Research progress in non-graphite anode materials for Li-ion battery
The research progress of alloy materials,transition metal compounds and silicon-based compounds as anode materials for Li-ion battery is reviewed.Alloy anode materials face issues such as low Coulombic efficiency and significant capacity loss during the initial charge/discharge.Through morphological improvements and material structure manipulations,batteries can achieve Coulombic efficiencies of up to 99.7%and maintain stability within 150-200 cycles.Transition metal compound anodes,including oxides,sulfides and phosphides,have issues such as volume expansion and continuous decomposition of electrolytes.Electrochemical performance can be improved by nanoengineering technology and composite material design.The theoretical capacity of silicon-based anode materials is high,but there are issues of volume expansion and poor conductivity.The cycle performance and initial Coulombic efficiency can be improved by micro-nano architecture design,silicon alloy structure control and pre-lithiation.
Li-ion batterynon-graphite anode materialalloy materialtransition metal compoundsilicon-based compound
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维普
