From ionic clusters dynamics to network constraints in ionic polymer solutions DOI
Sidath Wijesinghe, Chathurika Kosgallana, Manjula Senanayake

et al.

Physical review. E, Journal Year: 2024, Volume and Issue: 109(3)

Published: March 29, 2024

Physical networks formed by ionizable polymers with ionic clusters as crosslinks are controlled coupled dynamics that transcend from through chain motion to macroscopic response. Here, the dynamics, across length scales, in toluene swollen polystyrene sulfonate networks, were directly correlated, electrostatic environment of physical was altered. The multiscale insight is attained coupling neutron spin echo measurements molecular simulations, carried out times typical relaxation solutions. experimental dynamic structure factor outstanding agreement one calculated computer perturbed elevating temperature and changing environment. In toluene, long-lived remain stable over hundreds ns a broad range, while polymer network remains dynamic. Though size changes dielectric constant solvent modified addition ethanol, they but morph, enhancing dynamics.

Language: Английский

Multiscale Understanding of Anion Exchange Membrane Fuel Cells: Mechanisms, Electrocatalysts, Polymers, and Cell Management DOI Creative Commons
Huiyu Lei, Xiaohua Yang, Zhangsen Chen

et al.

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

Published: Jan. 10, 2025

Abstract Anion exchange membrane fuel cells (AEMFCs) are among the most promising sustainable electrochemical technologies to help solve energy challenges. Compared proton (PEMFCs), AEMFCs offer a broader choice of catalyst materials and less corrosive operating environment for bipolar plates membrane. This can lead potentially lower costs longer operational life than PEMFCs. These significant advantages have made highly competitive in future cell market, particularly after advancements developing non‐platinum‐group‐metal anode electrocatalysts, anion membranes ionomers, understanding relationships between conditions mass transport AEMFCs. review aims compile recent literature provide comprehensive three key areas: i) mechanisms hydrogen oxidation reaction (HOR) oxygen reduction (ORR) alkaline media; ii) synthesis routes structure‐property cutting‐edge HOR ORR as well ionomers; iii) conditions, including water management impact CO 2 . Finally, based on these aspects, development perspectives proposed.

Language: Английский

Citations

7
High‐Performance Anion Exchange Membrane Water Electrolyzers Enabled by Highly Gas Permeable and Dimensionally Stable Anion Exchange Ionomers DOI
Fanghua Liu, Kenji Miyatake,

Masako Tanabe

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(29)

Published: June 3, 2024

Abstract Designing suitable anion exchange ionomers is critical to improving the performance and in situ durability of membrane water electrolyzers (AEMWEs) as one promising devices for producing green hydrogen. Herein, highly gas‐permeable dimensionally stable (QC6xBA QC6xPA) are developed, which bulky cyclohexyl (C6) groups introduced into polymer backbones. QC6 50 BA‐2.1 containing mol% C6 composition shows 16.6 times higher H 2 permeability 22.3 O than that 0 without groups. Through‐plane swelling decreases 12.5% from 31.1% (QC6 BA‐2.1) while OH − conductivity slightly (64.9 56.2 mS cm −1 BA‐2.1, respectively, at 30 °C). The electrolysis cell using gas permeable ionomer Ni 0.8 Co 0.2 anode catalyst layer achieves two (2.0 A −2 1.69 V, IR‐included) those previous in‐house (QPAF‐4‐2.0) (1.0 IR‐included). During 1000 h operation 1.0 , exhibits nearly constant voltage with a decay rate 1.1 µV after initial increase voltage, proving effectiveness AEMWEs.

Language: Английский

Citations

15
Electrodialysis as a key operating unit in chemical processes: From lab to pilot scale of latest breakthroughs DOI Creative Commons
Guillaume Hopsort, Quentin Cacciuttolo, David Pasquier

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153111 - 153111

Published: June 14, 2024

This review article comprehensively explores the significant advancements in electrodialysis (ED) technology within field of chemical engineering, presenting a holistic overview that spans fundamental principles, membrane materials and fabrication techniques, operational parameters, wide array applications. Unlike previous studies often narrow their focus to specific aspects ED, this work synthesizes global advances, bridging gaps between diverse research themes offer coherent understanding current trends future directions. membrane-based separation process driven by electric potential, is pivotal for its applications water purification, desalination, resource recovery, beyond. delves into evolution ion-exchange membranes, highlighting innovations materials, alongside advances techniques enhance selectivity efficiency. It also scrutinizes impact parameters on performance ED systems, addressing challenges like ion leakage, fouling, balance conductivity. Process intensification system optimization strategies are discussed, revealing how recent developments contribute energy efficiency, scalability, sustainability. The further extends emerging sectors ranging from environmental management hydrometallurgy industries, underscored case demonstrate practical implementations. Conclusively, underlines multidisciplinary approach required advancement technologies, suggesting avenues prioritize impact, economic feasibility, technological innovation. Through perspective, it aims catalyze exploration application some most pressing challenges.

