Experimental Investigation of the Influence of the Electrolyte Composition on the Ageing Behavior of Separators in Lithium-Ion Cells. (7th August 2015)

• Record Type: Journal Article
• Authors: Kraemer, Yvonne; Hintennach, Andreas; Meiler, Markus
• Is Part Of: ECS transactions. Volume 66:Number 9(2015)
• Page Start: 159
• Page End: 167
• Publication Date: 2015-08-07
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06609.0159ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : The most widely used liquid non-aqueous electrolytes for lithium-ion cells used in electronic consumer and automotive applications consist of lithium hexafluorophosphate (LiPF6 ) as conductive salt dissolved in a mixture of carbonate esters (cyclic and linear) with the structural unit RO-CO–OR. The separator is a second safety related component in lithium-ion cells, which can be classified into three groups according to the structure: microporous polymer membranes (MPM), non-woven fabric mats (FM) and inorganic composite membranes (ICM). Both non-active components can take part at calendar and cyclic ageing in lithium-ion cells. In this work we report investigations of long-term decomposition reaction mechanisms of a binary electrolyte system. Furthermore, the mutual interaction ageing behavior of both components are investigated.