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Design of Thin-Film Interlayer between Silicon Electrode and Current Collector Using a Chemo-Mechanical Degradation Model

Title
Design of Thin-Film Interlayer between Silicon Electrode and Current Collector Using a Chemo-Mechanical Degradation Model
Authors
Appiah, Williams AgyeiRoh, YoungjoonDzakpasu, Cyril BubuRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2020-05
Citation
Journal of the Electrochemical Society, 167(8), 080542
Type
Article
Article Type
Article
Author Keywords
Silicon anodeCapacity fade modelThin film interlayerDelaminationLithium ion batteries
Keywords
ELECTROCHEMICAL PERFORMANCEBATTERY ANODESHIGH-CAPACITYCYCLE LIFELITHIUMINTERPHASECHEMISTRYMECHANISMADHESIVEBINDER
ISSN
0013-4651
Abstract
To enhance delamination limitations in silicon electrode, a thin-film interlayer between silicon electrode and copper current collector is designed using a chemo-mechanical degradation model. The chemo-mechanical degradation model considers the formation of the solid electrolyte interphase on the surface and within the cracks of the silicon electrode, the physical isolation of active materials and the resistance due to loss of contact between the silicon composite electrode and the copper foil as the main capacity fading mechanisms. The model is validated with experimental data collected from coin cells made of silicon electrode with a bare and an adhesive thin film laminated copper foil. The reduction in the delamination limitations depends on the interplay of the adhesion strength, conductivity, coverage and thickness of adhesive thin film on the surface of the copper foil. © 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
URI
http://hdl.handle.net/20.500.11750/12108
DOI
10.1149/1945-7111/ab9382
Publisher
Electrochemical Society, Inc.
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Electrode; Electrolyte; Separator; Simulation
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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