A low-cost SPEEK-K type membrane for neutral aqueous zinc-iron redox flow battery

Chang, Shunli; Ye, Jiaye; Zhou, Wei; Wu, Chun; Ding, Mei; Long, Yong; Cheng, Yuanhang; Jia, Chuankun

doi:10.1016/j.surfcoat.2018.11.028

Cited by 56 publications

(34 citation statements)

References 34 publications

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Section: Advanced Materials For Zinc‐based Flow Batteriesmentioning

confidence: 99%

“…To further verify the application of cation exchange membranes in the neutral zinc–iron flow battery, Cheng et al reported a low‐cost K + ‐formed sulfonated poly(ether ether ketone) (SPEEK‐K) membrane (Figure j) . The battery with the SPEEK‐K membrane shows a CE of over 95% and an EE of over 78% at a current density of 40 mA cm −2 , demonstrating a slightly better performance than that of the battery with a Nafion 117 membrane.…”

Section: Advanced Materials For Zinc‐based Flow Batteriesmentioning

confidence: 99%

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Advanced Materials for Zinc‐Based Flow Battery: Development and Challenge

et al. 2019

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stability and efficiency of the electric grid to portable electronic devices as well as supplying backup power in districts with limited grid connectivity or in off-grid applications, [4][5][6][7] are an effective approach to address these issues.Among the numerous electrochemical energy storage techniques, flow batteries (FBs) are well suited for energy storage because of their perfect combination of high safety, high efficiency and flexibility. [8][9][10] A flow battery realizes the transformation of chemical energy into electric energy through the oxidation and reduction reactions of redox couples stored in electrolytes that typically circulate through the anode and cathode, which are normally separated by an ionconducting membrane. [11] Compared with other battery systems such as lithium-based batteries and lead-based batteries, the power of a flow battery is determined by the size and number of cell stacks, while the energy or capacity of the battery depends on the concentration and the volume of the redox couples in the electrolytes. [12] Hence, the power and energy or capacity of a flow battery can be designed independently, [13] allowing the power of a flow battery to range from the 100 kW to the 100 MW level and the energy of a flow battery to range from the 100 kWh to the 100 MWh level. [14] Normally, the electrolyte of a flow battery consists of an aqueous solution, which endows the technology with high safety and minimal potential risk of fire or explosion. These advantages of flow battery technologies make such devices very suitable for energy storage applications.As a representative flow battery technology, the vanadium flow battery (VFB) has long been considered as one of the most mature technologies and is currently at the commercial demonstration stage. [8,15] However, some limitations and challenges, e.g., the relatively high cost [16] and low energy density, still need to be overcome to realize its industrialization. Recently, tremendous efforts have been devoted to exploring and developing novel flow battery technologies with low costs and high energy densities, e.g., zinc-based flow batteries (ZFBs), [17][18][19][20][21] polymer-based flow batteries, [22][23][24] and quinone-based flow batteries. [25][26][27][28] These newly developed flow battery technologies have demonstrated promise for energy storage applications, although most are still in development in the lab.Zinc-based flow batteries (ZFBs) are well suitable for stationary energy storage applications because of their high energy density and low-cost advantages. Nevertheless, their wide application is still confronted with challenges, which are mainly from advanced materials. Therefore, research on advanced materials for ZFBs in terms of electrodes, membranes, and electrolytes as well as their chemistries are of the utmost importance. Herein, the focus is on the scientific understandings of the fundamental design of these advanced materials and their chemistries in relation to the battery performance. The principles of using different...

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Section: Advanced Materials For Zinc‐based Flow Batteriesmentioning

confidence: 99%

Section: Advanced Materials For Zinc‐based Flow Batteriesmentioning

confidence: 99%

Advanced Materials for Zinc‐Based Flow Battery: Development and Challenge

et al. 2019

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“…An RFB is a reversible ESS which realizes the conversion between electrical energy and chemical energy through the corresponding redox reactions of the active species during the charge-discharge process. [10][11][12][13] The ion conduction provided by the PEM is a critical element of RFB, as it mainly determines the capacity decay, efficiency, lifetime, and the expense of the whole RFB system. 5,6 The catholyte and anolyte of RFB are composed of dissolved electro-active species, which are circulated during the operation between the external storage tank and the electrochemical cell.…”

