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Title: Microporous Separators for Fe/V Redox Flow Batteries

Abstract

The Fe/V redox flow battery has demonstrated promising performance that is advantageous over other redox flow battery systems. The less oxidative nature of the Fe(III) species enables use of hydrocarbon - based ion exchange membranes or separators. Daramic(reg. sign) microporous polyethylene separators were tested on Fe/V flow cells using the sulphuric/chloric mixed acid - supporting electrolytes. Among them, Daramic(reg. sign) C exhibited good flow cell cycling performance with satisfactory repeatability over a broad temperature range of 5 - 50 degrees C. Energy efficiency (EE) of C remains above 67% at current densities of 50 - 80 cm{sup -2} in the temperature range from room temperature to 50 degrees C. The capacity decay problem could be circumvented through hydraulic pressure balancing by applying different pump rates to the positive and negative electrolytes. Stable capacity and energy were obtained over 40 cycles at room temperature and 40 degrees C. These results manifest that the extremely low-cost separators ($10/cm2) are applicable in the Fe/V flow battery system at an acceptable sacrifice of energy efficiency. This stands for a remarkable breakthrough in significant reduction of the capital cost of the Fe/V flow battery system, and is promising to promote its market penetration in gridmore » stabilization and renewable integration.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1050801
Report Number(s):
PNNL-SA-86902
Journal ID: ISSN 0378-7753; JPSODZ; TE1400000; TRN: US201218%%1570
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; CAPITALIZED COST; ENERGY EFFICIENCY; ION EXCHANGE MATERIALS; REDOX FLOW BATTERIES; TEMPERATURE RANGE

Citation Formats

Wei, Xiaoliang, Li, Liyu, Luo, Qingtao, Nie, Zimin, Wang, Wei, Li, Bin, Xia, Guanguang, Miller, Eric, Chambers, Jeff, and Yang, Zhenguo. Microporous Separators for Fe/V Redox Flow Batteries. United States: N. p., 2012. Web. doi:10.1016/j.jpowsour.2012.06.073.
Wei, Xiaoliang, Li, Liyu, Luo, Qingtao, Nie, Zimin, Wang, Wei, Li, Bin, Xia, Guanguang, Miller, Eric, Chambers, Jeff, & Yang, Zhenguo. Microporous Separators for Fe/V Redox Flow Batteries. United States. doi:10.1016/j.jpowsour.2012.06.073.
Wei, Xiaoliang, Li, Liyu, Luo, Qingtao, Nie, Zimin, Wang, Wei, Li, Bin, Xia, Guanguang, Miller, Eric, Chambers, Jeff, and Yang, Zhenguo. Thu . "Microporous Separators for Fe/V Redox Flow Batteries". United States. doi:10.1016/j.jpowsour.2012.06.073.
@article{osti_1050801,
title = {Microporous Separators for Fe/V Redox Flow Batteries},
author = {Wei, Xiaoliang and Li, Liyu and Luo, Qingtao and Nie, Zimin and Wang, Wei and Li, Bin and Xia, Guanguang and Miller, Eric and Chambers, Jeff and Yang, Zhenguo},
abstractNote = {The Fe/V redox flow battery has demonstrated promising performance that is advantageous over other redox flow battery systems. The less oxidative nature of the Fe(III) species enables use of hydrocarbon - based ion exchange membranes or separators. Daramic(reg. sign) microporous polyethylene separators were tested on Fe/V flow cells using the sulphuric/chloric mixed acid - supporting electrolytes. Among them, Daramic(reg. sign) C exhibited good flow cell cycling performance with satisfactory repeatability over a broad temperature range of 5 - 50 degrees C. Energy efficiency (EE) of C remains above 67% at current densities of 50 - 80 cm{sup -2} in the temperature range from room temperature to 50 degrees C. The capacity decay problem could be circumvented through hydraulic pressure balancing by applying different pump rates to the positive and negative electrolytes. Stable capacity and energy were obtained over 40 cycles at room temperature and 40 degrees C. These results manifest that the extremely low-cost separators ($10/cm2) are applicable in the Fe/V flow battery system at an acceptable sacrifice of energy efficiency. This stands for a remarkable breakthrough in significant reduction of the capital cost of the Fe/V flow battery system, and is promising to promote its market penetration in grid stabilization and renewable integration.},
doi = {10.1016/j.jpowsour.2012.06.073},
journal = {Journal of Power Sources},
issn = {0378-7753},
number = 1,
volume = 218,
place = {United States},
year = {2012},
month = {6}
}