Journal of Membrane Science最新文献

{"title":"Pillararene-based supramolecular polymeric sub-nanochannel membranes with enhanced cation selectivity for osmotic energy conversion","authors":"Yumei Wang ,&nbsp;Qingyang Zhang ,&nbsp;Zichen Li ,&nbsp;Mingxin Nie ,&nbsp;Yi Liu ,&nbsp;Yue Sun","doi":"10.1016/j.memsci.2025.124162","DOIUrl":"10.1016/j.memsci.2025.124162","url":null,"abstract":"<div><div>The development of ion-selective sub-nanochannel membranes with high ionic flux and low electrical resistance remains a huge challenge. Herein, pillararene-based supramolecular polymeric membranes were assembled using the network-structured sulfo group poly(pillar[5]arene) and sulfonated poly(ether ether ketone). Highly selective cation transport and efficient salinity gradient energy conversion were achieved by reconstructing the ion transport channel and introducing free volume to make the channel size less than 1 nm. Pore size distribution was adjusted by increasing the pillararene content, improving the microstructure and macroscopic properties of nanochannel membranes, and promoting ion transport. The ion transport mechanism within the transport channel was generated via multiple synergistic effects of increasing charge density, free volume, and cation-π interactions. As osmotic energy generators, pillararene-based supramolecular polymeric membranes exhibited an impressive output power density of 19.3 W m⁻² and an ultra-high Na⁺ transference number (0.98), with an energy conversion efficiency of 46.1 % at a 50-fold NaCl concentration gradient. These results present a novel strategy to construct angstrom-scale channel for the application toward emerging energy technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124162"},"PeriodicalIF":8.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inorganic nanosheet-engineered ceramic membranes with tunable pore structures for monodisperse and stable emulsions","authors":"Shilong Li ,&nbsp;Yiwen Wei ,&nbsp;Kecheng Guan ,&nbsp;Can Yuan ,&nbsp;Wenbo Jiang ,&nbsp;Dong Zou ,&nbsp;Caishen Zhao ,&nbsp;Jian Lu ,&nbsp;Bin Chen ,&nbsp;Jian Qiu ,&nbsp;Junjie Xu ,&nbsp;Tianxiang Yu ,&nbsp;Yuqing Sun ,&nbsp;Lele Cui ,&nbsp;Wenheng Jing","doi":"10.1016/j.memsci.2025.124155","DOIUrl":"10.1016/j.memsci.2025.124155","url":null,"abstract":"<div><div>Porous ceramic membranes have gained increasing attention for emulsion preparation. However, the limited and challenging-to-control distances between adjacent pores often lead to droplet coalescence, resulting in emulsions with large sizes, wide distributions, and poor stability. Here, leveraging 2D Ti₃C₂T_x and TiO₂ sol as platforms, we present a novel and scalable strategy for designing ceramic membranes with enlarged and tunable pore distances, specifically optimized for emulsification. By laying Ti₃C₂T_<em>x</em> nanosheets into TiO₂ sol particles to form partitions, the uniform stacking of TiO₂ particles is disrupted, thereby increasing the pore spacing and minimizing emulsion aggregation. The adjacent pore distances (0.5–2.2 μm) can be precisely tuned by regulating the Ti₃C₂T_<em>x</em> nanosheet dimensions, achieving pore distances up to seven times larger than the TiO₂ particle size, surpassing conventional ceramic membranes. Consequently, using the engineered TiO₂–Ti₃C₂T_<em>x</em> membranes and a dual-surfactant system (Span 85/Tween 80), we successfully prepared size-tunable (average particle size: 1.44–2.59 μm), monodisperse (span: 0.73–1.2) water-in-bio-heavy oil emulsions with exceptional stability (up to 2 months), showing substantial improvements in droplet size and uniformity compared to previously reported systems. This approach offers an effective and scalable method for fabricating emulsification-functional ceramic membranes with easily adjustable pore structures, advancing the development of high-performance membrane materials for a variety of emulsification applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124155"},"PeriodicalIF":8.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of bSPI/GO@ZIF67 composite membranes with excellent proton conductivity and selectivity for vanadium redox flow battery application","authors":"Wenheng Huang ,&nbsp;Jun Long ,&nbsp;Huiting Li ,&nbsp;Jinchao Li ,&nbsp;Liang Chen ,&nbsp;Qin Chen ,&nbsp;Qianqian Liang ,&nbsp;Xuedan Chen ,&nbsp;Yaping Zhang","doi":"10.1016/j.memsci.2025.124164","DOIUrl":"10.1016/j.memsci.2025.124164","url":null,"abstract":"<div><div>Series of novel branched sulfonated polyimide/graphite oxide@zeolite imidazolate framework-67 (bSPI/GO@ZIF67) composite membranes were prepared by a solution-casting method for vanadium redox flow battery (VFB) application. ATR-FTIR, EDS and XPS analyses confirm the successful fabrication of the bSPI/GO@ZIF67 composite membranes. The optimized bSPI/GO@ZIF67–1.5 % composite membrane shows outstanding performance, including a favorable area resistance (0.15 Ω cm²), reduced vanadium ion permeability (1.64 × 10⁻⁷ cm² min⁻¹), and exceptional proton selectivity (1.97 × 10⁵ min cm⁻³) compared with Nafion 212. Meanwhile, the bSPI/GO@ZIF67–1.5 % composite membrane shows superior coulomb and energy efficiencies (97.5 %–99.3 % and 88.1 %–73.7 %, respectively) at 100 mA cm⁻²–300 mA cm⁻², along with an extended self-discharge duration of 50.4 h, outperforming Nafion 212. Furthermore, the membrane maintains stability over 800 charge/discharge cycles at 160 mA cm⁻². Theoretical calculations reveal strong hydrogen bonding interactions between the nitrogen in the imidazole group of ZIF67 and the hydrogen in the sulfonic group of bSPI, with a bond distance of 1.06 Å and an interaction energy of −12.42 kcal mol⁻¹ individually. This interaction enhances the chemical stability of bSPI while effectively balancing proton conduction and vanadium ion blocking due to the incorporation of GO@ZIF67 fillers. Overall, the bSPI/GO@ZIF67–1.5 % composite membrane demonstrates significant potential for use in VFBs, offering enhanced efficiency, durability, and stability.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124164"},"PeriodicalIF":8.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gas separation performance of ultra-permeable graphene oxide membranes supported by single-wall carbon nanotubes: Unveiling the effect of fabrication method, gas flow transport type, and material aging","authors":"Dániel Gardenӧ ,&nbsp;Laura Bábanová ,&nbsp;Vlastimil Mazánek ,&nbsp;Zdeněk Sofer ,&nbsp;Pavel Kříž ,&nbsp;Lukáš Mrazík ,&nbsp;Jan Mareš ,&nbsp;Jana Floreková ,&nbsp;Josef Schneider ,&nbsp;Saeed Jamali Ashtiani ,&nbsp;Carola Vorndran ,&nbsp;Matthias Thommes ,&nbsp;Karel Friess","doi":"10.1016/j.memsci.2025.124156","DOIUrl":"10.1016/j.memsci.2025.124156","url":null,"abstract":"<div><div>This study comprehensively investigated the impact of the preparation method on the resulting material properties of self-standing graphene oxide (GO) membranes and GO membranes deposited on a single-walled carbon nanotube (SWCNT) support layer, which was carried out using SEM, XRD, XPS, Raman and FTIR spectroscopy, 3D profilometry, thermal analysis and physisorption characterisation. The analysis of the gas permeability and separation properties of the membranes (including the effect of ageing) performed by repeated time-lag measurements of individual gases revealed a gradually increasing permeability and ideal selectivity, probably due to the release of residual water from the mother liquor. Samples prepared by the evaporation or vacuum filtration method exhibited a relatively short lifetime (up to 100 h), high H₂ permeability (up to 12,000 Barrers), and ideal H₂/CO₂ selectivity from 2 to 3. In contrast, membranes prepared by the pressure filtration method showed durable character for almost 800 days while showing huge and increasing permeability exceeding 100,000 Barrers and, at the same time, remarkable selectivity for H₂/CO₂ (more than 4) and H₂/CH₄ (around 2) gas vapors, over the 2008 Robeson upper bound limit. The transport analysis performed <em>via</em> the Binary Friction Model revealed the predominant type of gas transport as Darcy flow rather than Knudsen type. Our work demonstrates the potential of GO-SWCNT membrane materials for developing new advanced separation membranes for future efficient gas, vapor, or liquid separation technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124156"},"PeriodicalIF":8.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and characterization of micro-nano cellulose fibers composite separators for sodium-ion batteries","authors":"Xiaohang Ma ,&nbsp;Chuhui Zhao ,&nbsp;Mengyuan Ge ,&nbsp;Tianwen Zhang ,&nbsp;Yuan Ma ,&nbsp;Xueqian Zhang ,&nbsp;Juanjuan Zhao ,&nbsp;Yiyong Wei ,&nbsp;Zhenfa Zi ,&nbsp;Hongfa Xiang ,&nbsp;Linhua Hu ,&nbsp;Chaobin Yin ,&nbsp;Zhigang Liu","doi":"10.1016/j.memsci.2025.124161","DOIUrl":"10.1016/j.memsci.2025.124161","url":null,"abstract":"<div><div>Cellulose fibers characterized by low cost, well chemical stability and environmental friendliness, are a significant direction for sodium-ion batteries separator materials. However, the cellulose film is dense due to the hydrogen bonding between hydroxyl groups, corresponding to the low porosity, ionic conductivity and poor wettability to the electrolyte of sodium-ion batteries, which seriously limits application performance. A strategy to regulate the microstructure of cellulose films using micro-nano cellulose fiber composites is proposed in this thesis. Micro-cellulose fibers are extracted from cattail rods and nano-cellulose fibers are obtained from ordinary qualitative filter paper, respectively. Cellulose-based composite separators are synthesized by a conventional screening method and the influence of composite ratios on the separator behaviors is explored. The composite separator with micro-nano fibers mass ratio of 2:1 has a better overall performance, including porosity of 88.3 % and ionic conductivity of 0.63 × 10⁻³ S cm⁻¹. The assembled Na₃V₂(PO₄)₃/Na half-cells deliver high cycle capacity retention rate of 97.0 % at 1 C after 500 cycles, rate capacity retention rate of 85.5 % at 10 C, as well as a small potential polarization and fine interface stability. These results provide alternative approach for the design of high-performance and low-cost cellulose-based separators for sodium-ion batteries.