Influence of temperature on the aging behavior of 18650-type lithium ion cells: A comprehensive approach combining electrochemical characterization and post-mortem analysis

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• 作者：Alex Friesen^a ; ^b ; Xaver Mö ; nnighoff^a ; ^b ; Markus Bö ; rner^a ; ^b ; Jan Haetge^a ; Falko M. Schappacher^a ; ^{falko.schappacher@uni-muenster.de} ; Martin Winter^a ; ^b ; ^c ; ^{martin.winter@uni-muenster.de} ; ^{m.winter@fz-juelich.de}
• 关键词：18650-type ; Lithium ion cells ; Aging mechanisms ; Electrolyte aging ; Graphite exfoliation ; Temperature dependency
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：342
• 期：Complete
• 页码：88-97
• 全文大小：3590 K
• 卷排序：342

文摘

FEC influence on aging and degradation of PC/EC/DMC based electrolyte. Complex interaction of electrolyte and electrode in dependency of the temperature. Exfoliation of graphite as a result of solvent co-intercalation at 20 °C. Exfoliation results into massive electrolyte decomposition and a thick SEI layer. Stable and effective SEI at anode enables good electrochemical performance at 45 °C.