title: Nanoporous Cathodes for High-Energy Li-S Batteries from Gyroid Block Copolymer Templates.
abstract: This study reports on a facile approach to the fabrication of nanoporous carbon cathodes for lithium sulfur batteries using gyroid carbon replicas based on use of polystyrene-poly-4-vinylpyridine (PS-P4VP) block copolymers as sacrificial templates. The free-standing gyroid carbon network with a highly ordered and interconnected porous structure has been fabricated by impregnating the carbon precursor solution into the gyroid block copolymer nanotemplates and subsequently carbonizing them. A wide range of analytical tools have been employed to characterize fabricated porous carbon material. Prepared nanostructures are envisioned to have a great potential in myriad areas such as energy storage/conversion devices owing to their fascinating morphology exhibiting high surface area and uniform porosity with interconnected three-dimensional networks. The resulting carbon nanoporous structures infused with elemental sulfur have been found to work as a promising electrode for lithium sulfur batteries demonstrating a high cycling stability over more than 200 cycles.
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Soumyadip
authors.initials: S
authors.lastname: Choudhury
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Mukesh
authors.initials: M
authors.lastname: Agrawal
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Petr
authors.initials: P
authors.lastname: Formanek
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Dieter
authors.initials: D
authors.lastname: Jehnichen
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Dieter
authors.initials: D
authors.lastname: Fischer
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Beate
authors.initials: B
authors.lastname: Krause
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Victoria
authors.initials: V
authors.lastname: Albrecht
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.|§Physical Chemistry of Polymer Materials, Technische Universität Dresden, D-01062 Dresden, Germany.
authors.forename: Manfred
authors.initials: M
authors.lastname: Stamm
authors.affiliation: †Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany.
authors.forename: Leonid
authors.initials: L
authors.lastname: Ionov
keywords: block copolymer; carbon; cathode; lithium−sulfur batteries; template