Preparation and lithium storage properties of C@TiO2/3D carbon hollow sphere skeleton composites

Rational design and facile synthesis of hybrid TiO2 anode materials with high electrical conductivity and ionic accessibility are urgently desired to construct high performance litium-ion batteries. In this work, We first utilize conductive hollow porous pollen carbon microsphere as skeleton to load C@TiO2 nanoparticles. The C@TiO2/3D pollen carbon (CTPC) composite with hollow porous structure has been successfully developed via a simple method. As a result, CTPC-700 (calcination temperature of 700 degrees C) electrode material exhibits superior electrochemical performance for lithium ion batteries, delivering an outstanding specific capacity of 148 mA h g(-1) up to 1000 cycles at 5.0C and a superior high-rate performance of 112 mA h g(-1) at 10.0C. Therefore, the special structure of the as-prepared composites can improve the stability of the electrode and enhance its electrochemical performance, which is promising for the next-generation of lithium-ion batteries. (C) 2019 Elsevier B.V. All rights reserved.