NIMTE OpenIR  > 2018专题
Influence of lithium hexafluorophosphate/ethylene carbonate/dimethyl carbonate electrolyte soaking on heat seal strength of polyamide 6/aluminum/cast-polypropylene laminates used as lithium-ion battery packaging
Guo, Zhansheng; Fan, Yang; Du, Shiyu
2018
Source PublicationJOURNAL OF PLASTIC FILM & SHEETING
Volume34Issue:1Pages:43399
AbstractThe heat-seal strength of polymer-metal-polymer laminates, widely used in the packaging industry and more recently for pouch lithium-ion batteries, is a critical factor for the integrity of flexible package structures during service. The influences of lithium hexafluorophosphate/ethylene carbonate/dimethyl carbonate (LiPF6/EC/DMC) electrolyte soaking time and storage temperature on heat-seal strength were investigated through T-peel testing using a universal testing machine. Sealed multilayer laminates' heat-seal strength and their failure modes were measured for specimens sealed at various heat-sealing temperatures and dwell times before and after exposure to room temperature and 60? soaking conditions. The soaking condition significantly influences heat-seal strength, especially for the packages heat-sealed at low temperatures and short heat-sealing times. Higher storage temperature during electrolyte-soaking accelerates the heat-seal strength decrease. Failure modes are affected by the soaking conditions and become more complicated than the packages without soaking. The optimized heat-sealing processing window is obtained under a certain soaking condition. The electrolyte hydrogen ion concentration (pH) decreases with longer soaking time and higher storage temperature, indicating that acidification may also contribute to decreased heat-seal strength. The results are important for understanding how stored lithium-ion batteries deteriorate and can help to guide battery design to maximize their shelf life.
KeywordLow-density Polyethylene Aluminum Foil Corrosion Behavior Adhesion Films Polypropylene Temperature Sorption Layers Acids
Subject AreaEnergy & Fuels
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16943
Collection2018专题
Recommended Citation
GB/T 7714
Guo, Zhansheng,Fan, Yang,Du, Shiyu. Influence of lithium hexafluorophosphate/ethylene carbonate/dimethyl carbonate electrolyte soaking on heat seal strength of polyamide 6/aluminum/cast-polypropylene laminates used as lithium-ion battery packaging[J]. JOURNAL OF PLASTIC FILM & SHEETING,2018,34(1):43399.
APA Guo, Zhansheng,Fan, Yang,&Du, Shiyu.(2018).Influence of lithium hexafluorophosphate/ethylene carbonate/dimethyl carbonate electrolyte soaking on heat seal strength of polyamide 6/aluminum/cast-polypropylene laminates used as lithium-ion battery packaging.JOURNAL OF PLASTIC FILM & SHEETING,34(1),43399.
MLA Guo, Zhansheng,et al."Influence of lithium hexafluorophosphate/ethylene carbonate/dimethyl carbonate electrolyte soaking on heat seal strength of polyamide 6/aluminum/cast-polypropylene laminates used as lithium-ion battery packaging".JOURNAL OF PLASTIC FILM & SHEETING 34.1(2018):43399.
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