title: Single-Ion Block Copoly(ionic liquid)s as Electrolytes for All-Solid State Lithium Batteries.
abstract: Polymer electrolytes have been proposed as replacement for conventional liquid electrolytes in lithium-ion batteries (LIBs) due to their intrinsic enhanced safety. Nevertheless, the power delivery of these materials is limited by the concentration gradient of the lithium salt. Single-ion conducting polyelectrolytes represent the ideal solution since their nature prevents polarization phenomena. Herein, the preparation of a new family of single-ion conducting block copolymer polyelectrolytes via reversible addition-fragmentation chain transfer polymerization technique is reported. These copolymers comprise poly(lithium 1-[3-(methacryloyloxy)propylsulfonyl]-1-(trifluoromethylsulfonyl)imide) and poly(ethylene glycol) methyl ether methacrylate blocks. The obtained polyelectrolytes show low Tg values in the range of -61 to 0.6 °C, comparatively high ionic conductivity (up to 2.3 × 10(-6) and 1.2 × 10(-5) S cm(-1) at 25 and 55 °C, respectively), wide electrochemical stability (up to 4.5 V versus Li(+)/Li), and a lithium-ion transference number close to unity (0.83). Owing to the combination of all mentioned properties, the prepared polymer materials were used as solid polyelectrolytes and as binders in the elaboration of lithium-metal battery prototypes with high charge/discharge efficiency and excellent specific capacity (up to 130 mAh g(-1)) at C/15 rate.
authors.affiliation: GAME Lab, 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: A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) , Vavilov str. 28, 119991, GSP-1 Moscow, Russia.
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shaplov
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU , Joxe Mari Korta Center, Avda. Tolosa 72, 20018 Donostia-San Sebastian, Spain.
authors.forename: Maitane
authors.initials: M
authors.lastname: Salsamendi
authors.affiliation: GAME Lab, 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: A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) , Vavilov str. 28, 119991, GSP-1 Moscow, Russia.
authors.forename: Yakov S
authors.initials: YS
authors.lastname: Vygodskii
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU , Joxe Mari Korta Center, Avda. Tolosa 72, 20018 Donostia-San Sebastian, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Mecerreyes
authors.affiliation: GAME Lab, 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
keywords: block copolymer; lithium battery; poly(ionic liquid)s; polymer electrolyte; single-ion conductor; solid state