Journal
JOURNAL OF POWER SOURCES
Volume 259, Issue -, Pages 183-187Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.02.078
Keywords
Polyacrylonitrile; Lithium sulfur battery; Cathode; Nanocomposite
Funding
- Positec
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canadian Foundation for Innovation (CFI)
- Canada Research Chairs Program (CRC)
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The preparation of a sulfur/dehydrogenated polyacrylonitrile (S/DPAN) composite by manual mixing followed by heat treatment at 300 degrees C in argon atmosphere is described. Electron microscopy analysis reveals very different morphology before and after heat treatment of the composites. Manually mixed S/DPAN cathode composites containing 48 wt% of sulfur exhibit a stable discharge capacity of 1050 mAh g(-1) after 80 galvanostatic discharge-charge cycles at 0.2C, and good C-rate performance with up to 770 mAh g(-1) at 1C. Results indicate that the long chains of polyacrylonitrile are retained during synthesis and may contribute to the enhanced electronic conductivity of the composite. (C) 2014 Elsevier B.V. All rights reserved.
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