Issue 43, 2014
From the journal:

Journal of Materials Chemistry A

Better than crystalline: amorphous vanadium oxide for sodium-ion batteries†

E. Uchaker,a   Y. Z. Zheng,a   S. Li,a   S. L. Candelaria,a   S. Hua  and  G. Z. Cao*a  

* Corresponding authors

a Department of Materials Science & Engineering, University of Washington, Seattle, WA, USA
E-mail: gzcao@u.washington.edu

Abstract

Amorphous and nanocrystalline vanadium pentoxide (V2O5) were prepared through a combination of sol–gel processing paired with electrochemical deposition and investigated as cathodes for sodium-ion batteries. Amorphous V2O5 demonstrated superior electrochemical properties upon sodiation as compared to its crystalline counterpart. More specifically, amorphous vanadium pentoxide had a measured capacity of 241 mA h g−1, twice the capacity of its crystalline contemporary at 120 mA h g−1. In addition, the amorphous vanadium pentoxide demonstrated a much higher discharge potential, energy density, and cycle stability. The development of amorphous materials could enable the usage and design of previously unexplored electrode materials; herein, the possible relationship between the improved sodiation properties and the amorphous structure is discussed.

Graphical abstract: Better than crystalline: amorphous vanadium oxide for sodium-ion batteries

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C4TA03788J
Article type
Communication
Submitted
22 Jul 2014
Accepted
10 Sep 2014
First published
10 Sep 2014

J. Mater. Chem. A, 2014,2, 18208-18214

Permissions

Request permissions

Better than crystalline: amorphous vanadium oxide for sodium-ion batteries

E. Uchaker, Y. Z. Zheng, S. Li, S. L. Candelaria, S. Hu and G. Z. Cao, J. Mater. Chem. A, 2014, 2, 18208 DOI: 10.1039/C4TA03788J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements