Research overview of micron silicon anode materials for lithium-ion batteries
The development of high-performance anode materials is a long running theme in the field of advanced materials used for lithium-ion batteries.Compared with commercial graphite anode,silicon is undoubtedly the development direction of the next generation of high-capacity anode materials with the natural advantage of high lithium storage capacity.Although nano-sized silicon has high theoretical specific capacity,low-tap-density and area-load seriously weaken the specific volume capacity and mass capacity.Therefore,designing micron silicon with high tap-density can reveal better comprehensive performance.In this overview,the problems existing in the application of micron silicon are first explained,and then the modification methods of micron silicon structure design,carbon composite and binder design are reviewed,which provides reference for the research of micron silicon.
anode materialmicron siliconsilicon carbon compositebinderlithium-ion batteriestheoretical specific capacityvolume expansion effect
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