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<p>This study was conducted to synthesize and analyze commercial bismuth sulfide/activated carbon composites using the hydrothermal method. The main objectives were to synthesize this composite, understand its characteristics, and evaluate its performance as an anode for lithium-ion batteries. The synthesis of the composite used the precursors of&#xa0;bismuth nitrate pentahydrate and thiourea mixed with commercial activated carbon through the hydrothermal method. Furthermore, hydrothermal treatment at 120°C for varying durations (16, 24, 32, 40, and 48 h), denoted as BFC16, BFC24, BFC32, BFC40, and BFC48&#xa0;was undertaken. The composite products were characterized using FTIR, XRD, SEM–EDX mapping, and LCR meter. Finally, the performance of the composites as lithium-ion battery anodes was assessed through electrochemical impedance spectroscopy, cyclic voltammetry, and charging tests. The findings showed that the BFC32 composite had electrical and ionic conductivities of 4.42 × 10<sup>–3</sup>&#xa0;S.cm<sup>−1</sup> and 8.53 × 10<sup>–3</sup> S.cm<sup>−1</sup>. In addition, these composites also exhibit specific charge and discharge capacities of 624 mA.h.g<sup>−1</sup> and 614 mA.h.g<sup>−1</sup> at a current density of 100 mA.g<sup>−1</sup>.</p>

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Enhancement of electrochemical performance of bismuth sulfide combined with commercial activated carbon as active materials in lithium-ion battery anodes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月21日

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  • Yayuk Astuti,
  • Nabila Putri Aninda,
  • Ahmad Suseno,
  • Adi Darmawan,
  • Titik Lestariningsih,
  • Yurike Candra Sevia

摘要

This study was conducted to synthesize and analyze commercial bismuth sulfide/activated carbon composites using the hydrothermal method. The main objectives were to synthesize this composite, understand its characteristics, and evaluate its performance as an anode for lithium-ion batteries. The synthesis of the composite used the precursors of bismuth nitrate pentahydrate and thiourea mixed with commercial activated carbon through the hydrothermal method. Furthermore, hydrothermal treatment at 120°C for varying durations (16, 24, 32, 40, and 48 h), denoted as BFC16, BFC24, BFC32, BFC40, and BFC48 was undertaken. The composite products were characterized using FTIR, XRD, SEM–EDX mapping, and LCR meter. Finally, the performance of the composites as lithium-ion battery anodes was assessed through electrochemical impedance spectroscopy, cyclic voltammetry, and charging tests. The findings showed that the BFC32 composite had electrical and ionic conductivities of 4.42 × 10–3 S.cm−1 and 8.53 × 10–3 S.cm−1. In addition, these composites also exhibit specific charge and discharge capacities of 624 mA.h.g−1 and 614 mA.h.g−1 at a current density of 100 mA.g−1.