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The composite of polythiophene/sulfur/Ketjen black with the layered spherical structure was designed and prepared to reduce the loss of active material and weaken the “shuttle effect” of polysulfides in Li-S battery. Ketjen black particle, which serves as conductive carbon core, was firstly coated by sulfur layer, and then sulfur/carbon particle was wrapped by polythiophene layer through in situ polymerization...
A three-dimensional nitrogen-doped graphene/sulfur composite (NGS3) was synthesized by a simple hydrothermal method using urea as the nitrogen source and subsequent thermal treatment. The structure and electrochemical performance of the prepared nitrogen-doped graphene/sulfur composite (NGS3) were confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope...
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