<p>This study employed glucose as a carbon source, graphene oxide (GO) as a template, and surfactants as binding agents to prepare black-brown columnar GO/GC composites through hydrothermal carbonization-induced self-assembly. The precursor was then chemically activated with ZnCl₂ to obtain micro–mesoporous GO/GMMC carbon materials. Sulfur was subsequently incorporated via a melt-diffusion process, yielding S@GO/GMMC composites. When used as a conductive scaffold in lithium–sulfur batteries, the material exhibited high electrical conductivity, effectively confined and adsorbed polysulfides, and suppressed their shuttle effect. As a result, the S@GO/GMMC cathode delivered outstanding electrochemical performance, achieving an initial discharge capacity of 1260 mAh·g<sup>− 1</sup> at 1&#xa0;C and retaining 713 mAh·g<sup>− 1</sup> after 500 cycles.</p> Graphical Abstract <p></p>

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Graphene oxide/glucose-derived carbon composites as multiple effects hosts for lithium-sulfur batteries

  • Xingqin Xie,
  • Guixiang He,
  • Xuexian Jiang,
  • Rui Du,
  • Lusen Wang,
  • Wenquan Li,
  • Xuze Li

摘要

This study employed glucose as a carbon source, graphene oxide (GO) as a template, and surfactants as binding agents to prepare black-brown columnar GO/GC composites through hydrothermal carbonization-induced self-assembly. The precursor was then chemically activated with ZnCl₂ to obtain micro–mesoporous GO/GMMC carbon materials. Sulfur was subsequently incorporated via a melt-diffusion process, yielding S@GO/GMMC composites. When used as a conductive scaffold in lithium–sulfur batteries, the material exhibited high electrical conductivity, effectively confined and adsorbed polysulfides, and suppressed their shuttle effect. As a result, the S@GO/GMMC cathode delivered outstanding electrochemical performance, achieving an initial discharge capacity of 1260 mAh·g− 1 at 1 C and retaining 713 mAh·g− 1 after 500 cycles.

Graphical Abstract