title: Anisotropic Lithium Ion Conductivity in Single-Ion Diblock Copolymer Electrolyte Thin Films.
abstract: Well-defined single-ion diblock copolymers consisting of a Li-ion conductive poly(styrenesulfonyllithium(trifluoromethylsulfonyl)imide) (PSLiTFSI) block associated with a glassy polystyrene (PS) block have been synthesized via reversible addition fragmentation chain transfer polymerization. Conductivity anisotropy ratio up to 1000 has been achieved from PS-b-PSLiTFSI thin films by comparing Li-ion conductivities of out-of-plane (aligned) and in-plane (antialigned) cylinder morphologies at 40 °C. Blending of PS-b-PSLiTFSI thin films with poly(ethylene oxide) homopolymer (hPEO) enables a substantial improvement of Li-ion transport within aligned cylindrical domains, since hPEO, preferentially located in PSLiTFSI domains, is an excellent lithium-solvating material. Results are also compared with unblended and blended PSLiTFSI homopolymer (hPSLiTFSI) homologues, which reveals that ionic conductivity is improved when thin films are nanostructured.
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Karim
authors.initials: K
authors.lastname: Aissou
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mumtaz
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Özlem
authors.initials: Ö
authors.lastname: Usluer
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: Pécastaings
authors.affiliation: Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG at the ESRF, F-38000, Grenoble, France.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Portale
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Fleury
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Cloutet
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux - CNRS UMR 5629 - ENSCPB, B8 Allée Geoffroy Saint Hilaire, F-33615, Pessac Cedex, France.
authors.forename: Georges
authors.initials: G
authors.lastname: Hadziioannou
mesh_terms: D016880:Anisotropy; D002850:Chromatography, Gel; D004553:Electric Conductivity; D004573:Electrolytes / Q000737:chemistry*; D007477:Ions; D008094:Lithium / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D011108:Polymers / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D012997:Solvents / Q000737:chemistry; D013696:Temperature
chemical_list: D004573:Electrolytes; D007477:Ions; D011108:Polymers; D012997:Solvents; D008094:Lithium
keywords: RAFT polymerization; thin films; block copolymers; ionic conductivity