Monday, 20 June 2016
Riverside Center (Hyatt Regency)
Hierarchical meso-/macroporous anatase TiO2 (HPT) was synthesized from the hydrolysis of a titanium metal-organic framework precursor followed by calcination in air. The HPT possesses bimodal and hierarchical porosity: mesopores with pore diameters of 12, 16 and 28 nm along with macropores with pore diameters of up to 185 nm.This unique porous feature enables the superior rate capability and excellent cycling stability of anatase TiO2 as an anode for rechargeable lithium-ion batteries(LIBs). At a rate of 5 C, the specific discharge capacity of the HPT electrode is about 155 mA h g-1. After 200 cycles at 5 C charging/discharging rates, the capacity loss was only ~6.5 %. The superior rate capability and excellent cycling stability make HPT a promising anode material for fast rechargeable LIBs.