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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18082
Title: Micromechanisms of capacity fade in silicon anode for lithium-ion batteries
Authors: Pal S.
Damle S.
Patel S.
Dutta M.K.
Kumta P.N.
Maiti S.
Published in: Proceedings of ECS Transactions
Abstract: Large volume change and associated stress generation is known to cause failure of the silicon thin film anode used for Lithium-ion batteries after a few cycles. Experimental observations suggest that plastic deformation of the underlying Cu substrate and degradation of the active/inactive interface are the primary reasons responsible for the capacity fade. The goal of the present study is to examine the interplay between these mechanisms using a computational mechanics approach. In the present study, a novel multi-physics finite element framework has been developed to simulate the lithiation and de-lithiation induced failure of amorphous Si (a-Si) thin film on Cu foil. The numerical framework is based on the finite deformation of the active silicon wherein diffusion of lithium occurs, plastic deformation of the Cu foil, and debonding of the active/inactive interface. The effect of substrate property, interfacial energy and kinetics of interface degradation has been examined. © The Electrochemical Society.
Citation: Proceedings of ECS Transactions, (2012), 87- 99. Boston, MA
URI: https://doi.org/10.1149/1.3687394
http://repository.iitr.ac.in/handle/123456789/18082
Issue Date: 2012
Keywords: Experimental observation
Finite deformations
Interface degradation
Lithium-ion battery
Micromechanisms
Silicon thin film
Stress generation
Substrate properties
Computational mechanics
Interfaces (materials)
Lithium batteries
Metal cladding
Plastic deformation
Silicon
Thin films
Amorphous silicon
ISBN: 9.78E+12
ISSN: 19385862
Author Scopus IDs: 35321222100
55568706200
23111442300
57203250678
55663968300
7202014965
Author Affiliations: Pal, S., Department of Bioengineering, University of Pittsburgh, PA 15261, United States
Damle, S., Department of Chemical Engineering, University of Pittsburgh, PA 15261, United States
Patel, S., Department of Mechanical Engineering, Michigan Technological University, MI 49931, United States
Dutta, M.K., Department of Bioengineering, University of Pittsburgh, PA 15261, United States
Kumta, P.N., Department of Bioengineering, University of Pittsburgh, PA 15261, United States, Department of Chemical Engineering, University of Pittsburgh, PA 15261, United States, Mechanical Engineering and Materials Science, University of Pittsburgh, PA 15261, United States
Maiti, S., Department of Bioengineering, University of Pittsburgh, PA 15261, United States
Corresponding Author: Pal, S.; Department of Bioengineering, University of Pittsburgh, PA 15261, United States
Appears in Collections:Conference Publications [ME]

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