Recent development and prospect of membranes for alkaline zinc-iron flow battery

Zhi, Liping; Yuan, Zhizhang; Li, Xianfeng

doi:10.1016/j.advmem.2022.100029

Cited by 10 publications

(10 citation statements)

References 110 publications

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“…The widely investigated ZFBs include zinc− bromine (Zn−Br), zinc−iron (Zn−Fe, neutral or alkaline), zinc−iodine (Zn−I) and other systems, which are also the research emphasis of our group. The ICMs for ZFBs should meet the following additional requirements: 54 (i) Prevent the diffusion of bromine (ii) Resist the piecing of zinc dendrites (iii) Inhibit water migration (iv) Avoid membrane fouling The modification strategies for ICMs in ZFBs are somehow similar to those of in VFBs. Compared with IEMs, porous ICMs exhibit higher conductivity in alkaline and neutral ZFBs.…”

Section: Icms For Zfbsmentioning

confidence: 99%

“…The widely investigated ZFBs include zinc–bromine (Zn–Br), zinc–iron (Zn–Fe, neutral or alkaline), zinc–iodine (Zn–I) and other systems, which are also the research emphasis of our group. The ICMs for ZFBs should meet the following additional requirements: Prevent the diffusion of bromine Resist the piecing of zinc dendrites Inhibit water migration Avoid membrane fouling …”

Section: Icms For Zfbsmentioning

confidence: 99%

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Advanced Membranes Boost the Industrialization of Flow Battery

Lü

2023

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Flow battery (FB) is nowadays one of the most suited energy storage technologies for large-scale stationary energy storage, which plays a vital role in accelerating the wide deployment of renewable energies. FBs achieve the energy conversion by reversible redox reactions of flowing active species at the positive and negative sides. An ion conducting membrane (ICM) is necessary to separate the anolyte and catholyte, while conducting chargebalanced ions to form a complete electric circuit simultaneously. However, the commonly used commercial perfluorinated sulfonated ion exchange membranes suffer from low selectivity and high cost. The widely studied nonfluorinated ion exchange membranes have poor chemical stability. Most importantly, these membranes are confronted with a trade-off between selectivity and conductivity. That has motivated researchers to explore novel membrane materials with innovative design. Among them, porous membranes based on the "ion sieving conducting" mechanism instead of the "ion exchange conducting" mechanism from traditional ion exchange membranes were put forward, upon which very impressive progress has been achieved in recent years. Different from ion exchange membranes, the porous ICMs can separate active species from charge-balanced ions by pore size exclusion. As a result, by controlling the pore structures, porous membranes can break up the selectivity and conductivity trade-off. However, the initial performance of the first reported porous ICM is not high enough to afford the industrialization of FBs. As a group striving for the integration of basic, applied and translational research, we have devoted substantial efforts to optimizing the current membrane fabrication methods, developing novel fabrication techniques, exploring novel membrane materials and increasing the membrane performance for over a decade. Based on these efforts, the preliminary industrial applications of ICMs in FBs have been realized. In this Account, we summarize and discuss the development process of ICMs in various FB systems, mainly including vanadium FBs and zinc-based FBs. We begin the discussion from the brief description of FBs and their ICMs. Then we will illustrate the "ion sieving conducting" mechanism of ICMs deeply and elaborately. This account will focus on our contributions to accelerating the industrial applications of ICMs in FB energy storage systems, upon which the modification strategies on ICMs will be illustrated thoroughly, including the regulation of formation parameters, the introduction of functional materials or functional separation layers and the implementation of post-treatment steps. We also discuss the current challenges of ICMs and propose prospects on their future development.

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Section: Icms For Zfbsmentioning

confidence: 99%

Section: Icms For Zfbsmentioning

confidence: 99%

Advanced Membranes Boost the Industrialization of Flow Battery

Lü

2023

Acc. Mater. Res.

