Abstract:
An efficient, industry-accepted spray drying method was used to synthesize microspherical
sulfur/graphene oxide (S/GO) composites as cathode materials within lithium sulfur
batteries. The as-designed wrapping of the sulfur-nanoparticles, with wrinkled GO composites,
was characterized by scanning electron microscopy (SEM) and transmission electron microscopy
(TEM). The unique morphological design of this material enabled superior discharge capacity and
cycling performance, demonstrating a high initial discharge capacity of 1400 mAh g1 at 0.1 C.
The discharge capacity remained at 828 mAh g1 after 150 cycles. The superior electrochemical
performance indicates that the S/GO composite improves electrical conductivity and alleviates the
shuttle effect. This study represents the first time such a facile spray drying method has been adopted
for lithium sulfur batteries and used in the fabrication of S/GO composites