Membranes for Vanadium Flow Batteries

Ghimire, Purna C.; Bhattaraj, Arjun; Wai, Nyunt; Lim, Tuti Mariana

doi:10.1002/9783527832767.ch25

Cited by 1 publication

(2 citation statements)

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“…Figure 5 depicts an exploded view of this electrochemical flow cell consisting of two identical half‐cells, which were separated by a Fumasep FAP‐450 anion exchange membrane with a dry thickness of 50 micrometres. The use of this membrane significantly reduces vanadium crossover compared to cation exchange membranes [47] . The membrane had an active wet surface of 25 cm 2 , which was employed to calculate current density.…”

Section: Methodsmentioning

confidence: 99%

“…The use of this membrane significantly reduces vanadium crossover compared to cation exchange membranes. [47] The membrane had an active wet surface of 25 cm 2 , which was employed to calculate current density. On each side of the cell, the electrolyte tubing went through the aluminium backplate (1), the insulator (2) and the copper current collector (3) before being connected directly to the graphite monopolar plates (4).…”

Section: Cell Configuration and Flow Circuitmentioning

confidence: 99%

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Improved Vanadium Flow Battery Performance through a Pulsating Electrolyte Flow Regime

De Wolf,

Rossen,

De Rop

et al. 2023

Batteries & Supercaps

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The interest in flow batteries as energy storage devices is growing due to the rising share of intermittent renewable energy sources. In this work, the performance of a vanadium flow battery is improved, without altering the electrochemical cell, by applying a pulsating flow. This novel flow battery flow regime aims to enhance performance by improving its mass transfer properties. Both the pulse volume and frequency have an influence on the battery performance, and lead to a 38.7 % increase in accessible discharge capacity compared to the conventional steady flow regime at values of 0.40 cm3 and 2.4 Hz in this cell, respectively. Furthermore, at these parameter settings a reduction of the mass transfer resistance by 71.4 % is achieved at 0.2 cm3/min ⋅ cm2. These results show that a pulsating flow can be beneficial in certain conditions, opening new possibilities for boosting performance in flow batteries.

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Section: Methodsmentioning

confidence: 99%

Section: Cell Configuration and Flow Circuitmentioning

confidence: 99%