Antimony-doped tin oxide as an efficient electrocatalyst toward the VO2+/VO2+ redox couple of the vanadium redox flow battery

Yang Lv; Chunmei Yang; Haining Wang; Jin Zhang; Yan Xiang; Shanfu Lu

doi:10.1039/C9CY01793C

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

Antimony-doped tin oxide as an efficient electrocatalyst toward the VO²⁺/VO₂⁺ redox couple of the vanadium redox flow battery†

Yang Lv,‡^a Chunmei Yang,‡^a Haining Wang,

^a Jin Zhang,

^a Yan Xiang

*^a and Shanfu Lu

*^a

Author affiliations

* Corresponding authors

^a Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Space and Environment, Beihang University, Beijing, China
E-mail: xiangy@buaa.edu.cn, lusf@buaa.edu.cn

Abstract

The low electronic conductivity of metallic oxides limits their electrocatalytic activity toward the VO²⁺/VO₂⁺ redox reaction in a vanadium redox flow battery (VRFB). In this work, antimony-doped tin oxide (ATO) nanoparticles achieve higher electronic conductivity than tin dioxide nanoparticles. In addition, the doped Sb(V) enhances the negative charge on the surface of the SnO₂, which contributes to adsorption of vanadium ions on the ATO surface. As a result, the reversibility of the VO²⁺/VO₂⁺ redox reaction on ATO is much better than that on SnO₂. The energy efficiency of the VRFB with optimized ATO nanoparticle loading on graphite felts is improved to 73.09% in comparison with that with pristine graphite felt (61.00%) or SnO₂ nanoparticle-coated graphite felt (65.47%) at 300 mA cm⁻². Thus, ATO nanoparticle-coated graphite felt is a desirable positive electrode for VRFB applications.

Download options Please wait...

Supplementary files

Supplementary information PDF (1420K)

Article information

DOI: https://doi.org/10.1039/C9CY01793C
Article type: Paper
Submitted: 04 Sep 2019
Accepted: 05 Mar 2020
First published: 06 Mar 2020

Download Citation

Catal. Sci. Technol., 2020,10, 2484-2490

Permissions

Request permissions

Antimony-doped tin oxide as an efficient electrocatalyst toward the VO²⁺/VO₂⁺ redox couple of the vanadium redox flow battery

Y. Lv, C. Yang, H. Wang, J. Zhang, Y. Xiang and S. Lu, Catal. Sci. Technol., 2020, 10, 2484 DOI: 10.1039/C9CY01793C

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.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Catalysis Science & Technology