Research progress in preparation of electrolyte for all-vanadium redox flow battery

Guo, Yun; Huang, Jie; Feng, Junkai

doi:10.1016/j.jiec.2022.11.037

Cited by 29 publications

(22 citation statements)

References 42 publications

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“…At present, high efficiency, large capacity, and low cost are still the most important research directions of energy storage technology in the future. 17 For vanadium batteries, vanadium electrolyte is a key material that determines the application and performance of vanadium batteries. On the one hand, the energy cost of VRB is around $360 kWh À1 , which is much higher than the cost of a lithium battery of about $100 kWh À1 .…”

Section: Introductionmentioning

confidence: 99%

Recent research on vanadium redox batteries: A review on electrolyte preparation, mass transfer, and charge transfer for electrolyte performance enhancement

Ye,

Zhang,

Zhou

et al. 2024

Energy Storage

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Vanadium electrolyte is one of the most critical materials for vanadium redox batteries (VRB). Reducing the cost of vanadium electrolyte and improving its performance are ongoing research priorities for VRB. Currently, the control of the cost of vanadium electrolyte mainly relies on the development of new processes and optimization of traditional processes. Improving the performance of electrolytes mainly involves two aspects: mass transfer and charge transfer, such as introducing additives, optimizing supporting electrolytes, and developing new electrode catalysts. This article reviews the progress in improving the performance of VRB in the past 10 years. It focuses on three main aspects: the preparation of electrolytes, the influence of mass transfer on battery performance, and the influence of charge transfer on battery performance. It also further discusses the impact of different factors on the improvement of VRB performance. Finally, it summarizes the challenges faced by VRB in performance improvement and commercial applications, and made suggestions for future research and development of VRB.

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Section: Introductionmentioning

confidence: 99%

Recent research on vanadium redox batteries: A review on electrolyte preparation, mass transfer, and charge transfer for electrolyte performance enhancement

Ye,

Zhang,

Zhou

et al. 2024

Energy Storage

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“…Energy storage systems can be classified as mechanical, thermal, electrochemical, electrical, and chemical. , Recent studies have been focused on electrochemical energy storage systems that have increased in number and size. Among these electrochemical storage systems, especially redox flow batteries (RFBs) have attracted the most attention because of their long duration, scalability, and nonflammability. − RFBs can be made using a variety of redox couples including vanadium-vanadium, vanadium-bromine, vanadium-oxygen, vanadium-cerium, vanadium-polyhalite, bromine-polysulfide, zinc-bromine, zinc-cerium, zinc-iron, iron-chromium, magnesium-vanadium, and hydrogen-bromine. − Among these, the all-vanadium chemistry used in a vanadium redox flow battery (VRFB) is by far the most advanced option due to its good properties such as high energy efficiency, high power density, wide operating temperature range, low capital cost, low toxicity, and long life cycle. − A VRFB consists of a current collector, electrode, electrolytes (VO 2+ /VO 2 + and V 2+ /V 3+ sulfate solution for positive and negative electrolytes, respectively), membrane, gasket, electrolytic tank, and peristaltic pump. − During the charge and discharge processes, vanadium species undergo chemical reactions via reversible redox reactions. Since these reactions occur at the electrode–electrolyte interface, the energy efficiency of a VRFB mainly depends on the electrodes.…”

Section: Introductionmentioning

confidence: 99%

Review on the Applications of Biomass-Derived Carbon Materials in Vanadium Redox Flow Batteries

Doǧan,

Taş,

Meşeli

et al. 2023

ACS Omega

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The development of vanadium redox flow batteries (VRFBs) requires the exploration of effective and affordable electrodes. In order to increase the electrochemical activity of these electrodes and decrease the polarizations, they are doped with an electrocatalyst. In this context, the use of biomass-derived materials as electrocatalysts in VRFBs has received much attention recently due to their widespread availability, renewable nature, low cost, and high energy efficiency. This paper aims to review the synthesis methods of biomass-derived carbon materials and their applications in VRFBs. In line with this aim, recent developments in carbon-based electrode modification methods and their electrochemical performance in VRFBs are summarized. The studies show that porous carbon electrocatalysts increase energy efficiency by reducing overpotentials and improving electrocatalytic activation. In addition, it is thought that biomass carbon doped electrocatalysts can improve the hydrophilicity of the electrodes, the transfer of vanadium ions, and the reaction kinetics. The highest charge voltage decrease rate of 8.61% was obtained in the Scaphium scaphigerum, whereas the highest discharge voltage increase rate of 14.29% was observed in the twin cocoon, as in all reviewed studies. Furthermore, the maximum energy efficiency (75%) was achieved in a VRFB equipped with an electrode doped with carbon derived from Scaphium scaphigerum and cuttlefish. It can be concluded from the reviewed studies that the electrochemical performances of electrodes doped with biomass-derived carbons in VRFBs are more effective than those of the bare electrodes.

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“…Due to their large capacity, long lifespan, and high security, vanadium redox flow batteries (VRFBs) are in widespread use for energy storage [1][2][3][4][5][6]. As the energetic material for energy storage and the heart of energy conversion, the vanadium electrolyte has a crucial impact on the characteristics and efficiency of VRFBs [7,8]. Generally, the action of impurity ions is one of the major causes of electrolyte performance degradation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Removal of Fe Impurity Ions from a Spent Vanadium Electrolyte Using Capacitive Deionization Based on Resin/Activated Carbon Composite Electrodes

et al. 2023

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Capacitive deionization (CDI) based on LSC-957 resin/carbon composite electrodes was used to remove Fe impurity ions from a spent vanadium electrolyte, which enabled simple and efficient regeneration of the electrolyte. The experiments conducted in this study demonstrated that 3:1 was the optimal mass ratio of LSC-957 resin to activated carbon for the preparation of the composite electrodes, and the optimal operating voltage and operating time were 0.9 V and 6 h, respectively. After five stages of CDI tandem treatment, the adsorption rate of Fe impurity ions was 86.84% and the loss rate of V was only 3.8%. The energy efficiency of the regenerated electrolyte was 84.49%, and its performance was significantly improved compared to the spent vanadium electrolyte. The adsorption process of composite electrodes was analyzed by kinetic and isothermal models’ fit, SEM-EDS, and FTIR. This work has provided an effective and novel method for removing impurity ions from a spent electrolyte.

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Research progress in preparation of electrolyte for all-vanadium redox flow battery

Cited by 29 publications

References 42 publications

Recent research on vanadium redox batteries: A review on electrolyte preparation, mass transfer, and charge transfer for electrolyte performance enhancement

Recent research on vanadium redox batteries: A review on electrolyte preparation, mass transfer, and charge transfer for electrolyte performance enhancement

Review on the Applications of Biomass-Derived Carbon Materials in Vanadium Redox Flow Batteries

Removal of Fe Impurity Ions from a Spent Vanadium Electrolyte Using Capacitive Deionization Based on Resin/Activated Carbon Composite Electrodes

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