title: Photopolymer Electrolytes for Sustainable, Upscalable, Safe, and Ambient-Temperature Sodium-Ion Secondary Batteries.
abstract: The first example of a photopolymerized electrolyte for a sodium-ion battery is proposed herein. By means of a preparation process free of solvents, catalysts, purification steps, and separation steps, it is possible to obtain a three-dimensional polymeric network capable of efficient sodium-ion transport. The thermal properties of the resulting solid electrolyte separator, characterized by means of thermogravimetric and calorimetric techniques, are excellent for use in sustainable energy systems conceived for safe large-scale grid storage. The photopolymerized electrolyte shows a wide electrochemical stability window up to 4.8 V versus Na/Na(+) along with the highest ionic conductivity (5.1 mS cm(-1) at 20 °C) obtained in the field of Na-ion polymer batteries so far and stable long-term constant-current charge/discharge cycling. Moreover, the polymeric networks are also demonstrated for the in situ fabrication of electrode/electrolyte composites with excellent interfacial properties, which are ideal for all-solid-state, safe, and easily upscalable device assembly.
authors.affiliation: GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy. federico.bella@polito.it.
authors.forename: Federico
authors.initials: F
authors.lastname: Bella
authors.affiliation: GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Colò
authors.affiliation: GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy.
authors.forename: Jijeesh R
authors.initials: JR
authors.lastname: Nair
authors.affiliation: GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Gerbaldi
mesh_terms: D001559:Benzhydryl Compounds / Q000737:chemistry*; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004573:Electrolytes / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry*; D055668:Photochemical Processes; D011092:Polyethylene Glycols / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013696:Temperature
chemical_list: D001559:Benzhydryl Compounds; D004573:Electrolytes; D008689:Methacrylates; C524499:polyethylene glycol methacrylate; D011092:Polyethylene Glycols; D012964:Sodium
keywords: batteries; electrolytes; ionic conductivity; photopolymerization; sodium