Issue 51, 2017

Y-doped V2O5 with enhanced lithium storage performance

Abstract

Y-doped V2O5 was prepared by the sol–gel method combined with the freeze drying technique followed by annealing in air. The microstructure of the Y-doped V2O5 was analyzed by XRD, SEM, XPS, and first-principles calculations. The electrochemical performance of the Y-doped V2O5 was characterized by CV, EIS, and charge–discharge tests. The results demonstrated that Y doping had great influence on the morphology and crystalline orientation of the prepared V2O5 sample. In particular, Y formed covalent bonds with the adjacent O atoms within the V2O5 layers and decreased the bond orders of the neighboring V–O bonds. Compared with undoped V2O5, Y-doped V2O5 showed much improved rate capability, higher lithium ion diffusion coefficient, lower electrochemical reaction resistance, and greatly enhanced cycling stability. Y-doped V2O5 could be a promising cathode material for lithium ion batteries.

Graphical abstract: Y-doped V2O5 with enhanced lithium storage performance

Article information

Article type
Paper
Submitted
05 Apr 2017
Accepted
20 Jun 2017
First published
23 Jun 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 32327-32335

Y-doped V2O5 with enhanced lithium storage performance

J. H. Yao, Z. L. Yin, Z. G. Zou and Y. W. Li, RSC Adv., 2017, 7, 32327 DOI: 10.1039/C7RA03885B

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