Journal
JOURNAL OF POWER SOURCES
Volume 355, Issue -, Pages 199-205Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.04.066
Keywords
Redox flow battery; Vanadium redox flow battery; Tubular cell design; Cylindrical cell; Polarization curve
Funding
- German Federal Ministry of Education and Research [BMBF FKZ: 03FS0436A]
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We present a vanadium redox flow battery with a tubular cell design which shall lead to a reduction of cell manufacturing costs and the realization of cell stacks with reduced shunt current losses. Charge/discharge cycling and polarization curve measurements are performed to characterize the single test cell performance. A maximum current density of 70 mAcm(-2) and power density of 142 Wl(-1) (per cell volume) is achieved and Ohmic overpotential is identified as the dominant portion of the total cell over potential. Cycling displays Coulomb efficiencies of approximate to 95% and energy efficiencies of approximate to 55%. During 113 h of operation a stable Ohmic cell resistance is observed. (C) 2017 Elsevier B.V. All rights reserved.
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