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<p>Silicon-carbon (Si-C) composite anodes are of considerable interest as future candidates in high-energy lithium-ion batteries because of the capability to combine the theoretical capacity of silicon with the structural stability and conductivity of carbon. This review gives a detailed study of the electrochemical behaviour of Si-C systems, the underlying lithiation-induced challenges, including high volume expansion, SEI stability, and mechanical fracture, and the innovations in composite architecture to address these challenges. The design strategies that enable high-performance Si-C anodes, such as core-shell and yolk-shell anodes, designed carbon structures, polymer-derived coating and enhanced binders are also identified, as well as how optimization of the electrolytes and prelithiation can further increase the coulombic efficiency and allow the anode to undergo repeated cycles.</p>

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Silicon-carbon composite anodes for high-energy lithium-ion batteries: challenges, design strategies, and recent advances

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Kishore V.S,
  • R. Praveen Surya,
  • J. Vinoth Kumar,
  • Munusamy Settu,
  • Prabu S,
  • Nithish Kumar M,
  • Tamilselvi Arumugam

摘要

Silicon-carbon (Si-C) composite anodes are of considerable interest as future candidates in high-energy lithium-ion batteries because of the capability to combine the theoretical capacity of silicon with the structural stability and conductivity of carbon. This review gives a detailed study of the electrochemical behaviour of Si-C systems, the underlying lithiation-induced challenges, including high volume expansion, SEI stability, and mechanical fracture, and the innovations in composite architecture to address these challenges. The design strategies that enable high-performance Si-C anodes, such as core-shell and yolk-shell anodes, designed carbon structures, polymer-derived coating and enhanced binders are also identified, as well as how optimization of the electrolytes and prelithiation can further increase the coulombic efficiency and allow the anode to undergo repeated cycles.