Redox flow battery:Flow field design based on bionic mechanism with different obstructions

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155663 - 155663

Published: Sept. 1, 2024

Language: Английский

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Hybrid nanophotonic-microfluidic sensor integrated with machine learning for operando state-of-charge monitoring in vanadium flow batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 111, P. 115349 - 115349

Published: Jan. 18, 2025

Language: Английский

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A correlated multi-observable assessment for vanadium redox flow battery state of charge estimation – Long-term stability of methods

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 145707 - 145707

Published: Jan. 1, 2025

Language: Английский

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The Modeling Study of Ion Crossover in All-Vanadium Redox Flow Batteries

Modeling and Simulation, Journal Year: 2025, Volume and Issue: 14(03), P. 369 - 378

Published: Jan. 1, 2025

Language: Английский

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Carbon felt coated with tungsten–bismuth-based oxides as highly active and selective negative electrodes for high power density all-vanadium redox flow batteries

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

To develop the VRFB negative electrode, W–Bi-based oxides were solvothermally synthesized on carbon felt (W–Bi@CF). The W–Bi 2 @CF electrode showed superior catalytic activity, selectivity, and stability, with great potential for employment in VRFBs.

Language: Английский

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Evaluation of the effect of hydrogen evolution reaction on the performance of all-vanadium redox flow batteries

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 504, P. 144895 - 144895

Published: Aug. 13, 2024

Language: Английский

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Design and experimental validation of an optimal remixing procedure for vanadium flow batteries affected by faradaic imbalance

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 624, P. 235487 - 235487

Published: Sept. 26, 2024

Language: Английский

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Effect of Operating Conditions on the Capacity of Vanadium Redox Flow Batteries

Journal of The Electrochemical Society, Journal Year: 2024, Volume and Issue: 171(6), P. 060503 - 060503

Published: May 28, 2024

Vanadium redox flow batteries (VRFBs) present a viable solution to address the intermittent power output challenge associated with wind and solar energy generation. However, their development is impeded by low density high cost. To achieve objective of cost reduction, it crucial optimize operating conditions, minimize capacity loss, enhance battery performance. Through meticulous experimental analysis, this study thoroughly examines impact membrane thickness, current density, rate, self-discharge on capacity. The findings reveal that an increase in thickness results elevated resistance proton transport, thereby weakening electrochemical reactions. Moreover, surpassing critical values for rate also leads decrease Prolonged shelving induces severe reactions accelerate deterioration fade. This research suggests obtaining optimal operational parameters can effectively mitigate

Language: Английский

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Sensitivity of Capacity Fade in Vanadium Redox Flow Battery to Electrolyte Impurity Content

ChemPlusChem, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Abstract The gradual capacity decrease of vanadium redox flow battery (VRFB) over long‐term charge‐discharge cycling is determined by electrolyte degradation. While it was initially believed that this degradation solely caused crossover, recent research suggests oxidative imbalance induced hydrogen evolution reaction (HER) also plays a significant role. In work using pentoxides with different impurities content, we prepared three grades electrolyte. By measuring electrochemical properties on carbon felt electrode in three‐electrode cell and VRFB membrane‐electrode assembly evaluate the influence impurity content polarization rate side reactions which indicated increase average oxidation state ( AOS ) during tests varies from 0.061 to 0.027 day −1 for electrolytes made 99.1 99.9 wt % V 2 O 5 . We found correlates open‐circuit voltage discharged ranging 9.6 14.9 mV highest lowest purity levels, respectively. significant, does not determine fade. It demonstrated presence crossover decreases fade, i. e. levels contribution drop.

Language: Английский

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Pyridine-Containing Polyhydroxyalkylation-Based Polymers for Use in Vanadium Redox Flow Batteries

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Language: Английский

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