Review on research of rate performance of Si/C composite anode for lithium-ion battery
Lithium-ion batteries(LIBs)have been widely applied in fields such as electric vehicles,mobile electronic devices,space flight and aviation due to their long cycle life,high energy density,and low self-discharge rate.However,the theoretical specific capacity of traditional graphite anodes,which is only 372mAh·g-1,cannot meet the requirements for high-capacity LIBs.Silicon-based anode materials with high specific capacity(4200mAh·g-1),abundant resources,and simple preparation technology are expected to replace graphite as the next generation of anode materials.However,the development of silicon anode material has been limited by low electrical conductivity and enormous volume expansion during the charge/discharge processes.Nevertheless,Si/C composite materials can combine the advantages of both materials,forming a stable structure and excellent electrical conductivity anode material.This article reviews recent research progress on Si/C composite anode materials,including the influence factors for high-rate Si/C materials,modi-fication progress and solutions to enhance the performance of Si/C composite anode material.
Lithium-ion batterysilicon anodeanode materialrate performanceSi/C composite material
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