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<p>Metal sulfides with high theoretical capacities have gradually gained attention as preferable anode materials for sodium-ion batteries. Tetragonal Cu<sub>3</sub>SbS<sub>4</sub>/rGO was synthesized by solvent thermal and ball milling and evaluated for the first time as lithium/sodium/potassium-ion battery anode material via constant current charge/discharge, rate charge/discharge, cyclic voltammetry, and electrochemical impedance spectroscopy. Ex-situ XRD revealed the lithium/sodium/potassium-ion mechanisms of the Cu<sub>3</sub>SbS<sub>4</sub> anode, indicating that its capacity was mainly provided by the alloying reaction and conversion reaction. Due to high electrical conductivity of rGO, the Cu<sub>3</sub>SbS<sub>4</sub>/rGO electrode exhibited lower charge transfer resistance and more stable structure during charge/discharge process, reversible capacity and cycle performance of the Cu<sub>3</sub>SbS<sub>4</sub>/rGO were significantly improved compared with pristine Cu<sub>3</sub>SbS<sub>4</sub>. Therefore, the Cu<sub>3</sub>SbS<sub>4</sub>/rGO showed a discharge capacity of 283.9&#xa0;mAh&#xa0;g<sup>−1</sup> after 500 cycles at 1&#xa0;A&#xa0;g<sup>−1</sup> in lithium-ion batteries, a discharge capacity of 243.4&#xa0;mAh&#xa0;g<sup>−1</sup> after 300 cycles at 1&#xa0;A&#xa0;g<sup>−1</sup> in potassium-ion batteries and a discharge capacity of 193.0&#xa0;mAh&#xa0;g<sup>−1</sup> at 9&#xa0;A&#xa0;g<sup>−1</sup> in sodium-ion batteries. The results showed that Sb-based bimetallic sulfide have a certain development prospect as the anodes for lithium/sodium/potassium-ion batteries.</p> Graphical abstract <p></p>

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Promoting highly reversible lithium/sodium/potassium-ion storage of Cu3SbS4 via reduced graphene oxide wrapping

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Changsheng Xu,
  • Dandan She,
  • Lihao Liu,
  • Jie Wang,
  • Kewei Wu,
  • Zihong Zheng,
  • Jingcheng Wang,
  • Xuebu Hu

摘要

Metal sulfides with high theoretical capacities have gradually gained attention as preferable anode materials for sodium-ion batteries. Tetragonal Cu3SbS4/rGO was synthesized by solvent thermal and ball milling and evaluated for the first time as lithium/sodium/potassium-ion battery anode material via constant current charge/discharge, rate charge/discharge, cyclic voltammetry, and electrochemical impedance spectroscopy. Ex-situ XRD revealed the lithium/sodium/potassium-ion mechanisms of the Cu3SbS4 anode, indicating that its capacity was mainly provided by the alloying reaction and conversion reaction. Due to high electrical conductivity of rGO, the Cu3SbS4/rGO electrode exhibited lower charge transfer resistance and more stable structure during charge/discharge process, reversible capacity and cycle performance of the Cu3SbS4/rGO were significantly improved compared with pristine Cu3SbS4. Therefore, the Cu3SbS4/rGO showed a discharge capacity of 283.9 mAh g−1 after 500 cycles at 1 A g−1 in lithium-ion batteries, a discharge capacity of 243.4 mAh g−1 after 300 cycles at 1 A g−1 in potassium-ion batteries and a discharge capacity of 193.0 mAh g−1 at 9 A g−1 in sodium-ion batteries. The results showed that Sb-based bimetallic sulfide have a certain development prospect as the anodes for lithium/sodium/potassium-ion batteries.

Graphical abstract