Synthesis of Multiwalled Carbon Nanotube Aqueous Suspension with Surfactant Sodium Dodecylbenzene Sulfonate for Lithium/Sulfur Rechargeable Batteries

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Date

2015-12-27

Authors

Zhao, Yan
Liu, Xinyi
Zhang, Yongguang
Bakenov, Zhumabay
Yin, Fuxing

Journal Title

Journal ISSN

Volume Title

Publisher

Electrochemistry. The Electrochemical Society of Japan

Abstract

Due to the hydrophobic nature of multiwalled carbon nanotube (MWNT), sodium dodecylbenzene sulfonate (SDBS) was adopted as a surfactant to synthesize a well-dispersed, homogeneous MWNT aqueous suspension. By simple stirring mixing of the resultant MWNT suspension with nano-sulfur aqueous suspension, a novel porous sulfur/ multiwalled carbon nanotube composite (S/MWNT) was synthesized. This preparation method based on the suspension mixing possesses the advantages of simplicity and low cost. Homogeneous dispersion and integration of MWNT in the composite results in a porous, highly conductive and mechanically flexible framework with enhanced electronic conductivity and ability to absorb the polysulfides into its porous structure. The cell with this S/MWNT composite cathode demonstrates a high reversibility, resulting in a stable reversible specific discharge capacity of 708mAhg−1 after 100 cycles at 0.1 C. Furthermore, the S/MWNT composite cathode with sulfur content of 62.5wt% exhibits a good rate capability with discharge capacities of 946, 780 and 516mAhg−1 at 0.5, 1 and 1.5 C, respectively.

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Keywords

Carbon Nanotubes, Nanocomposites, Simple Stirring Mixing, Sulfur Battery, Lithium Battery, Research Subject Categories::NATURAL SCIENCES::Chemistry::Analytical chemistry::Electrochemistry

Citation

Zhao, Y., Liu, X., Zhang, Y., Bakenov, Z., & Yin, F. (2016). Synthesis of multiwalled carbon nanotube aqueous suspension with surfactant sodium dodecylbenzene sulfonate for lithium/sulfur rechargeable batteries. Electrochemistry, 84(1), 7-11. DOI: 10.5796/electrochemistry.84.7