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Effects of vinylene carbonate and 1,3-propane sultone on high-rate cycle performance and surface properties of high-nickel layered oxide cathodes

Title
Effects of vinylene carbonate and 1,3-propane sultone on high-rate cycle performance and surface properties of high-nickel layered oxide cathodes
Authors
Oh, JiminKim, JumiLee, Yong MinKim, Ju YoungShin, Dong OkLee, Myeong JuHong, SeungbumLee, Young-GiKim, Kwang Man
DGIST Authors
Oh, Jimin; Kim, Jumi; Lee, Yong Min; Kim, Ju Young; Shin, Dong Ok; Lee, Myeong Ju; Hong, Seungbum; Lee, Young-Gi; Kim, Kwang Man
Issue Date
2020-12
Citation
Materials Research Bulletin, 132, 111008
Type
Article
Article Type
Article
Author Keywords
Li(Ni-Co-Mn)O-2 cathode materialsVinylene carbonate1, 3-Propane sultoneElectrochemical performanceX-ray photoelectron spectroscopy
Keywords
LITHIUM-ION BATTERIESSOLID-ELECTROLYTE INTERPHASELI-IONDEPTH PROFILESTABILITYADDITIVESSELECTIONCELLS
ISSN
0025-5408
Abstract
The high-rate half-cell performance of LiNi0.3Co0.3Mn0.3O2 (NCM333), LiNi0.6Co0.2Mn0.2O2 (NCM622), and LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode materials is investigated with the base electrolyte of LiPF6/ethylene carbonate (EC):ethylmethyl carbonate (EMC) and the additives of vinylene carbonate (VC) and 1,3-propane sultone (PS). The effects of these additives on the cathode surfaces are particularly examined in terms of the reduction products of the electrolyte components and the formation of solid electrolyte interphase (SEI) on cathode surfaces. The cathode SEI appears less after formation for all NCM materials, but it accumulates with repeated charging/discharging at a high rate. Of these, the addition of VC + PS to the base electrolyte sufficiently provides stable cathode SEI with suppressed thickness under cycling at a high rate by inhibiting the further decomposition of reduction products. The synergy of VC + PS may be originated by the combination of vinyl and sulfone functional groups to provide passivation film with cross-linked protective networks on Ni-rich NCM cathode materials. Thus, superior cycle performance is achieved, especially for NCM811. © 2020 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/12707
DOI
10.1016/j.materresbull.2020.111008
Publisher
Elsevier Ltd
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Battery; Electrode; Electrolyte; Separator; Simulation
Files:
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Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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