Journal
JOURNAL OF POWER SOURCES
Volume 275, Issue -, Pages 294-297Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.10.208
Keywords
Polyoxyethylene (20) sorbitan monolaurate; Surface active agent; Current efficiency; Polybromide complex; Zinc dendrite
Funding
- Korea Institute of Energy Technology Evaluation and Planning [NP2012-0021]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20122010100100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A sustained decrease in current efficiency (CE) is a commonly observed phenomenon in a zinc/bromine redox flow battery. To circumvent this problem, that is, to improve the CE and system stability of the redox flow battery, a surface active agent (SAA), polyoxyethylene (20) sorbitan monolaurate, is introduced as an additive. To investigate the effect of this SAA on the cell performance, polarization testing is performed and the electrode surface is observed after 32 cycles of charge-discharge testing. Adding the SAA facilitates catholyte mixing, leading to an effective reduction of bromine during discharging. (C) 2014 Elsevier B.V. All rights reserved.
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