Thermal Runaway Mechanisms and Mitigation Strategies of Silicon‐Based Anode in Lithium‐Ion Batteries: A Review

ABSTRACT Silicon‐based anodes offer high capacity for next‐generation lithium‐ion batteries but face potential thermal safety concerns due to insufficient understanding of thermal runaway mechanisms. This review systematically analyzes thermal runaway mechanisms and mitigation strategies in silicon anode‐based lithium‐ion batteries. Discussions are conducted based on three materials categories of nano‐silicon, micro‐silicon, and silicon‐carbon composite materials, highlighting their advantages and challenges. Thermal runaway features involved in reaction of SEI, reaction of Si/Li _x Si, and chemical crosstalk are clearly revealed. Key mitigation strategies are summarized including interface modifications and electrolyte optimizations. The review provides a foundation for developing safe and high‐energy‐density lithium‐ion batteries.