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<p>CoMoS<sub>4</sub>/rGO is a highly attractive electrode for supercapacitors due to its impressive specific capacitance, affordability, eco-friendliness, and remarkable electrochemical reversibility. This work describes the hydrothermal synthesis of CoMoS<sub>4</sub>/rGO. Based on morphological study, CoMoS<sub>4</sub>/rGO exhibits a nanosheet on nanoneedle like structure leading to enhanced surface functions. A nanocomposite consisting of CoMoS<sub>4</sub>/rGO has enhanced the electrochemical characteristics. The result resulted in better specific capacitance, reaching 1639 Fg<sup>− 1</sup>, and enhanced charged transfer kinetics compared to the pure CoMoS<sub>4</sub> electrode. Utilising the favourable capacitive properties in a three-electrode configuration, we constructed an asymmetric capacitor (ASC) that demonstrates outstanding energy-storage capabilities. Specifically, it achieves an energy-storage performance of 33.05 Wh kg<sup>− 1</sup> and 2974&#xa0;W kg<sup>− 1</sup> when an ideal voltage of 1.5&#xa0;V is applied. Additionally, it maintains around 93% of its capacitance after 10,000 cycles. The outcomes suggest that the nanosheet like rGO on CoMoS<sub>4</sub> nanoneedles architecture has strong potential as an electrode in advanced ASC devices.</p>

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Growth of CoMoS4/rGO Nanoneedle Array Composite Electrode for High Performance Asymmetric Supercapacitor Application

  • 期刊论文

  • 发表日期：

    2025年4月5日

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  • C. Anitha Devi,
  • L. Chandra,
  • M. Aslam Manthrammel,
  • Mohd Shkir,
  • M. Saravanakumar

摘要

CoMoS4/rGO is a highly attractive electrode for supercapacitors due to its impressive specific capacitance, affordability, eco-friendliness, and remarkable electrochemical reversibility. This work describes the hydrothermal synthesis of CoMoS4/rGO. Based on morphological study, CoMoS4/rGO exhibits a nanosheet on nanoneedle like structure leading to enhanced surface functions. A nanocomposite consisting of CoMoS4/rGO has enhanced the electrochemical characteristics. The result resulted in better specific capacitance, reaching 1639 Fg− 1, and enhanced charged transfer kinetics compared to the pure CoMoS4 electrode. Utilising the favourable capacitive properties in a three-electrode configuration, we constructed an asymmetric capacitor (ASC) that demonstrates outstanding energy-storage capabilities. Specifically, it achieves an energy-storage performance of 33.05 Wh kg− 1 and 2974 W kg− 1 when an ideal voltage of 1.5 V is applied. Additionally, it maintains around 93% of its capacitance after 10,000 cycles. The outcomes suggest that the nanosheet like rGO on CoMoS4 nanoneedles architecture has strong potential as an electrode in advanced ASC devices.