Section: Introductionmentioning

confidence: 99%

“…9 In the core of the RFB electrochemical cell is typically a proton-conducting membrane (PEM) or separator between two carbon electrodes, which not only physically separates the cathode and anode electrolytes, but also enables the proton transport in order to complete the circuit accompanied with the electron transfer during the passage of current. [10][11][12][13] The ion conduction provided by the PEM is a critical element of RFB, as it mainly determines the capacity decay, efficiency, lifetime, and the expense of the whole RFB system. Consequently, the RFB performance is directly correlated to the structural properties of PEM.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Nafion series membranes on the performance of iron‐chromium redox flow battery

Sun

Zhang

2019

Int J Energy Res

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Summary To boost the performance of the iron‐chromium redox flow battery (ICRFB), opting an appropriate proton exchange membrane (PEM) as the core component of ICRFB is of great importance. For the purpose, in this paper, various widely adopted commercial Nafion membranes with a different thickness of 50 μm (Nafion 212, N212), 126 μm (N115), and 178 μm (N117) are chosen for the sake of evaluating the influence of membrane thickness on the ICRFB single‐cell performance. Physicochemical properties, electrolyte utilization, cell efficiency, long‐term cycling stability, and the self‐discharge process of ICRFBs based on a series of Nafion membranes are contrasted comprehensively. The cycling test of ICRFBs is carried out under the current density range of 40 to 120 mA/cm2 for the charge‐discharge process. As a result of the good equilibrium of membrane resistance and electro‐active species permeability, Nafion 212 membrane exhibits the highest electrolyte utilization and energy efficiency during the operation, accompanied by the lowest overpotential. In the final part, the selection of Nafion membrane thickness was optimized on the basis of single‐cell performance and the overall cost of the system.

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“…x (Park et al, 2017;Ding et al, 2018;Luo et al, 2019) have been proposed and investigated. Along with advances in electrodes and the ionexchange membrane, improvements in RFB cell performance have also been achieved to some extent (Ye et al, 2018(Ye et al, , 2019a(Ye et al, ,b, 2020Chang et al, 2019;Lou et al, 2019;Xia et al, 2019). However, these systems are still facing technological challenges, such as the high viscosity of a strong sulfuric acid supporting electrolyte, dendritic deposition of zinc, the strong corrosivity of halogen, high cost, and so on, hindering practical application.…”

Section: Redox Flow Batteriesmentioning

confidence: 99%

Organic Electroactive Molecule-Based Electrolytes for Redox Flow Batteries: Status and Challenges of Molecular Design

et al. 2020

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This is a critical review of the advances in the molecular design of organic electroactive molecules, which are the key components for redox flow batteries (RFBs). As a large-scale energy storage system with great potential, the redox flow battery has been attracting increasing attention in the last few decades. The redox molecules, which bridge the interconversion between chemical energy and electric energy for RFBs, have generated wide interest in many fields such as energy storage, functional materials, and synthetic chemistry. The most widely used electroactive molecules are inorganic metal ions, most of which are scarce and expensive, hindering the broad deployment of RFBs. Thus, there is an urgent motivation to exploit novel cost-effective electroactive molecules for the commercialization of RFBs. RFBs based on organic electroactive molecules such as quinones and nitroxide radical derivatives have been studied and have been a hot topic of research due to their inherent merits in the last decade. However, few comprehensive summaries regarding the molecular design of organic electroactive molecules have been published. Herein, the latest progress and challenges of organic electroactive molecules in both non-aqueous and aqueous RFBs are reviewed, and future perspectives are put forward for further developments of RFBs as well as other electrochemical energy storage systems.

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A low-cost SPEEK-K type membrane for neutral aqueous zinc-iron redox flow battery

Cited by 56 publications

References 34 publications

Advanced Materials for Zinc‐Based Flow Battery: Development and Challenge

Advanced Materials for Zinc‐Based Flow Battery: Development and Challenge

Investigation of Nafion series membranes on the performance of iron‐chromium redox flow battery

Organic Electroactive Molecule-Based Electrolytes for Redox Flow Batteries: Status and Challenges of Molecular Design

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