Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Acid Pretreatment to Enhance Proton Transport of a Polysulfone‐Polyvinylpyrrolidone Membrane for Application in Vanadium Redox Flow Batteries

Acid Pretreatment to Enhance Proton Transport of a Polysulfone‐Polyvinylpyrrolidone Membrane for... An acid pretreatment strategy is developed to enhance the proton transport of polysulfone‐polyvinylpyrrolidone (PSF‐PVP) membranes for application in vanadium redox flow batteries (VRFB). The acid pretreatment leads to the formation of ionic conducting clusters with a size of around d=15.41 nm in the membrane (p‐PSF‐PVP). As a result, the proton conductivity and proton/vanadium ion selectivity of the p‐PSF‐PVP membrane increases to 6.60×10−2 S cm−1 and 10.63×107 S min cm−3, respectively, values significantly higher than 2.30×10−2 S cm−1 and 6.67×107 S min cm−3 of the pristine PSF‐PVP membrane. Moreover, a VRFB assembled with the p‐PSF‐PVP membrane exhibits a high coulombic efficiency of 98.6 % and an outstanding energy efficiency of 88.5 %. The results indicate that treatment with either sulfuric acid or phosphoric acid leads to an improvement of membrane properties, and the acid pretreatment is a promising strategy to significantly enhance the performance of the PSF‐PVP membrane for VRFB application. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ChemPlusChem Wiley

Acid Pretreatment to Enhance Proton Transport of a Polysulfone‐Polyvinylpyrrolidone Membrane for Application in Vanadium Redox Flow Batteries

Loading next page...
 
/lp/wiley/acid-pretreatment-to-enhance-proton-transport-of-a-polysulfone-oj6tMMwgOP

References (30)

Publisher
Wiley
Copyright
© 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
2192-6506
eISSN
2192-6506
DOI
10.1002/cplu.201800243
Publisher site
See Article on Publisher Site

Abstract

An acid pretreatment strategy is developed to enhance the proton transport of polysulfone‐polyvinylpyrrolidone (PSF‐PVP) membranes for application in vanadium redox flow batteries (VRFB). The acid pretreatment leads to the formation of ionic conducting clusters with a size of around d=15.41 nm in the membrane (p‐PSF‐PVP). As a result, the proton conductivity and proton/vanadium ion selectivity of the p‐PSF‐PVP membrane increases to 6.60×10−2 S cm−1 and 10.63×107 S min cm−3, respectively, values significantly higher than 2.30×10−2 S cm−1 and 6.67×107 S min cm−3 of the pristine PSF‐PVP membrane. Moreover, a VRFB assembled with the p‐PSF‐PVP membrane exhibits a high coulombic efficiency of 98.6 % and an outstanding energy efficiency of 88.5 %. The results indicate that treatment with either sulfuric acid or phosphoric acid leads to an improvement of membrane properties, and the acid pretreatment is a promising strategy to significantly enhance the performance of the PSF‐PVP membrane for VRFB application.

Journal

ChemPlusChemWiley

Published: Oct 1, 2018

Keywords: ; ; ; ;

There are no references for this article.