Hybrids of La2O3 nanoplates anchored in three-dimensional carbon nanotubes microspheres as efficient sulfur-hosts for highperformance lithium/sulfur batteries

Guanghui Yuan, Huafeng Jin, Min Geng, Xinyun Liu, Zhumabay Bakenov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A S/CNTs/La2O3 composite with microsphere morphology was prepared by facile one-pot spray drying method. La2O3 nanoplates are anchored tightly in interlaced CNTs framework to form a highly efficient sulfur host. Benefiting from synergistic effects of nonpolar CNTs and polar La2O3 in both enhancing conductivity and capturing polysulfide by physical and chemical adsorptions, the novel S/CNTs/La2O3 composite exhibited superior electrochemical properties in lithium/sulfur battery. The S/CNTs/La2O3 cathode exhibited initial reversible discharge capacity of 1251 mAh g−1 and maintained 1011 mAh g−1 capacity after 100 cycles at 0.1 C. The capacity decay rate of S/CNTs/La2O3 cathode was as low as 0.067% per cycle over 300 cycles at 1.0 C, showing good long-cycling stability.

Original languageEnglish
Article number127690
JournalMaterials Letters
Volume270
DOIs
Publication statusPublished - Jul 1 2020

Keywords

  • Carbon nanotubes
  • Chemical adsorption
  • Composite materials
  • Lithium/sulfur batteries

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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