A Hollow Spherical Polypyrrole-Sulfur Cathode for Lithium--Sulfur Batteries.

Authors :: LI, Z. Z.
PAN, Y.
CHENG, J. J.
PAN, J. A.
LI, L.
WU, C.
GAO, P.
MA, Z. S.
Source :: Journal of Polymer Materials. Jul-Sep2015, Vol. 32 Issue 3, p237-246. 10p.
Publication Year :: 2015
Abstract: Polypyrrole with lotus leaf shape and hollow sphere structure is synthesized as an active material and absorbing agent of sulfur for lithium-ion battery. The charge/discharge characteristics of sulfur-polypyrrole composite cathode have been investigated at different current rates. Due to the effective entrapment of polysulfide intermediates by the special structures of polypyrrole, the composites exhibit a high cycling stability with the coulombic efficiency of 92.02%, 92.31% and 94.31% after 100 cycles at the current rates of 0.2 C, 0.5 C and 1 C, respectively. [ABSTRACT FROM AUTHOR]