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

Author

Listed:
  • Haibo Tan

    (Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China)

  • Shengping Wang

    (Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China)

  • Du Tao

    (Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China)

  • Zhigao Yang

    (Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China)

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.

Suggested Citation

  • Haibo Tan & Shengping Wang & Du Tao & Zhigao Yang, 2013. "Acetylene Black/Sulfur Composites Synthesized by a Solution Evaporation Concentration Crystallization Method and Their Electrochemical Properties for Li/S Batteries," Energies, MDPI, vol. 6(7), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:6:y:2013:i:7:p:3466-3480:d:27213
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    Cited by:

    1. Jakub Lach & Kamil Wróbel & Justyna Wróbel & Andrzej Czerwiński, 2021. "Applications of Carbon in Rechargeable Electrochemical Power Sources: A Review," Energies, MDPI, vol. 14(9), pages 1-29, May.

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