A high power density and long cycle life vanadium redox flow battery

Jiang, Haoran; Sun, Jing; Wei, Lei; Wu, Maochun; Shyy, Wei; Zhao, Tianshou

doi:10.1016/j.ensm.2019.07.005

Cited by 234 publications

(151 citation statements)

References 46 publications

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“…However, the total pressure drop for the flow‐through configuration is higher than for other flow fields and the flow velocity relative to the electrode is higher for interdigitated flow field. This conclusion is consistent with the previously reported simulation results . Figure shows that velocity at the center of electrode is different in all three cases as well as flow velocity distribution over the length and width of the porous electrode (Figure S3 in the Supporting Information).…”

Section: Introductionsupporting

confidence: 92%

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Electrolyte Flow Field Variation: A Cell for Testing and Optimization of Membrane Electrode Assembly for Vanadium Redox Flow Batteries

et al. 2020

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A great deal of research has been dedicated to improving the performance of vanadium redox flow battery (VRFB). In this work, we propose the design of a cell for testing membrane electrode assembly of VRFB, which enables the optimization of the flow field, conditions of charge‐discharge tests, and the nature of components (electrodes, membrane) with minimal time and material expenses. The essence of the proposed cell is that the system of channels distributing the electrolyte is made by cutting shaped holes in the sheets of graphite foil (GF). This manner allows easy modification of the flow field configurations. Polarization curves for serpentine, interdigitated, and flow‐through systems were measured according to procedures used in such studies. Cell with GF plates being tested with vanadium‐sulfuric acid electrolyte, outperforms the cell with conventional graphite plates with the same parameters of the flow field. It demonstrates 734 mW cm−2 of peak power density at SOC 50 and 84.3 % of energy efficiency at 84.5 % of electrolyte utilization under galvanostatic charge/discharge cycling with 75 mA cm−2.

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Section: Introductionsupporting

confidence: 92%

“…Serpentine flow field is inferior to both of them. Similar conclusions were made in the previously reported papers . Overall, it can be concluded that flow field simulations predict different hydrodynamic conditions for each type of flow field.…”

Section: Introductionsupporting

confidence: 90%

Electrolyte Flow Field Variation: A Cell for Testing and Optimization of Membrane Electrode Assembly for Vanadium Redox Flow Batteries

et al. 2020

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“…Heng et al [226] fabricated a supercapattery device based on reduced graphene oxide/titanium dioxide (rGO/TiO 2 ) anode obtained a good energy density of 54.37 Wh kg −1 and a power density of 420.8 W kg −1 along with 92% capacity retention after 300 cycles. Peng et al [227] reported a supercapattery with 3D flowerlike nickel phosphate (N-90) positive electrode showed a energy density of 25 The morphology of as-prepared electrode material regulates the electrochemical performance of the device to a greater extent. Han et al [237] fabricated a high-performance asymmetric supercapacitor utilizing NiCo 2 S 4 /Co 9 S 8 hollow spheres as a positive and activated carbon (AC) as a negative electrode, which achieved a very high energy density of 96.5 Wh kg −1 at a power density of 0.8 kW kg −1 as shown in Fig.…”

Section: Advancement In Supercapattery Researchmentioning

confidence: 99%

“…To meet out the demand for high energy and power density of electrochemical energy storage devices, the material development plays a dramatic role [13,14]. Comprehensively, various EES devices are available; however, batteries [15][16][17][18] and supercapacitors [19][20][21] are considered as two main classes of EES devices due to their high energy and power densities [12,[22][23][24][25][26]. In the view of safety and life cycle, supercapacitors headed over the batteries [27,28], but they are backward in the energy density [29].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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HIGHLIGHTS• This article reviewed the recent progress on material challenges, charge storage mechanism, and electrochemical performance evaluation of supercapatteries.• Supercapatteries bridge the gap between supercapacitors (low energy density) and batteries (low power density). Fig. 1 a Ragone plot of various electrochemical energy conversion and storage devices [43]. b Schematic illustration of charge storage mechanism of EDL capacitor in porous carbon electrode. c Representation of EDLC structures: Helmholtz model, Gouy-Chapman model and Gouy-Chapman-Stern model. Schematic representation of the charge storage mechanisms in pseudocapacitor; d Intercalation (bulk redox) and e surface redox Nano-Micro Lett.(2020) 12:85Page 5 of 46 85 Table 1 Classification of various energy storage devices according to their charge storage mechanisms NFCS non-Faradaic capacitive storage = EDLC storage, CFS capacitive Faradaic storage = pseudocapacitive storage, NCFS non-capacitive Faradaic storage = battery-type storage Device Supercapattery Battery Supercapacitor Hybrid supercapacitor EDLC Pseudocapacitors

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“…Finally, studies in the electrode porosity and permeability reveal connections to the peak power [25], accessible energy density [26], energy efficiency [26][27][28][29], and fluid dynamics [30]. In whole, electrode modifications continue to be a targeted research area to improve the overall VRFB electrochemical performance [22,27,[31][32][33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Data-driven electrode parameter identification for vanadium redox flow batteries through experimental and numerical methods

et al. 2020

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The vanadium redox flow battery (VRFB) is a promising energy storage technology for stationary applications (e.g., renewables integration) that offers a pathway to cost-effectiveness through independent scaling of power and energy as well as longevity. Many current research efforts are focused on improving battery performance through electrode modifications, but high-throughput, laboratory-scale testing can be time-and material-intensive. Advances in multiphysics-based numerical modeling and data-driven parameter identification afford a computational platform to expand the design space by rapidly screening a diverse array of electrode configurations. Herein, a 3D VRFB model is first developed and validated against experimental results. Subsequently, a new 2D model is composed, yielding a computationally-light simulation framework, which is used to span bounded values of the electrode thickness, porosity, volumetric area, fiber diameter, and kinetic rate constant across six cell polarization voltages. This generates a dataset of 7350 electrode property combinations for each cell voltage, which is used to evaluate the effect of these structural properties on the pressure drop and current density. These structure-performance relationships are further quantified using Kendall τ rank correlation coefficients to highlight the dependence of cell performance on bulk electrode morphology and to identify improved property sets. This statistical framework may serve as a general guideline for parameter identification for more advanced electrode designs and redox flow battery (RFB) stacks.

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A high power density and long cycle life vanadium redox flow battery

Cited by 234 publications

References 46 publications

Electrolyte Flow Field Variation: A Cell for Testing and Optimization of Membrane Electrode Assembly for Vanadium Redox Flow Batteries

Electrolyte Flow Field Variation: A Cell for Testing and Optimization of Membrane Electrode Assembly for Vanadium Redox Flow Batteries

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Data-driven electrode parameter identification for vanadium redox flow batteries through experimental and numerical methods

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