Energies 2013, 6(7), 3466-3480; doi:10.3390/en6073466
Article

Acetylene Black/Sulfur Composites Synthesized by a Solution Evaporation Concentration Crystallization Method and Their Electrochemical Properties for Li/S Batteries

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Received: 8 May 2013; in revised form: 20 June 2013 / Accepted: 9 July 2013 / Published: 15 July 2013
(This article belongs to the Special Issue Li-ion Batteries and Energy Storage Devices)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A novel technique to prepare carbon/sulfur composites as cathode materials for Li/S batteries is proposed, which we call the ‘solution evaporation concentration crystallization’ method. Three composites with different S loadings were prepared, subject to two different solvent evaporation rates from acetylene black (AB)/sulfur in carbon disulfide solutions. X-ray diffraction, environmental scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller measurements all show that the porous AB structure is well-filled with S. Composites prepared at a lower solvent evaporation rate with 50 wt % S content, had good electrochemical properties, with 1609.67 mAh g−1 after 100 cycles. Composites with better dispersibility at a low solvent evaporation rate can effectively prevent polysulfide from dissolving in the electrolyte, and serve to stabilize the structure of the S cathode during the charge-discharge process.
Keywords: sulfur/carbon composites; solution evaporation concentration crystallization method; lithium sulfur batteries
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MDPI and ACS Style

Tan, H.; Wang, S.; Tao, D.; Yang, Z. Acetylene Black/Sulfur Composites Synthesized by a Solution Evaporation Concentration Crystallization Method and Their Electrochemical Properties for Li/S Batteries. Energies 2013, 6, 3466-3480.

AMA Style

Tan H, Wang S, Tao D, Yang Z. Acetylene Black/Sulfur Composites Synthesized by a Solution Evaporation Concentration Crystallization Method and Their Electrochemical Properties for Li/S Batteries. Energies. 2013; 6(7):3466-3480.

Chicago/Turabian Style

Tan, Haibo; Wang, Shengping; Tao, Du; Yang, Zhigao. 2013. "Acetylene Black/Sulfur Composites Synthesized by a Solution Evaporation Concentration Crystallization Method and Their Electrochemical Properties for Li/S Batteries." Energies 6, no. 7: 3466-3480.

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