title: Super Soft All-Ethylene Oxide Polymer Electrolyte for Safe All-Solid Lithium Batteries.
abstract: Here we demonstrate that by regulating the mobility of classic -EO- based backbones, an innovative polymer electrolyte system can be architectured. This polymer electrolyte allows the construction of all solid lithium-based polymer cells having outstanding cycling behaviour in terms of rate capability and stability over a wide range of operating temperatures. Polymer electrolytes are obtained by UV-induced (co)polymerization, which promotes an effective interlinking between the polyethylene oxide (PEO) chains plasticized by tetraglyme at various lithium salt concentrations. The polymer networks exhibit sterling mechanical robustness, high flexibility, homogeneous and highly amorphous characteristics. Ambient temperature ionic conductivity values exceeding 0.1 mS cm(-1) are obtained, along with a wide electrochemical stability window (>5 V vs. Li/Li(+)), excellent lithium ion transference number (>0.6) as well as interfacial stability. Moreover, the efficacious resistance to lithium dendrite nucleation and growth postulates the implementation of these polymer electrolytes in next generation of all-solid Li-metal batteries working at ambient conditions.
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: Luca
authors.initials: L
authors.lastname: Porcarelli
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
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: 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: Jijeesh Ravi
authors.initials: JR
authors.lastname: Nair