title: Morphology-dependent vanadium oxide nanostructures grown on Ti foil for Li-ion battery.
abstract: Vanadium oxide is considered as a potential cathode material for lithium-ion batteries, while its performance is significantly restricted by its poor Li(+) ion diffusion rate and low electric conductivity. These ion and charge transport rates, however, are also well correlated with the 3-dimensional (3D) morphologies/structures of the electroactive materials. Herein, we synthesized three different nanostructured vanadium oxides on Ti foils. The comparison of electrochemical properties of these materials shows that the structures of electrodes have great influences on their performances. Among these structures, the nanoribbons are most beneficial for fast charge transfer and reduced contact resistance. In addition, the spaces between each nanoribbon provide efficient ion transport pathways and sufficient electrolyte penetration. The initial discharge and charge capacities of vanadium oxide nanoribbon reach to 322 and 310mAhg(-)(1), with a reversible discharge/charge capacity of 200mAhg(-)(1) at the current rate of 1C (1C=300mAg(-)(1)).
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Lunzhen
authors.initials: L
authors.lastname: Wei
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Yuhang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Ming
authors.initials: M
authors.lastname: Xu
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China. Electronic address: gfzheng@fudan.edu.cn.
authors.forename: Gengfeng
authors.initials: G
authors.lastname: Zheng
keywords: Honeycomb; Li-ion battery; Nanoplate; Nanoribbon; V(2)O(5)