Journalartikel

Autorenliste: Kruener, Benjamin; Doerr, Tobias S.; Shim, Hwirim; Sann, Joachim; Janek, Juergen; Presser, Volker

Jahr der Veröffentlichung: 2018

Seiten: 83-94

Zeitschrift: Batteries & Supercaps

Bandnummer: 1

Heftnummer: 2

eISSN: 2566-6223

DOI Link: https://doi.org/10.1002/batt.201800013

Verlag: Wiley

Abstract: 
Ordered mesoporous carbon materials, prepared from co-assembly of a block copolymer and a commercial resol, were investigated as a sulfur host for LiS-battery cathodes. We studied two activation methods for such carbons, namely annealing in ammonia (NH3) and carbon dioxide (CO2). We found that both activation environments drastically increased the specific surface area and establish a micro- and mesoporous pore structure. Treatment with NH3 also introduced nitrogen groups, which increased the initial specific capacity. The non-activated carbon yielded carbon/sulfur cathodes with an initial capacity of similar to 900 mAh/g(sulfur) (150 mAh/g(sulfur) after 100 cycles). The initial capacity was increased to 1300 mAh/g(sulfur) for the NH3 activated sample but with poor cycling stability. Enhanced performance stability was found for the CO2 treated sample with an initial capacity of 1100 mAh/g(sulfur) (700 mAh/g(sulfur) after 100 cycles).

Harvard-Zitierstil: Kruener, B., Doerr, T., Shim, H., Sann, J., Janek, J. and Presser, V. (2018) Gyroidal Porous Carbon Activated with NH3 or CO2 as Lithium-Sulfur Battery Cathodes, Batteries & Supercaps, 1(2), pp. 83-94. https://doi.org/10.1002/batt.201800013

APA-Zitierstil: Kruener, B., Doerr, T., Shim, H., Sann, J., Janek, J., & Presser, V. (2018). Gyroidal Porous Carbon Activated with NH3 or CO2 as Lithium-Sulfur Battery Cathodes. Batteries & Supercaps. 1(2), 83-94. https://doi.org/10.1002/batt.201800013