The adhesion between electrode and separator is a key feature in cell assembly. Nafion™-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™ solutions and their adhesion to high-potential LNMO electrodes is investigated. The physicochemical properties of the Nafion™-coated separator and its electrochemical performance in Li/LNMO cells are discussed and compared to those obtained with polyolefin Celgard® (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™ (0.1 mg cm−2).
Malavolta L., Terella A., De Giorgio F., Arbizzani C. (2020). Improved adhesion of Nafion™-coated separator to water-processable LiNi0.5Mn1.5O4 electrodes. BATTERIES, 6(2), 1-12 [10.3390/batteries6020028].
Improved adhesion of Nafion™-coated separator to water-processable LiNi0.5Mn1.5O4 electrodes
Terella A.;De Giorgio F.;Arbizzani C.
2020
Abstract
The adhesion between electrode and separator is a key feature in cell assembly. Nafion™-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™ solutions and their adhesion to high-potential LNMO electrodes is investigated. The physicochemical properties of the Nafion™-coated separator and its electrochemical performance in Li/LNMO cells are discussed and compared to those obtained with polyolefin Celgard® (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™ (0.1 mg cm−2).| File | Dimensione | Formato | |
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2020_Malavolta_batteries-06-00028.pdf
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2020_Malavolta_batteries-06-00028_SI.pdf
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