, the dominant capacity fading mechanisms is the formation of the solid electrolyte interphase while at 60°C the dominant capacity fading mechanism is the reduction in the volume fraction of the positive active material. The efficacy of the physics-based composite electrode model is validated with experimental discharge profiles obtained from cells cycled at 25 and 60°C. © The Author(s) 2018. Published by ECS.
URI
http://hdl.handle.net/20.500.11750/9507
DOI
10.1149/2.0161903jes
Publisher
Electrochemical Society, Inc.
Related Researcher
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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