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<p>Cu<sub>2</sub>SnS<sub>3</sub> (CTS) has emerged as a compelling candidate for supercapacitor (SC) electrodes due to its tunable electronic structure and intrinsic pseudocapacitive behavior. However, its practical application remains limited by poor electrical conductivity, structural instability during cycling, and morphology-dependent performance. To address these challenges, we report a facile hydrothermal synthesis of highly porous CTS nanorods with engineered surface chemistry and nanostructure. Strategic incorporation of tin at the surface induces oxygen vacancies, enhancing charge transport and ion diffusion kinetics. The resulting CTS nanorods exhibit a distinctive rod-like morphology with abundant electroactive sites and robust mechanical integrity. Electrochemical evaluation demonstrates a high specific capacitance of 576.9 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and excellent cycling stability, retaining 94% of its initial capacitance after 5000 cycles. Importantly, the integration of this defect-engineered CTS framework aligns with the growing demand for flexible, lightweight, and biocompatible power sources in assistive support technologies, including wearable sensors, rehabilitation exoskeletons, and neuroprosthetic systems. The engineered oxygen vacancies and optimized nanostructure collectively enable improved electronic conductivity and enhanced redox activity. This work underscores the potential of ternary sulfides as sustainable electrode materials for next-generation flexible energy storage devices and highlights a pathway toward the energy autonomy of assistive power system technologies.</p>

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Design and strategies of three-dimensional framework Cu2SnS3 nanorods for high-performance supercapacitors in next-generation assistive power device

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Ranjith Balu,
  • Suganthi Muthusamy,
  • Anthoniammal Panneerselvam,
  • Mangalaraja Ramalinga Viswanathan,
  • Saravanan Pandiaraj,
  • P. E. Saranya,
  • Jagadeesh Kumar Alagarasan,
  • Vasudeva Reddy Minnam Reddy,
  • P. C. Karthika,
  • Guatham Devendrapandi

摘要

Cu2SnS3 (CTS) has emerged as a compelling candidate for supercapacitor (SC) electrodes due to its tunable electronic structure and intrinsic pseudocapacitive behavior. However, its practical application remains limited by poor electrical conductivity, structural instability during cycling, and morphology-dependent performance. To address these challenges, we report a facile hydrothermal synthesis of highly porous CTS nanorods with engineered surface chemistry and nanostructure. Strategic incorporation of tin at the surface induces oxygen vacancies, enhancing charge transport and ion diffusion kinetics. The resulting CTS nanorods exhibit a distinctive rod-like morphology with abundant electroactive sites and robust mechanical integrity. Electrochemical evaluation demonstrates a high specific capacitance of 576.9 F g−1 at 1 A g−1 and excellent cycling stability, retaining 94% of its initial capacitance after 5000 cycles. Importantly, the integration of this defect-engineered CTS framework aligns with the growing demand for flexible, lightweight, and biocompatible power sources in assistive support technologies, including wearable sensors, rehabilitation exoskeletons, and neuroprosthetic systems. The engineered oxygen vacancies and optimized nanostructure collectively enable improved electronic conductivity and enhanced redox activity. This work underscores the potential of ternary sulfides as sustainable electrode materials for next-generation flexible energy storage devices and highlights a pathway toward the energy autonomy of assistive power system technologies.