A Critical Update on the Design of Dense Ion‐Conducting Membranes for Redox Flow Batteries DOI

Francesca Niccolai,

Elisa Guazzelli,

Zakaria El Koura

et al.

Advanced Sustainable Systems, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Recent progress in the design and preparation of dense ion‐conducting membranes, to improve redox flow batteries (RFBs) performance are critically examined. The ideal membrane has balance a high ionic conductivity, low crossover ion/redox‐active species, coulombic voltage efficiencies. Several ion exchange membranes analyzed, with focus on proton (PEMs), that most mature technology RFBs, led by gold standard Nafion. Key developments include synthesis tailored (co)polymers, post‐functionalization commercially available ones, formation techniques like electrospinning, polymer blending, additions organic inorganic fillers, surface modification. Dense, asymmetric composite reported discussed. effects properties macromolecular parameters (polymer backbone, type length side chains, acidity ion‐exchanging group) highlighted. Correlations between chemical structure, discussed, targeting trade‐off selectivity overall RFB cell. Although significant steps forward development were made, improvements electrochemical long‐term stability, while reducing costs, still challenging necessary large‐scale application RFBs.

Language: Английский

Advanced Materials for Vanadium Redox Flow Batteries: Major Obstacles and Optimization Strategies DOI
Jinqing Du,

Huitong Lin,

Longyan Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Electrochemical energy storage (EES) demonstrates significant potential for large‐scale applications in renewable storage. Among these systems, vanadium redox flow batteries (VRFB) have garnered considerable attention due to their promising prospects widespread utilization. The performance and economic viability of VRFB largely depend on critical components, including membranes, electrodes, electrolytes. However, as the fundamental materials ion conduction, often struggle effectively balance proton transfer while preventing crossover, enhancing long‐term stability, reducing manufacturing costs. Additionally, inherent structural limitations surface property defects electrode significantly impact improvement V 2+ /V 3+ electrochemical reaction kinetics enhancement power density. Furthermore, composition concentration electrolyte play a crucial role determining cost VRFB, well its density cycling performance. This review analyzes summarizes each component, reviews evaluates latest research advancements material modification, optimization, processes components over past 5 years. Moreover, comprehensive assessment environmental sustainability, feasibility, is presented, aiming provide strategic guidance commercialization VRFB.

Language: Английский

Citations

2
Nanometrically Confined Water Molecules in 2D Polyoxometalate-Based Metal–Organic Frameworks Enhancing Proton Conductivity DOI

Yuming Cui,

Bao-Yue Zhang,

Jing Sun

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1454 - 1461

Published: March 20, 2025

Language: Английский

Citations

0
A Critical Update on the Design of Dense Ion‐Conducting Membranes for Redox Flow Batteries DOI

Francesca Niccolai,

Elisa Guazzelli,

Zakaria El Koura

et al.

Advanced Sustainable Systems, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Recent progress in the design and preparation of dense ion‐conducting membranes, to improve redox flow batteries (RFBs) performance are critically examined. The ideal membrane has balance a high ionic conductivity, low crossover ion/redox‐active species, coulombic voltage efficiencies. Several ion exchange membranes analyzed, with focus on proton (PEMs), that most mature technology RFBs, led by gold standard Nafion. Key developments include synthesis tailored (co)polymers, post‐functionalization commercially available ones, formation techniques like electrospinning, polymer blending, additions organic inorganic fillers, surface modification. Dense, asymmetric composite reported discussed. effects properties macromolecular parameters (polymer backbone, type length side chains, acidity ion‐exchanging group) highlighted. Correlations between chemical structure, discussed, targeting trade‐off selectivity overall RFB cell. Although significant steps forward development were made, improvements electrochemical long‐term stability, while reducing costs, still challenging necessary large‐scale application RFBs.

Language: Английский

Citations

1