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Shaddock wadding created activated carbon as high sulfur content encapsulator for lithium-sulfur batteries

Authors :
Ying Huang
Haiwei Wu
Zhang Xin
Xuefang Chen
Weichao Zhang
Source :
Journal of Alloys and Compounds. 724:575-580
Publication Year :
2017
Publisher :
Elsevier BV, 2017.

Abstract

In this work, a microporous and high surface area carbon material with excellent electron conductivity is synthesized through carbonizing and activation processes using waste shaddock wadding. Because of the unique multi-hole, thin sheets cluster and irregular wrinkled surface coexisting structure, the shaddock wadding carbon-sulfur (SWD-S) composite can be used as a kind of cathode material for rechargeable lithium-sulfur batteries by loading element sulfur into the shaddock wadding activated carbon via simple heat treatments. Because of the high specific surface area of SWD (1637.3 m 2 g −1 ), the SWD-S composite has a sulfur content about 73.7 wt%, and delivers a high initial discharge capacity of 1050 mAh g −1 at a rate of 0.2C. Moreover, SWD-S composite exhibits a good rate capacity and excellent cycle ability. Over 200 cycles it achieves with a high columbic efficiency around 95%. After 200 cycles at 0.2C, it still remains a capacity of 599 mAh g −1 .

Details

ISSN :
09258388
Volume :
724
Database :
OpenAIRE
Journal :
Journal of Alloys and Compounds
Accession number :
edsair.doi...........ec3da8bac6c8906b5c5d6a265f90de9d