Language: Английский

Citations

12
Recent Progress and Perspectives on Functional Materials and Technologies for Renewable Hydrogen Production DOI Creative Commons
Mona Lisa Moura de Oliveira, Camila Maria Aguiar da Costa Alves, Carla Freitas de Andrade

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(4), P. 3282 - 3303

Published: Jan. 21, 2025

Scientists worldwide have been inspecting hydrogen production routes and showing the importance of developing new functional materials in this domain. Numerous research articles published past few years, which require records analysis for a comprehensive bibliometric bibliographic review low-carbon production. Hence, data set 297 publications was selected after filtering journal papers since 2010. The search keywords Scopus Database were "green hydrogen" "low carbon materials". analyzed using R Bibliometrix package. This made it possible to determine total annual publication rate segregate by country, author, journal, institution. With general upward trend number publications, China identified as leading country on subject, followed Germany Korea. Keyword chronological evolution several important related topic showed focus water splitting H2 Finally, provides future directions technologies

Language: Английский

Citations

2
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
Exploring the critical role of binders in electrochemical CO2 reduction reactions DOI

Younghyun Chae,

Hyunwook Kim,

Dong Ki Lee

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 130, P. 110134 - 110134

Published: Aug. 17, 2024

Language: Английский

Citations

8
Understanding and resolving the heterogeneous degradation of anion exchange membrane water electrolysis for large-scale hydrogen production DOI Creative Commons
Jia Lei, Ziyi Wang, Yunze Zhang

et al.

Carbon Neutrality, Journal Year: 2024, Volume and Issue: 3(1)

Published: Aug. 26, 2024

Abstract Anion exchange membrane water electrolysis (AEMWE) has seen rapid advancements over the past decade due to its promising role in green hydrogen production. Ensuring long-term functionality is as crucial optimizing performance achieve commercial viability and industrial integration. However, few studies have systematically discussed degradation issues of this technology. Therefore, a thorough understanding AEMWE needed guide design, assembly, operation, maintenance device lifetime. To address gap, review overviewed heterogeneous across different material interface levels, focusing on several key components including catalysts, ionomers, membranes, gas diffusion layers. The influences these their interfaces catalytic efficiency, active site density, mass electron transfer capabilities were discussed. Moreover, impacts operation conditions, temperature, electrolyte composition, clamping pressure, stable assessed. Accordingly, current mitigation strategies resolve phenomena rigorously evaluated. By offering insights into operations, designing materials, improving assessment protocols for AEMWE, work will contribute enhancing stability large-scale

Language: Английский

Citations

8
Salt Precipitation and Water Flooding Intrinsic to Electrocatalytic CO2 Reduction in Acidic Membrane Electrode Assemblies: Fundamentals and Remedies DOI Creative Commons
Qianqian Bai,

Likun Xiong,

Yongjia Zhang

et al.

EES Catalysis, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The fundamentals of salt precipitation and water flooding in membrane electrode assemblies for acidic electrocatalytic CO 2 reduction are discussed potential remedies via engineering electrodes, electrolytes, membranes proposed.

Language: Английский

Citations

7
Rechargeable Hydrogen Gas Batteries: Fundamentals, Principles, Materials, and Applications DOI
Taoli Jiang, Ziwei Zhang,

Shuyang Wei

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

The growing demand for renewable energy sources has accelerated a boom in research on new battery chemistries. Despite decades of development various types, including lithium-ion batteries, their suitability grid-scale storage applications remains imperfect. In recent years, rechargeable hydrogen gas batteries (HGBs), utilizing catalytic electrode as anode, have attracted extensive academic and industrial attention. HGBs, facilitated by appropriate catalysts, demonstrate notable attributes such high power density, capacity, excellent low-temperature performance, ultralong cycle life. This review presents comprehensive overview four key aspects pertaining to HGBs: fundamentals, principles, materials, applications. First, detailed insights are provided into electrodes, encompassing electrochemical mechanisms, advancements structural considerations design. Second, an examination future prospects cathode material compatibility, both current potential summarized. Third, other components engineering HGBs elaborated, cell stack design pressure vessel Finally, techno-economic analysis outlook offers the status indicating orientation further application advancements.

Language: Английский

Citations

7
Ion-conducting polymer thin films via chemical vapor deposition polymerization DOI Creative Commons
Kwang‐Won Park, Christina Yu, S.K. Fu

et al.

Soft Matter, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Ion-conducting polymers (ICPs) are gaining interest in various scientific and technological fields. This review highlights advancements ICP thin films using chemical vapor deposition (CVD) addresses challenges of traditional methods.

Language: Английский

Citations

1