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• 关键词：Short side chain ionomer ; Hyflon Ion ; Lithium polymer electrolyte ; Conductivity ; Water content
• 刊名：Sensors and Actuators A: Physical
• 出版年：2008
• 出版时间：28 May 2008
• 年：2008
• 卷：144
• 期：1
• 页码：CO2
• 全文大小：37 K

文摘

In view of possible applications as single-ion electrolyte for lithium batteries, some aspects of the lithium form of Hyflon Ion ionomer, a sulfonic short side chain (SSC) electrolyte, have been investigated. The synthesis of the ionomer and the successive membrane preparation is reported. An appropriate methodology for the direct salification of the ionomeric membrane from the SO₂F form to lithium salt, using lithium hydroxide in absence of organic solvent has been found. Utilizing these SSC lithium ionomer membranes and though a particular methodology for the dehydration of the lithium ion membrane in non-aqueous media, it has been possible to achieve an ionic conductivity of 10⁻³ S cm⁻¹ at room temperature [W. Navarrini, S. Panero, B. Scrosati, A. Sanguineti, European Patent 1,403,958 A1 (2003)]. Surprisingly it was observed that the membrane ionic conductivity depends on the dehydration methodologies adopted.