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<p>Developing advanced electrode materials with both high energy density and outstanding long-term stability is essential for next-generation supercapacitors. In this work, a novel FeCoW/rGO nanocomposite was synthesized via a one-pot hydrothermal method and thoroughly characterized, revealing hierarchical flower-like FeCoW nanospheres uniformly anchored on reduced graphene oxide to form a highly porous, three-dimensional architecture. The electrode displayed a high specific capacitance of 525.16&#xa0;F g⁻¹ at 1&#xa0;A g⁻¹, a notable energy density of 26.25 Wh kg⁻¹, and remarkable cycling stability, retaining 94.48% of its initial capacitance over 5000 cycles. This superior performance arises from the synergistic redox activity of Fe, Co, and W, the conductive rGO framework, and the unique hierarchical structure, which collectively promote abundant active sites, facilitate rapid ion/electron transport, and alleviate mechanical stress during cycling. These results establish FeCoW/rGO as a promising and durable electrode material for advanced energy storage applications.</p>

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Synergistic trimetallic FeCoW/rGO nanocomposite as a durable and high-performance electrode for advanced supercapacitors

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Ali B. M. Ali,
  • Ammar Yasir Ahmed,
  • Premkumar R.,
  • Badri Narayan Sahu,
  • T. Gomathi,
  • Gaganjot Kaur,
  • Bekzod Matyakubov,
  • Doniyor Jumanazarov,
  • Mumtaj Shah,
  • M. A. Diab,
  • P. D. Jangir

摘要

Developing advanced electrode materials with both high energy density and outstanding long-term stability is essential for next-generation supercapacitors. In this work, a novel FeCoW/rGO nanocomposite was synthesized via a one-pot hydrothermal method and thoroughly characterized, revealing hierarchical flower-like FeCoW nanospheres uniformly anchored on reduced graphene oxide to form a highly porous, three-dimensional architecture. The electrode displayed a high specific capacitance of 525.16 F g⁻¹ at 1 A g⁻¹, a notable energy density of 26.25 Wh kg⁻¹, and remarkable cycling stability, retaining 94.48% of its initial capacitance over 5000 cycles. This superior performance arises from the synergistic redox activity of Fe, Co, and W, the conductive rGO framework, and the unique hierarchical structure, which collectively promote abundant active sites, facilitate rapid ion/electron transport, and alleviate mechanical stress during cycling. These results establish FeCoW/rGO as a promising and durable electrode material for advanced energy storage applications.