Characterization of Vanadium Ion Uptake in Sulfonated Diels Alder Poly(phenylene) Membranes

被引：16

作者：

Lawton, Jamie S. ^{[1
]}

Jones, Amanda M. ^{[1
]}

Tang, Zhijiang ^{[1
]}

Lindsey, Melanie ^{[1
]}

Fujimoto, Cy ^{[2
]}

Zawodzinski, Thomas A. ^{[1
,3
,4
]}

机构：

[1] Univ Tennessee, Dept Biomol & Chem Engn, Knoxville, TN 37996 USA

[2] Sandia Natl Labs, Organ Mat Sci, Albuquerque, NM 87123 USA

[3] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[4] King Abdulaziz Univ, Dept Chem, Jeddah 21413, Saudi Arabia

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 01期

关键词：

NITROXIDE-FREE-RADICALS; LINE-SHAPE CHANGES; EXCHANGE MEMBRANE; NAFION MEMBRANES; SELF-DIFFUSION; SPIN-EXCHANGE; FUEL-CELL; REDOX; METHANOL; LIQUIDS;

D O I：

10.1149/2.0291601jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Sulfonated diels alder poly(phenylene) (SDAPP), alternative aromatic hydrocarbon membranes for vanadium redox flow batteries (VRFBs) are characterized using electron paramagnetic resonance (EPR). Membranes soaked in sulfuric acid and vanadyl sulfate are analyzed to determine the membrane environment in which the vanadyl ion (VO2+) diffuses in the membranes. These results are compared to Nafion 117 membranes. In contrast to Nafion, the VO2+ in SDAPP membranes exists in two different environments. The results of analysis of rotational diffusion determined from fits the EPR spectral lineshapes in comparison with previously reported permeation studies and measurements of partitioning functions reported here suggest that the diffusion pathways in SDAPP are considerably different than in Nafion. (C) The Author(s) 2015. Published by ECS. All rights reserved.

引用

页码：A5229 / A5235

页数：7

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