Charge coup de fouet phenomenon in soluble lead redox flow battery

Nandanwar, Mahendra Naktuji; Kumar, Sanjeev

doi:10.1016/j.ces.2016.07.001

Cited by 16 publications

(15 citation statements)

References 26 publications

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“…The timeframe for the stabilization of HOR voltage is congruent with the position of the RFB discharge voltage transition which is found after 700-1000 s. The depletion of active species at the liquid side leads to mass transport limitations which, in conjunction with the stable potential at the negative electrode, can promote a cell voltage transition towards a lower discharge plateau. Analogous voltage anomalies such as the ones here observed are commonly reported for soluble lead RFBs [33]. They are described as the result of the formation of insoluble species at the electrode that subsequently dissolve.…”

Section: Resultssupporting

confidence: 85%

Hydrogen/manganese hybrid redox flow battery

et al. 2018

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Electrochemical energy storage is a key enabling technology for further integration of renewables sources. Redox flow batteries (RFBs) are promising candidates for such applications as a result of their durability, efficiency and fast response. However, deployment of existing RFBs is hindered by the relatively high cost of the (typically vanadium-based) electrolyte. Manganese is an earth-abundant and inexpensive element that is widely used in disposable alkaline batteries. However it has hitherto been little explored for RFBs due to the instability of Mn(III) leading to precipitation of MnO 2 via a disproportionation reaction. Here we show that by combining the facile hydrogen negative electrode reaction with electrolytes that suppress Mn(III) disproportionation, it is possible to construct a hydrogen/manganese hybrid RFB with high round trip energy efficiency (82%), and high power and energy density (1410 mW cm −2 , 33 Wh l −1 ), at an estimated 70% cost reduction compared to vanadium redox flow batteries.

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Section: Resultssupporting

confidence: 85%

Hydrogen/manganese hybrid redox flow battery

et al. 2018

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“…Nandanwar and Kumar found that natural convection induced by difference in concentration of Pb 2+ ions near the electrode surface and the bulk of the electrolyte plays a dominant role in the performance of a soluble lead battery with no external circulation. 98 This was later modeled by using a concentration difference driven body force term in the equations of motion. The augmented model, 98 with all the parameter values same as those reported by the same authors elsewhere, 53 very well explains the experimental data obtained in a narrow rectangular cell with no external ow as shown schematically in Fig.…”

Section: Soluble Lead Redox Batterymentioning

confidence: 99%

“…98 This was later modeled by using a concentration difference driven body force term in the equations of motion. The augmented model, 98 with all the parameter values same as those reported by the same authors elsewhere, 53 very well explains the experimental data obtained in a narrow rectangular cell with no external ow as shown schematically in Fig. 5.…”

Section: Soluble Lead Redox Batterymentioning

confidence: 99%

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Modelling of redox flow battery electrode processes at a range of length scales: a review

Chakrabarti

Kalamaras

Singh

et al. 2020

Sustainable Energy Fuels

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“…A model based on the conservation of mass, momentum and charge has been developed. This The second work by Nandanwar and Kumar [85] uses the same set up with planar electrodes and looks specifically at what it refers to as the coup de fouet effect. This effect is the brief peak/trough in voltage at the beginning of each charge/discharge cycle.…”

Section: Modelling and Simulationmentioning

confidence: 99%

Developments in soluble lead flow batteries and remaining challenges: An illustrated review

Krishna

Fraser

Wills

et al. 2018

Journal of Energy Storage

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The soluble-lead flow battery (SLFB) utilises methanesulfonic acid, an electrolyte in which Pb(II) ions are highly soluble. During charge, solid lead and lead dioxide layers are electrodeposited at the negative and positive electrodes respectively. During discharge, the deposits are electrochemically dissolved back into the recirculating electrolyte. The cell is normally undivided, which greatly reduces design complexity and cost, whilst also reducing the flow pumping requirements. Typical SLFB electrolytes offer up to 40 W h kg-1 of storage, with performance on the 100 cm 2 electrode scale reaching 90% charge and 80% voltage efficiencies across 100 cycles; however the SLFB has also been tested on the 1000 cm 2 electrode, four-cell stack scale. This review considers the SLFB, highlighting important developments and discussing remaining problems. In particular, methods to achieve effective stripping of lead dioxide at the positive electrode and to prevent lead dendrites at the negative electrode in order to prevent contact between the deposits, and thus shorting, are explored. A detailed understanding of the effect of Pb(II) and methanesulfonic acid concentration on the physical electrolyte properties is presented, and possible improvements to the electrodes and electrolyte composition in terms of additives are discussed in order to improve cell efficiency and longevity. Also, the importance of cell design in preventing the failure mechanisms and therefore achieving a high performance is highlighted. Studies on mathematical modelling and cycling simulation are also reviewed. Continuing research needs are listed and a forward look to future developments is taken.

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Charge coup de fouet phenomenon in soluble lead redox flow battery

Cited by 16 publications

References 26 publications

Hydrogen/manganese hybrid redox flow battery

Hydrogen/manganese hybrid redox flow battery

Modelling of redox flow battery electrode processes at a range of length scales: a review

Developments in soluble lead flow batteries and remaining challenges: An illustrated review

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