Micro- and mesoporous carbide-derived carbon prepared by a sacrificial template method in high performance lithium sulfur battery cathodes
作者： M. Oschatz , J. T. Lee , H. Kim , W. Nickel , L. Borchardt
DOI: 10.1039/C4TA03327B
关键词:
摘要: Polymer-based carbide-derived carbons (CDCs) with combined micro- and mesopores are prepared by an advantageous sacrificial templating approach using poly(methylmethacrylate) (PMMA) spheres as the pore forming material. Resulting CDCs reveal uniform size shape a specific surface area of 2434 m2 g−1 total volume high 2.64 cm3 g−1. The bimodal CDC material is highly attractive host structure for active in lithium–sulfur (Li–S) battery cathodes. It facilitates utilization molarity electrolytes therefore cells exhibit good rate performance stability. cathodes 5 M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) electrolyte show highest discharge capacities (up to 1404 mA h gs−1) capacity retention (72% after 50 cycles at C/5). unique network carbon enables distribution sulfur through conductive media same time it rapid access
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