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Effects of polymeric binders on electrochemical performances of spinel lithium manganese oxide cathodes in lithium ion batteries

Title
Effects of polymeric binders on electrochemical performances of spinel lithium manganese oxide cathodes in lithium ion batteries
Authors
Lee, S[Lee, Sangmin]Kim, EY[Kim, Eun-Young]Lee, H[Lee, Hochun]Oh, ES[Oh, Eun-Suok]
DGIST Authors
Kim, EY[Kim, Eun-Young]; Lee, H[Lee, Hochun]
Issue Date
2014-12-10
Citation
Journal of Power Sources, 269, 418-423
Type
Article
Article Type
Article
Keywords
BinderBindersDissolutionElectrochemical PerformanceElectrodesElectrolytesHigh Thermal StabilityLithiumLithium BatteriesManganeseManganese DissolutionManganese OxideOxidesPhysicochemical PropertyPoly (Vinyl Alcohol) (PVA)PolyacrylonitrilePolyacrylonitrile (PAN)PolyacrylonitrilesPolymersPolyvinylidene FluoridesSpinel Lithium Manganese OxideSpinel Lithium Manganese OxidesThermodynamic Stability
ISSN
0378-7753
Abstract
Effects of polymeric binders on both the dissolution of manganese (Mn) and electrochemical properties of spinel LiMn2O4 (LMO) electrodes are investigated in detail. Three promising polymers, polyvinyl alcohol (PVA), polyacrylic acid (PAA), and polyacrylonitrile (PAN) are chosen as binders for the LMO electrodes and compared to currently popular polyvinylidene fluoride (PVdF). For LMO electrodes fabricated with the selected binders, physicochemical properties including surface coverage, adhesion strength, and electrolyte uptake are examined. Also, electrochemical performance factors such as Mn dissolution behavior, rate capability, cycle performance, and thermal stability are investigated. PAN is revealed to be an outstanding binder for LMO electrodes based on its excellent rate capability, superior cycle performance, and high thermal stability when compared to the other three binders. This can be ascribed to an appropriate amount of electrolyte uptake and low impedance of the PAN despite the relatively large surface coverage of the LMO that leads to lower Mn dissolution. © 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2987
DOI
10.1016/j.jpowsour.2014.06.167
Publisher
Elsevier B.V.
Related Researcher
  • Author Lee, Ho Chun Electrochemistry Laboratory for Sustainable Energy(ELSE)
  • Research Interests Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학
Files:
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Collection:
Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles


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