Enhanced Lithium Battery with Polyethylene Oxide‐Based Electrolyte Containing Silane–Al2O3 Ceramic Filler. Issue 8 (11th June 2013)

• Record Type: Journal Article
• Authors: Zewde, Berhanu W.; Admassie, Shimelis; Zimmermann, Jutta; Isfort, Christian Schulze; Scrosati, Bruno; Hassoun, Jusef
• Is Part Of: ChemSusChem. Volume 6:Issue 8(2013:Aug.)
• Page Start: 1400
• Page End: 1405
• Publication Date: 2013-06-11
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201300296
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A solid polymer electrolyte prepared by using a solvent‐free, scalable technique is reported. The membrane is formed by low‐energy ball milling followed by hot‐pressing of dry powdered polyethylene oxide polymer, LiCF₃SO₃ salt, and silane‐treated Al₂O₃ (Al₂O₃‐ST) ceramic filler. The effects of the ceramic fillers on the properties of the ionically conducting solid electrolyte membrane are characterized by using electrochemical impedance spectroscopy, XRD, differential scanning calorimeter, SEM, and galvanostatic cycling in lithium cells with a LiFePO₄ cathode. We demonstrate that the membrane containing Al₂O₃‐ST ceramic filler performs well in terms of ionic conductivity, thermal properties, and lithium transference number. Furthermore, we show that the lithium cells, which use the new electrolyte together with the LiFePO₄ electrode, operate within 65 and 90 °C with high efficiency and long cycle life. Hence, the Al₂O₃‐ST ceramic can be efficiently used as a ceramic filler to enhance the performance of solid polymer electrolytes in lithium batteries.</p> </abstract>