Journal
ELECTROCHIMICA ACTA
Volume 433, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.141291
Keywords
Lithium -sulfur batteries; Carbonized cotton tissue; Multifunctional interlayer; Polysulfide barrier; Wide -temperature operation
Categories
Funding
- Natural Science Foundation of Guangdong Province
- Shenzhen Basic Research Project
- [2019A1515011573]
- [2019A1515011955]
- [20200829101039001]
- [GXWD20201231165806004]
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This study addresses the issues faced by lithium-sulfur batteries and demonstrates their excellent performance with the use of carbonized cotton tissue as an interlayer, even at different temperatures.
Lithium-sulfur batteries (LSBs) have been extensively investigated in view of their ultrahigh theoretical specific capacity, whereas their practical applications are restricted by various factors such as the shuttle effect, sluggish reaction kinetics, and extreme temperature conditions. Herein, the carbonized cotton tissue (CCT) is developed as an interlayer for LSBs due to the accessibility of the materials and the tunability of the structure. The CCT obtained at the optimized carbonization temperature can simultaneously possess favorable structural stability and exceptional conductivity. Benefiting from the CCT interlayer, LSBs with a sulfur loading of 2 mg cm-2 can deliver excellent cycling performance (966 mAh g-1@0.2 C and 756 mAh g-1@1 C) and exceptional rate performance (648 mAh g-1@2 C). Furthermore, the strategy of equipping LSBs with the CCT interlayer has been proven to be effective in a wide temperature range, and the mechanism of which has been explored in depth as well. Specifically, the batteries can deliver high capacities of 1072 mAh g-1 and 650 mAh g-1 at 50 degrees C and 0 degrees C, respectively. The present work provides significant insight into the commercial viability of LSBs.
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