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Title: In-situ Investigation of Vanadium Ion Transport in Redox Flow Battery

Abstract

We will show a new method to differentiate the vanadium transport from concentration gradient and that from electric field. Flow batteries with vanadium and iron redox couples as the electro-active species were employed to investigate the transport behavior of vanadium ions in the presence of electric field. It was shown that electric field accelerated the positive-to-negative and reduced the negative-to-positive vanadium ions transport in charge process and affected the vanadium ions transport in an opposite way in discharge process. In addition, a method was designed to differentiate the concentration gradient-driven vanadium ions diffusion and electric field-driven vanadium ions migration. Simplified mathematical model was established to simulate the vanadium ions transport in real charge-discharge operation of flow battery. The concentration gradient diffusion coefficients and electric-migration coefficients of V2+, V3+, VO2+, and VO2+ across Nafion membrane were obtained by fitting the experimental data.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1047384
Report Number(s):
PNNL-SA-87264
Journal ID: ISSN 0378-7753; JPSODZ; TE1400000; TRN: US201216%%243
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 218; Journal Issue: 1; Journal ID: ISSN 0378-7753
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; DIFFUSION; ELECTRIC FIELDS; IRON; MATHEMATICAL MODELS; MEMBRANES; MIGRATION; OPERATION; TRANSPORT; VANADIUM; VANADIUM IONS; Vanadium ions transport, Electric field, Redox flow battery

Citation Formats

Luo, Qingtao, Li, Liyu, Nie, Zimin, Wang, Wei, Wei, Xiaoliang, Li, Bin, Chen, Baowei, and Yang, Zhenguo. In-situ Investigation of Vanadium Ion Transport in Redox Flow Battery. United States: N. p., 2012. Web. doi:10.1016/j.jpowsour.2012.06.066.
Luo, Qingtao, Li, Liyu, Nie, Zimin, Wang, Wei, Wei, Xiaoliang, Li, Bin, Chen, Baowei, & Yang, Zhenguo. In-situ Investigation of Vanadium Ion Transport in Redox Flow Battery. United States. doi:10.1016/j.jpowsour.2012.06.066.
Luo, Qingtao, Li, Liyu, Nie, Zimin, Wang, Wei, Wei, Xiaoliang, Li, Bin, Chen, Baowei, and Yang, Zhenguo. Wed . "In-situ Investigation of Vanadium Ion Transport in Redox Flow Battery". United States. doi:10.1016/j.jpowsour.2012.06.066.
@article{osti_1047384,
title = {In-situ Investigation of Vanadium Ion Transport in Redox Flow Battery},
author = {Luo, Qingtao and Li, Liyu and Nie, Zimin and Wang, Wei and Wei, Xiaoliang and Li, Bin and Chen, Baowei and Yang, Zhenguo},
abstractNote = {We will show a new method to differentiate the vanadium transport from concentration gradient and that from electric field. Flow batteries with vanadium and iron redox couples as the electro-active species were employed to investigate the transport behavior of vanadium ions in the presence of electric field. It was shown that electric field accelerated the positive-to-negative and reduced the negative-to-positive vanadium ions transport in charge process and affected the vanadium ions transport in an opposite way in discharge process. In addition, a method was designed to differentiate the concentration gradient-driven vanadium ions diffusion and electric field-driven vanadium ions migration. Simplified mathematical model was established to simulate the vanadium ions transport in real charge-discharge operation of flow battery. The concentration gradient diffusion coefficients and electric-migration coefficients of V2+, V3+, VO2+, and VO2+ across Nafion membrane were obtained by fitting the experimental data.},
doi = {10.1016/j.jpowsour.2012.06.066},
journal = {Journal of Power Sources},
issn = {0378-7753},
number = 1,
volume = 218,
place = {United States},
year = {2012},
month = {6}
}