Authors Choudhury, S. ; Agrawal, M. ; Formanek, P. ; Jehnichen, D. ; Fischer, D. ; Krause, B. ; Albrecht, V. ; Stamm, M. ; Ionov, L.
Title Nanoporous cathodes for high-energy Li-S batteris from gyroid block copolymer templates
Date 04.06.2015
Number 46781
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.
Publisher ACS Nano
Citation ACS Nano 9 (2015) 6147-6157
Tags block copolymer template carbon lithium-sulfur batteries cathode

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