Ionics

, Volume 18, Issue 5, pp 513–521

Nafion-sulfonated organosilica composite membrane for all vanadium redox flow battery

  • Xiangguo Teng
  • Jie Lei
  • Xuecai Gu
  • Jicui Dai
  • Yongming Zhu
  • Faqiang Li
Short Communication

DOI: 10.1007/s11581-012-0694-z

Cite this article as:
Teng, X., Lei, J., Gu, X. et al. Ionics (2012) 18: 513. doi:10.1007/s11581-012-0694-z

Abstract

A novel Nafion-sulfonated diphenyldimethoxysilane (N-sDDS) composite membrane is prepared and employed in vanadium redox flow battery (VRB). Ion exchange capacity, proton conductivity, water transport behavior, and the cell performances are characterized. Fourier transform-infrared and X-ray diffraction analysis indicate that the sulfonated diphenyldimethoxysilane (sDDS) particles are successfully introduced into the Nafion matrix. In VRB single cell test, the VRB with N-sDDS membrane exhibits nearly the same coulombic efficiency as the unmodified Nafion membrane, but higher voltage efficiency than that of the VRB with unmodified Nafion membrane. The VRB with N-sDDS composite membrane keeps a stable performance after 60 times charge–discharge test. In the self-discharge test, the VRB with the N-sDDS membrane presented a lower self-discharge rate than that of the VRB with Nafion membrane. All results show that the addition of s-DDS is a simple and efficient way to improve the conductivity of Nafion, and the composite membrane shows good potential use for VRB.

Keywords

Vanadium redox flow battery Sulfonated organosilica Composite membrane 

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Xiangguo Teng
    • 1
  • Jie Lei
    • 1
  • Xuecai Gu
    • 1
  • Jicui Dai
    • 1
  • Yongming Zhu
    • 1
  • Faqiang Li
    • 2
  1. 1.School of Marine Science and TechnologyHarbin Institute of Technology at WeihaiWeihaiChina
  2. 2.Qinghai Institute of Salt LakesChinese Academy of SciencesXiningChina