Abstract
We use modified carbon nanotubes (CNTs-COOC4H9) as a substrate to crystallize lithium iron phosphate on its surface in a non-uniform nucleation mode by controlling the nucleation driving force. Due to the presence of organic matter on the carbon nanotubes, a kind of "tree-root-like" electronic channels are formed inside the material after pyrolysis at high temperature, and these channels are connected by graphene oxide (GO), which dramatically enhances the electronic conductivity of the material. The prepared material achieves a reversible specific capacity of 168.2 mAh g-1 at 0.2C and a capacity retention of 97.7 % after 200 cycles. Even at high rates (2C, 5C, and 10C), they exhibit discharge specific capacities of 154.2, 135.8, and 114.1 mAh g-1 accordingly.