Eco-friendly synthesis of self-supported N-doped Sb2S3-carbon fibers with high atom utilization and zero discharge for commercial full lithium-ion batteries

Hong Yin, Kwan San Hui, Xun Zhao, Shiliang Mei, Xiaowei Lv, Kwun Nam Hui, Jun Chen

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)
2 Downloads (Pure)

Abstract

Antimony trisulfide (Sb2S3) is a prospective electrode material for lithium-ion batteries (LIBs) because of its thermal stability, low price, and high specific capacity. However, the commercialization of Sb2S3 as an anode material is greatly hindered by its poor electronic conductivity and massive volume variation during charge/discharge cycles. Moreover, growing demand in reducing greenhouse gas emission requires the material preparation process to be pollution free and highly energy efficient. Herein, we introduce, for the first time, an eco-friendly and highly efficient one-step annealing method to construct a three-dimensional (3D) flexible conductive network and buffer matrix for N-doped Sb2S3-carbon fibers (NSSCs) as a high-performance anode. It is assembled by mixing sulfur and antimony in the atomicity level with a stoichiometric ratio as the electrospinning precursor and then annealed in a sealed quartz tube to assure the high atom utilization of nitrogen and sulfur. Benefiting from the 3D structure and compositional advantages, the NSSC electrode with improved conductivity and carbon buffer matrix exhibits superior Li-storage performance. As a result, this work not only promotes the commercialization of antimony trisulfide but also points out a general eco-friendly method, which can be widely applied to synthesize a variety of flexible metal sulfides and metal nitrides with high atom utilization and zero discharge.

Original languageEnglish
Pages (from-to)6897-6906
Number of pages10
JournalACS Applied Energy Materials
Volume3
Issue number7
Early online date26 Jun 2020
DOIs
Publication statusPublished - 27 Jul 2020

Keywords

  • eco-friendly
  • energy storage
  • high atom utilization
  • volume expansion
  • zero discharge

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