TY - JOUR
T1 - Preparation of novel network nanostructured sulfur composite cathode with enhanced stable cycle performance
AU - Zhang, Yongguang
AU - Zhao, Yan
AU - Bakenov, Zhumabay
AU - Konarov, Aishuak
AU - Chen, P.
N1 - Funding Information:
This research was financially supported by Positec , Natural Sciences and Engineering Research Council of Canada (NSERC) , Canadian Foundation for Innovation (CFI) and the Canada Research Chairs (CRC) . YZ thanks the China Scholarship Council for Study Abroad Scholarship. ZB acknowledges a research grant from the Ministry of Education and Science of Kazakhstan #1889 and a Subproject supported by the Technology Commercialization Project by the World Bank and the Government of Kazakhstan.
PY - 2014/12/15
Y1 - 2014/12/15
N2 - In situ polymerization of acrylonitrile with nano-sulfur particles has been developed as a synthetic route to prepare sulfur/polyacrylonitrile (S/ pPAN) composite as a cathode material for lithium/sulfur battery. Transmission electronic microscopy revealed the formation of a highly developed network structure consisting of PAN and sulfur homogeneous mixing at nanosized level, providing the "buffering" space to accommodate the volume change of sulfur upon cycling and retaining the structural integrity preventing the material agglomeration and degradation. Benefiting from this unique structure, the S/pPAN composite cathode demonstrated enhanced reversibility, resulting in a discharge capacity of 1177 mAh g-1 at the second cycle and retained about 100% of this value over 100 cycles at 0.5C. Furthermore, the S/pPAN composite cathode delivered a discharge capacity of 981 mAh g-1 at the 100th cycle at 1C.
AB - In situ polymerization of acrylonitrile with nano-sulfur particles has been developed as a synthetic route to prepare sulfur/polyacrylonitrile (S/ pPAN) composite as a cathode material for lithium/sulfur battery. Transmission electronic microscopy revealed the formation of a highly developed network structure consisting of PAN and sulfur homogeneous mixing at nanosized level, providing the "buffering" space to accommodate the volume change of sulfur upon cycling and retaining the structural integrity preventing the material agglomeration and degradation. Benefiting from this unique structure, the S/pPAN composite cathode demonstrated enhanced reversibility, resulting in a discharge capacity of 1177 mAh g-1 at the second cycle and retained about 100% of this value over 100 cycles at 0.5C. Furthermore, the S/pPAN composite cathode delivered a discharge capacity of 981 mAh g-1 at the 100th cycle at 1C.
KW - Cathode
KW - Lithium/sulfur battery
KW - Network structure
KW - Sulfur/polyacrylonitrile composite
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U2 - 10.1016/j.jpowsour.2014.07.096
DO - 10.1016/j.jpowsour.2014.07.096
M3 - Article
AN - SCOPUS:84905822485
SN - 0378-7753
VL - 270
SP - 326
EP - 331
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -
