期刊
ACS NANO
卷 9, 期 6, 页码 6147-6157出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b01406
关键词
block copolymer; template; carbon; lithium-sulfur batteries; cathode
类别
资金
- German Research Foundation (DFG) SPP 1473
- German Ministry for Research and Education (BMBF) [BaMoSa-03X4637A-H]
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.
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