Sulfur-infiltrated micro- and mesoporous silicon carbide-derived carbon cathode for high-performance lithium sulfur batteries.

Lee, Jung Tae; Zhao, Youyang; Thieme, Sören; Kim, Hyea; Oschatz, Martin; Borchardt, Lars; Magasinski, Alexandre; Cho, Won-Il et al. · Adv Mater · 2013

basic_science · Level V

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Abstract

Novel nanostructured sulfur (S)-carbide derived carbon (CDC) composites with ordered mesopores and high S content are successfully prepared for lithium sulfur batteries. The tunable pore-size distribution and high pore volume of CDC allow for an excellent electrochemical performance of the composites at high current densities. A higher electrolyte molarity is found to enhance the capacity utilization dramatically and reduce S dissolution in S-CDC composite cathodes during cycling.