Nano-ZnO-PEO (poly(ethylene oxide)) hybrid polymers have been synthesized and successfully investigated as a solid-state electrolyte for application in lithium-polymer batteries. Three compositions containing 2, 5, and 7 wt % of ZnO nanoparticles covalently grafted to PEO chains have been prepared. The chemical structure of these materials has been characterized via Fourier-transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential scanning calorimetry, and X-ray photoelectron spectroscopy. The surface morphology and elemental distribution of the materials have been investigated by means of atomic force microscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results reveal a uniform distribution of the ZnO nanoparticles within the smooth electrolyte films, prepared by dissolving in these materials lithium bis(trifluoromethanesulfonyl)imide as the Li-conducting salt and N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid as plasticizer. Such volatile solvent-free polymer electrolytes possess the high thermal stability and suitable electrochemical stability required for solid-state lithium-metal batteries. In fact, the material with 7 wt % ZnO exhibits a rather good lithium plating/stripping performance at 40 degrees C and the highest ionic conductivity (4.2 X 10(-4) S cm(-1)) at room temperature, benefiting from the well-dispersed inorganic nanoparticles due to the polymer grafting and hybrid polymer approach.

Understanding the role of nanoparticles in PEO-based hybrid polymer electrolytes for solid-state Lithium-polymer batteries / Nematdoust, Samira; Najjar, Reza; Bresser, Dominic; Passerini, Stefano. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 124:51(2020), pp. 27907-27915. [10.1021/acs.jpcc.0c08749]

Understanding the role of nanoparticles in PEO-based hybrid polymer electrolytes for solid-state Lithium-polymer batteries

Stefano Passerini
2020

Abstract

Nano-ZnO-PEO (poly(ethylene oxide)) hybrid polymers have been synthesized and successfully investigated as a solid-state electrolyte for application in lithium-polymer batteries. Three compositions containing 2, 5, and 7 wt % of ZnO nanoparticles covalently grafted to PEO chains have been prepared. The chemical structure of these materials has been characterized via Fourier-transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential scanning calorimetry, and X-ray photoelectron spectroscopy. The surface morphology and elemental distribution of the materials have been investigated by means of atomic force microscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results reveal a uniform distribution of the ZnO nanoparticles within the smooth electrolyte films, prepared by dissolving in these materials lithium bis(trifluoromethanesulfonyl)imide as the Li-conducting salt and N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid as plasticizer. Such volatile solvent-free polymer electrolytes possess the high thermal stability and suitable electrochemical stability required for solid-state lithium-metal batteries. In fact, the material with 7 wt % ZnO exhibits a rather good lithium plating/stripping performance at 40 degrees C and the highest ionic conductivity (4.2 X 10(-4) S cm(-1)) at room temperature, benefiting from the well-dispersed inorganic nanoparticles due to the polymer grafting and hybrid polymer approach.
2020
electrolytes; materials; metal oxide nanoparticles; oxides; polymers
01 Pubblicazione su rivista::01a Articolo in rivista
Understanding the role of nanoparticles in PEO-based hybrid polymer electrolytes for solid-state Lithium-polymer batteries / Nematdoust, Samira; Najjar, Reza; Bresser, Dominic; Passerini, Stefano. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 124:51(2020), pp. 27907-27915. [10.1021/acs.jpcc.0c08749]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1651549
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