Influence of Metal Impurities or Additives in the Electrolyte of a Vanadium Redox Flow Battery

Park, Jong Ho; Park, Jung Jin; Lee, Hyun Ju; Min, Byung Seok; Yang, Jung Hoon

doi:10.1149/2.0491807jes

Cited by 30 publications

(16 citation statements)

References 15 publications

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“…Recently, Park et al performed a systematic study on the influence of impurities on VRFBs. Influence of alkali ions and transition metal ions were investigated.…”

Section: Degradation Of Vrfb Componentsmentioning

confidence: 99%

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A review of all‐vanadium redox flow battery durability: Degradation mechanisms and mitigation strategies

et al. 2019

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Summary The all‐vanadium redox flow battery (VRFB) is emerging as a promising technology for large‐scale energy storage systems due to its scalability and flexibility, high round‐trip efficiency, long durability, and little environmental impact. As the degradation rate of the VRFB components is relatively low, less attention has been paid in terms of VRFB durability in comparison with studies on performance improvement and cost reduction. This paper reviews publications on performance degradation mechanisms and mitigation strategies for VRFBs in an attempt to achieve a systematic understanding of VRFB durability. Durability studies of individual VRFB components, including electrolyte, membrane, electrode, and bipolar plate, are introduced. Various degradation mechanisms at both cell and component levels are examined. Following these, applicable strategies for mitigating degradation of each component are compiled. In addition, this paper summarizes various diagnostic tools to evaluate component degradation, followed by accelerated stress tests and models for aging prediction that can help reduce the duration and cost associated with real lifetime tests. Finally, future research areas on the degradation and accelerated lifetime testing for VRFBs are proposed.

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“…Recently, Park et al performed a systematic study on the influence of impurities on VRFBs. Influence of alkali ions and transition metal ions were investigated.…”

Section: Degradation Of Vrfb Componentsmentioning

confidence: 99%

“…Suggested specifications for metal impurities in the VRFB electrolyte45 (reproduced with permission from ECS)…”

mentioning

confidence: 99%

A review of all‐vanadium redox flow battery durability: Degradation mechanisms and mitigation strategies

et al. 2019

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“…However, if one considers the economics of the entire system, it is recommended to identify and distinguish between impurities that have a relatively insignificant effect and those that cause fatal performance degradation 50 . Accordingly, the influence of molybdenum on the electrochemical performance of electrolytes should be carefully evaluated.…”

Section: Electrochemical Properties Of Electrolytesmentioning

confidence: 99%

Molybdenum-assisted reduction of VO2+ for low cost electrolytes of vanadium redox flow batteries

Hwang¹,

Ha²,

Park³

2021

Preprint

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Efficient and affordable energy storage systems are indispensable to accomplish a successful energy transition from fossil fuels to renewable sources. Although all-vanadium redox flow batteries (VRFB) possess many distinctive advantages, much improvement in the process for electrolyte preparation is needed to overcome low productivity and complexity of the current electrolysis process. Herein, we demonstrate a simple one-pot process for the preparation of V3.5+ electrolytes from V2O5 by utilizing hydrazine monohydrate as a residue-free reducing agent and molybdenum as a homogeneous catalyst accelerating the reduction of VO2+. It is confirmed that the performance of the electrolytes prepared by the newly developed process is identical to that by electrolysis in terms of charge-discharge efficiency and capacity up to current density of 200 mA cm-2. This study can contribute to the wide spread of VRFB by providing a scalable process suitable for the mass production of V3.5+ electrolyte.

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“…The principles are generally less applicable to large-scale vanadium redox flow batteries (VRFBs); performance, durability, and recyclability are complementary, rather than competing, criteria in this application-at least with regard to the vanadium (V) electrolytes. In addition, the larger the scale, the better the capacity for built-in equipment redundancy, isolation, and repairability during operation, all of which further improve recyclability [78,79].…”

Section: Ev Battery Dfr Principlesmentioning

confidence: 99%

Design for Recycling Principles Applicable to Selected Clean Energy Technologies: Crystalline-Silicon Photovoltaic Modules, Electric Vehicle Batteries, and Wind Turbine Blades

Norgren

Carpenter

Heath

2020

J. Sustain. Metall.

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The global growth of clean energy technology deployment will be followed by parallel growth in end-of-life (EOL) products, bringing both challenges and opportunities. Cumulatively, by 2050, estimates project 78 million tonnes of raw materials embodied in the mass of EOL photovoltaic (PV) modules, 12 billion tonnes of wind turbine blades, and by 2030, 11 million tonnes of lithium-ion batteries. Owing partly to concern that the projected growth of these technologies could become constrained by raw material availability, processes for recycling them at EOL continue to be developed. However, none of these technologies are typically designed with recycling in mind, and all of them present challenges to efficient recycling. This article synthesizes and extends design for recycling (DfR) principles based on a review of published industrial and academic best practices as well as consultation with experts in the field. Specific principles developed herein apply to crystalline-silicon PV modules, batteries like those used in electric vehicles, and wind turbine blades, while a set of broader principles applies to all three of these technologies and potentially others. These principles are meant to be useful for stakeholders—such as research and development managers, analysts, and policymakers—in informing and promoting decisions that facilitate DfR and, ultimately, increase recycling rates as a way to enhance the circularity of the clean energy economy. The article also discusses some commercial implications of DfR. Graphical Abstract

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Influence of Metal Impurities or Additives in the Electrolyte of a Vanadium Redox Flow Battery

Cited by 30 publications

References 15 publications

A review of all‐vanadium redox flow battery durability: Degradation mechanisms and mitigation strategies

A review of all‐vanadium redox flow battery durability: Degradation mechanisms and mitigation strategies

Molybdenum-assisted reduction of VO2+ for low cost electrolytes of vanadium redox flow batteries

Design for Recycling Principles Applicable to Selected Clean Energy Technologies: Crystalline-Silicon Photovoltaic Modules, Electric Vehicle Batteries, and Wind Turbine Blades

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