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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Cu Doped V2O5·xH2O Nanostructures for Rechargeable Lithium Batteries
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 172-175)
Author(s): Wei-zhong Wu, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Shu-ping Pang, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Gui-cun Li, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Zhi-kun Zhang, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Ke-zheng Chen, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China
Abstract: Cu doped V2O5·xH2O nanostructures have been synthesized by the reaction between peroxovanadic acid and copper acetic under hydrothermal conditions without the aid of any template and surfactant. The morphologies of Cu doped V2O5·xH2O nanostructures can be adjusted by controlling the molar ratio of Cu and V in the reagents. As the concentration of copper acetic increases, nanobelts can be changed into urchin- like nanostructures composed of radially aligned nanorods, which can be an important candidate of cathode materials for lithium batteries. The electrochemical test shows that discharge specific capacity of Cu doped V2O5·xH2O nanostructures is related to the Cu content. Cu doped V2O5·xH2O nanostructures with Cu/V molar ratio of 0.65 exhibit an initial high discharge specific capacity of 290 mAhg-1 in the potential range of 1.5–3.8 V and the capacity remains 150 mAhg-1 after 20 cycles.
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