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Micro- and mesoporous carbide-derived carbon-selenium cathodes for high-performance lithium selenium batteries

: Lee, Jungtae; Kim, Hyea; Oschatz, Martin; Lee, Dongchan; Wu, Feixiang; Lin, Huanting; Zdyrko, Bogdan; Il Cho, Won; Kaskel, Stefan; Yushin, Gleb N.


Advanced energy materials 5 (2015), Nr.1, Art. 1400981, 7 S.
ISSN: 1614-6840
ISSN: 1614-6832
Fraunhofer IWS ()

Nanocomposites of selenium (Se) and ordered mesoporous silicon carbide-derived carbon (OM-SiC-CDC) are prepared for the first time and studied as cathodes for lithium-selenium (Li-Se) batteries. The higher concentration of Li salt in the electrolytes greatly improves Se utilization and cell cycle stability. Se-CDC shows significantly better performance characteristics than Se-activated carbon nanocomposites with similar physical properties. Se-CDC also exhibits better rate performance and cycle stability compared to similarly produced sulfur (S)-CDC for Li/S batteries.