The Synthesis and Characterization of Cerium Carbonate Hydroxide Nanorods as an Anode for Lithium-Ion Batteries

摘要

Nanorods cerium carbonate hydroxide, CeCO3OH, was synthesized through a low-temperature reaction route. The data of x-ray diffraction and scanning electron microscopy revealed that the as-prepared samples were CeCO3OH nanorods. The diameters of the nanorods were in the range of 50-100 nm, and the lengths were around 300-500 nm. As an anode of a lithium ion battery, the charge-discharge capacity, cyclability and lithium-ion diffusion kinetics of CeCO3OH nanorods were investigated. The calculated lithium ion diffusion coefficient was 1.36 x 10(-19) cm(2) s(-1). The initial discharge capacity was about 621.6 mA h g(-1) at 0.2 mA cm(-2) in 0.05-2.5 V. After 100 cycles, the discharge capacity stabilized at about 362 mA h g(-1) and the Coulombic efficiency was nearly 98%, indicating the potential application in anodes of lithium-ion batteries.