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“…This in turn results in a heterogeneous plating of the zincate ion on the electrode and makes the formation of dendritic zinc easy on the electrode. 20 The formed dendritic zinc can pierce into the membrane and further lead to a short circuit of the battery, making the reliability of the alkaline zinc−iron flow battery limited. This issue is more severe at higher operating current density, which limits the battery's power density.…”

Section: −mentioning

confidence: 99%

“…In this process, the electrochemical reaction rate of active material on the electrode is much faster than the diffusion rate of active material from bulk solution to the electrode’s surface, which can easily lead to concentration polarization on the electrode and further enable the plating of Zn(OH) 4 2– in a direction opposite its diffusion path. This in turn results in a heterogeneous plating of the zincate ion on the electrode and makes the formation of dendritic zinc easy on the electrode . The formed dendritic zinc can pierce into the membrane and further lead to a short circuit of the battery, making the reliability of the alkaline zinc–iron flow battery limited.…”

Section: Introductionmentioning

confidence: 99%

Montmorillonite-Based Separator Enables a Long-Life Alkaline Zinc–Iron Flow Battery

Chen

Kang

Shang

et al. 2022

Ind. Eng. Chem. Res.

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Alkaline zinc−iron flow batteries (AZIFBs) demonstrate great potential in the field of stationary energy storage. However, the reliability of alkaline zinc−iron flow batteries is limited by dendritic zinc and zinc accumulation, which has been treated as one of the most critical issues for the practical application of alkaline zinc−iron flow batteries. Herein, montmorillonite (MMT) with high mechanical stability and negatively charged property is introduced on the surface of a porous poly(ether sulfone) substrate, which enables an efficient and highly stable alkaline zinc−iron flow battery. The high mechanical strength of MMT can avoid damaging from metallic zinc, while its negatively charged property can effectively equilibrate the distribution of zincate ions at the interface between the membrane and the electrode. The synergistic effects of charge property and mechanical strength enabled by the montmorillonite flake layer can in turn effectively adjust the deposited zinc from "honeycomb-like" to "stick-like" morphology, thus affording the battery with a stable performance for 500 cycles at a current density of 140 mA cm −2 , maintaining an energy efficiency of ∼80%. The results of this study are important for the regulation of zinc deposition morphology and the improvement of the operational reliability of zinc-based flow batteries.

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“…Therefore, the Zn/Cl 2 batteries’ energy capacity is limited by the amount of zinc material, which is decomposition on the negative electrode 114,116 . Zhi et al 118 provided a comprehensive overview of the application, principal methods of structural design, and polymer design of alkaline zinc‐iron flow battery systems. In addition to zinc‐based flow batteries, alkaline zinc‐iron flow battery systems have the potential to enable widespread usage of renewable energies through energy storage.…”

Section: Energy Storage Technologiesmentioning

confidence: 99%

A comprehensive state‐of‐the‐art review of electrochemical battery storage systems for power grids

Solyalı

Safaei

Zargar

et al. 2022

Intl J of Energy Research

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Summary As the world's population and living standards rise, energy suppliers will face increased electrical energy needs. Furthermore, the European Commission has established a goal to reduce fossil fuel use and greenhouse gas emissions in accordance with the Kyoto and Paris Protocols. As a result, governments are more likely to integrate renewable energy into their electricity grids. However, since renewable energy resources are intermittent, power grid systems confront considerable hurdles. By overcoming the intermittency of renewable energy resources, battery storage systems are one way to optimize load and demand. Many studies show that the stored energy can be used in high demand. This may reduce the cost of production in the long run. Energy storage systems can also provide voltage and frequency regulation to power systems when connected to the transmission and/or distribution lines. The application and benefits of battery storage devices in electricity grids are discussed in this study. The pros and disadvantages of various electrochemical batteries, including their structure, energy capacity, and application areas, are compared and summarized and their benefits and drawbacks are included. Finally, the research demonstrates how electrochemical battery technologies and power grids have collaborated.

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Recent development and prospect of membranes for alkaline zinc-iron flow battery

Cited by 10 publications

References 110 publications

Advanced Membranes Boost the Industrialization of Flow Battery

Advanced Membranes Boost the Industrialization of Flow Battery

Montmorillonite-Based Separator Enables a Long-Life Alkaline Zinc–Iron Flow Battery

A comprehensive state‐of‐the‐art review of electrochemical battery storage systems for power grids

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