Journalartikel

Jahr der Veröffentlichung: 2016

Seiten: 10274-10282

Zeitschrift: ACS Applied Materials & Interfaces

Bandnummer: 8

Heftnummer: 16

ISSN: 1944-8244

eISSN: 1944-8252

DOI Link: https://doi.org/10.1021/acsami.5b12361

Verlag: American Chemical Society

Abstract: 
Nitrogen-rich carbon with both a turbostratic microstructure and meso/macroporosity was prepared by hard templating through pyrolysis of a tricyanomethanide-based ionic liquid in the voids of a silica monolith template. This multifunctional carbon not only is a promising anode candidate for long-life lithium-ion batteries but also shows favorable properties as anode and cathode host material owing to a high nitrogen content (>8% after carbonization at 900 degrees C). To demonstrate the latter, the hierarchical carbon was melt-infiltrated with sulfur as well as coated by atomic layer deposition (ALD) of anatase TiO2, both of which led to high-quality nanocomposites. TiO2 ALD increased the specific capacity of the carbon while maintaining high Coulombic efficiency and cycle life: the composite exhibited stable performance in lithium half-cells, with excellent recovery of low rate capacities after thousands of cycles at SC. Lithium-sulfur batteries using the sulfur/carbon composite also showed good cyclability, with reversible capacities of similar to 700 mA.h.g(-1) at C/5 and without obvious decay over several hundred cycles. The present results demonstrate that nitrogen-rich carbon with an interconnected multimodal pore structure is very versatile and can be used as both active and inactive electrode material in high-performance lithium-based batteries.

Harvard-Zitierstil: Reitz, C., Breitung, B., Schneider, A., Wang, D., von der Lehr, M., Leichtweiss, T., et al. (2016) Hierarchical Carbon with High Nitrogen Doping Level: A Versatile Anode and Cathode Host Material for Long-Life Lithium-Ion and Lithium-Sulfur Batteries, ACS Applied Materials & Interfaces, 8(16), pp. 10274-10282. https://doi.org/10.1021/acsami.5b12361

APA-Zitierstil: Reitz, C., Breitung, B., Schneider, A., Wang, D., von der Lehr, M., Leichtweiss, T., Janek, J., Hahn, H., & Brezesinski, T. (2016). Hierarchical Carbon with High Nitrogen Doping Level: A Versatile Anode and Cathode Host Material for Long-Life Lithium-Ion and Lithium-Sulfur Batteries. ACS Applied Materials & Interfaces. 8(16), 10274-10282. https://doi.org/10.1021/acsami.5b12361