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    Improved Adhesion of Nafion (TM)-Coated Separator to Water-Processable LiNi0.5Mn1.5O4 Electrodes

    Year: 2020

    Journal: Batteries-Basel, Volume 6, JUN

    Authors: Malavolta, Laura; Terella, Antonio; De Giorgio, Francesca; Arbizzani, Catia

    Organizations: MSE-ENEA Electrical System Research "Energy storage for electric system" Project [PAR 2019-2021]

    Keywords: modified separators; Nafion (TM) layer; aqueous binder; LiNi0.5Mn1.5O4

    The adhesion between electrode and separator is a key feature in cell assembly. Nafion (TM)-coated separators for water-processed LiNi0.5Mn1.5O4(LNMO) electrodes are here proposed as an alternative to the polyolefin separators. Specifically, polyolefin separators are modified with Nafion (TM) solutions and their adhesion to high-potential LNMO electrodes is investigated. The physicochemical properties of the Nafion (TM)-coated separator and its electrochemical performance in Li/LNMO cells are discussed and compared to those obtained with polyolefin Celgard (R)(Charlotte, NC, USA) PP2075 separator. Improved adhesion and cycling stability, which could be further enhanced by a mild lamination process, were demonstrated with a thin layer of Nafion (TM) (0.1 mg cm(-2)).
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