Abstract
At present,commercial Li-ion batteries are hardly to satisfy the growing demand for high energy density,for this purpose,lithium metal batteries have attracted worldwide attention in recent years. However,its practical applications are hindered by the formation of Li dendrites and volume effect during Li plating/stripping process,which leads to a lot of safety hazards. Herein,we first employed MOF-derived V2O5 nanoparticles to decorate the carbon fiber cloth (CFC) backbone to acquire a lithiophilic 3D porous conductive framework (CFC@V2O5). Subsequently,the CFC@V2O5 skeleton was permeated with molten Li to prepare CFC@V2O5@Li composite anode. The CFC@V2O5@Li composite anode can be stably cycled for more than 1650 h at high current density (5 mA·cm-2) and areal capacity (5 mA·h·cm-2). The prepared full cell can initially maintain a high capacity of about 143 mA·h·g-1 even at a high current density of 5 C,and can still maintain 114 mA·h·g-1 after 1000 cycles.
基金项目
National Natural Science Foundation of China(21701083)
万方数据