Recent status, key strategies, and challenging prospects for fast charging silicon-based anodes for lithium-ion batteries

As the global electric vehicle market grows rapidly and the demand for fast-charging battery technology continues to increase, the development of high-performance lithium-ion batteries (LIBs) with fast-charging capability has become an inevitable trend. However, the application of silicon-based anode in lithium-ion batteries suffers from key technical obstacles such as volume expansion and other problems, capacity degradation during fast charging, and safety hazards. This paper reviews recent advances, fundamentals, key strategies, and challenging perspectives on silicon anodes for realizing fast-charging lithium-ion batteries. First, the main challenges of fast-charging silicon anode are analyzed by revealing the lithium storage mechanism of silicon anode. Then, we outline the key strategies for realizing fast-charging lithium-ion batteries and recent advances in improving rate performance involving composite design, structural design, multifunctional binder and electrolyte design. Finally, the challenges and future directions for the development of fast-charging lithium-ion batteries are highlighted, providing insights into the further commercialization of fast-charging lithium-ion batteries.