Preparation and electrochemical properties of composites of carbon nanotubes loaded with Ag and TiO2 nanoparticle for use as anode material in lithium-ion batteries |
| |
Authors: | Jiayan Yan Shubin Yang Jingdan Yan Xiaohong Chen |
| |
Affiliation: | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, PR China |
| |
Abstract: | Carbon nanotubes (CNTs) loaded with Ag and TiO2 nanoparticles (Ag-TiO2/CNTs) are a composite showing promise as an anode material in lithium-ion batteries. Here we prepare Ag-TiO2/CNTs via hydrolysis and reduction processes. The morphology, structure, and electrochemical performance of the composite were investigated by transmission electron microscopy, X-ray diffraction, and a variety of electrochemical techniques. The results show that the TiO2 and Ag nanoparticles were uniformly deposited on the surface of CNTs with crystallite sizes of ∼12 and 30 nm, respectively. The Ag-TiO2/CNTs anode materials showed superior cycling stability and a high reversible capacity of 172 mAh/g after 30 cycles. Ag addition not only increases the electronic conductivity of the composites, but also allows convenient transfer of Li-ion in the composite structure. |
| |
Keywords: | Lithium-ion batteries Carbon nanotubes TiO2 Cycling performance AC impedance |
本文献已被 ScienceDirect 等数据库收录! |