二氧化钛/木质素多孔碳负极材料的研究

With the lithium ion batteries are widely used in vehicles and other portable electronic devices, urgent need to develop better security and electrochemical properties of the electrode material to meet the demand. Titanium dioxide anode materials have received widespread attention due to their high natural abundance, low cost, and good safety. However, its low electrical conductivity and lithium ion conductivity limit their commercial applications. In this paper, the titanium dioxide/lignin porous carbon anode material was prepared by loading titanium dioxide crystal particles onto the surface of the hierarchical porous carbon from lignin (LHPC). In addition, various physical performance tests and electrochemical performance tests were carried out in order to obtain titanium dioxide-based anode materials with excellent electrochemical properties. The results show that the titanium dioxide/lignin porous carbon composite exhibites perfect rate capability, a stable high capacity and excellent cycling stability as an anode material in Li-ion battery. The superior electrochemical properties of titanium dioxide/lignin porous carbon composite are mainly attributed to the perfect conductive carbon network and the high specific surface area of LHPC.