کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5461473 | 1516202 | 2017 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: MoS2-decorated coaxial nanocable carbon aerogel composites as cathode materials for high performance lithium-sulfur batteries MoS2-decorated coaxial nanocable carbon aerogel composites as cathode materials for high performance lithium-sulfur batteries](/preview/png/5461473.png)
- CNCA was prepared by phenol aldehyde reaction on MWCNT.
- MoS2/CNCA shows large surface area and small pore size.
- MoS2 evenly embedded in CNCA can anchor polysulfides.
- MoS2/CNCA/S exhibits improved electrochemical performances.
MoS2-decorated coaxial nanocable carbon aerogel (MoS2/CNCA) has been successfully prepared by phenol aldehyde reaction on the substrate of multi-walled carbon nanotube with catalysis of ammonium molybdate followed pyroprocessing with sulfur. The as-prepared samples were characterized by transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, X-ray powder diffraction, and X-ray photoelectron spectroscopy. The MoS2-decorated carbon aerogel (CA) with carbon nanotube as fine wire presents narrow distribution of pore size, interconnected structure and high conductance. The MoS2/CNCA/S composites exhibit improved electrochemical performances as cathode of lithium-sulfur batteries. Especially, the MoS2-8/CNCA/S composite delivers a discharge capacity of 1343 mAh gâ1 at 0.2 C with the capacity retention of 81% after 200 cycles. Even at 5 C, the electrode presents high discharge capacity of 723 mAh gâ1. These improved results can be attributed to the contribution of entangled network as electronic conductive channel, large surface area, small pore size and special anchoring action of molybdenum disulfide.
Journal: Journal of Alloys and Compounds - Volume 692, 25 January 2017, Pages 40-48