Preparation of Nanotube TiO[sub 2]-Carbon Composite and Its Anode Performance in Lithium-Ion Batteries

Abstract

A nanocomposite between carbon and nanotube (CNTT) was prepared by addition of activated carbon during hydrothermal treatment of and following high-temperature calcinations. From morphological analysis using a scanning electron microscope, transmission electron microscope, and sorption profiles, it was revealed that nanotube was homogeneously dispersed with carbon in nanoscale for CNTT materials. When applied into the anode in a lithium-ion battery, CNTT electrodes displayed higher cyclability and better rate capability. From ac-impedance measurement, the total resistance was smaller in the CNTT electrode due to a homogeneously dispersed carbon in nanoscale and a more porous structure.