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124161"},"PeriodicalIF":8.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maintaining high magnesium/lithium selectivity in nanofiltration at high salinity: optimizing membrane charge distribution for synergistic Donnan and ion adhesion effects","authors":"Wenyan Ji ,&nbsp;Yuping Li ,&nbsp;Feng Duan ,&nbsp;Lulu Liu ,&nbsp;Renqiang Cao ,&nbsp;Jingya Yin ,&nbsp;He Sun ,&nbsp;Jianquan Luo ,&nbsp;Hongbin Cao","doi":"10.1016/j.memsci.2025.124160","DOIUrl":"10.1016/j.memsci.2025.124160","url":null,"abstract":"<div><div>Nanofiltration membranes are essential for lithium recovery from brine, but their selectivity declines under high-salt conditions due to electrostatic shielding and fouling. We introduce a novel strategy to enhance membrane performance by enhancing positive charge density on the membrane surface while creating negative charge microdomains within the membrane. Specifically, we functionalized a polyethyleneimine-based membrane with 1,4-butanesultone through a ring-opening reaction, which balanced ion-membrane affinity and optimized the transport kinetics of water and ions. The resulting membrane exhibited a significant enhancement in permeance up to 11.2 L m⁻² h⁻¹ bar⁻¹ and selectivity for Mg²⁺/Li⁺ up to 51. Notably, it maintained over 96.21 % MgCl₂ rejection across a wide salt concentration range of 1–20 g L⁻¹, outperforming the results reported in literature. The comprehensive testing and mechanistic study indicate that this improved performance is due to the synergy of Donnan effect and ion-attraction, facilitated by the designed charge distribution. A two-stage nanofiltration process employing this membrane reduced the Mg²⁺/Li⁺ ratio in brine samples from 43 to 0.25, highlighting its practical application potential. This work introduces a new paradigm for the design of highly selective membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124160"},"PeriodicalIF":8.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic radical scavenging and multifaceted membrane properties: comparative evaluation of CeMOx (M = Zr, Mn, Zn) bimetallic oxide embedded sPEEK membranes for hydrogen fuel cells","authors":"Sk Miraz Hossain ,&nbsp;Pratyush Patnaik ,&nbsp;Santoshkumar D. Bhat ,&nbsp;Uma Chatterjee","doi":"10.1016/j.memsci.2025.124159","DOIUrl":"10.1016/j.memsci.2025.124159","url":null,"abstract":"<div><div>The degradation of proton exchange membranes (PEMs) caused by radical attacks during real-time fuel cell operations poses a significant challenge to their performance and durability. To address this, cerium-based bimetallic oxides were developed by chemically incorporating a secondary transition metal (Zr, Mn, and Zn) into the ceria crystal lattice, to make it more efficient in mitigating radical degradation. This study presents a comparative analysis of the hydrogen fuel cell performance and durability of sulfonated poly(ether ether ketone) (sPEEK)-based composite PEMs (SPZr, SPZn, and SPMn) containing a fixed filler loading of 2 % (w/w) each. The reversible Ce³⁺/Ce⁴⁺ redox cycle scavenges harmful radicals, which is further enhanced by the secondary metal promoting oxygen vacancies and increasing Ce³⁺ content. However, the performance and stability of the prepared PEMs varied depending on the secondary metal present in the bimetallic oxides. Among the composite PEMs, SPZr outperformed the others due to the enhanced synergistic interaction (combined effect of electrostatic, ionic, interfacial, and hydrogen bonding interactions) between CeZrO_x and the polymer electrolyte, and the surplus oxidative tolerance provided by Zr. Representative SPZr showed only a 17 % and 15 % loss in mass and conductivity after its prolonged exposure to Fenton's solution. Additionally, SPZr achieved an impressive peak power density of 589.6 mW cm⁻² and a current density of 788 mA cm⁻² at 0.6 V at 80 °C and 100 % RH, a H₂ crossover current density of 1.62 mA cm⁻², and proton conductivity of 34.9 mS cm⁻¹ at 80 °C. The fuel cell performance of SPZr was found to be 52 % higher than that of the pristine sPEEK membrane, with 85.2 % retention in its OCV with a decay rate of 1.4 mV h⁻¹, after the durability test.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124159"},"PeriodicalIF":8.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complete coverage fouling model for constant flux crossflow ultrafiltration and experimental validation","authors":"Yu-Heng Cheng ,&nbsp;Alon Y. Kirschner ,&nbsp;Jun Jie Wu ,&nbsp;Mostafa Nassr ,&nbsp;William A. Sullivan ,&nbsp;Donald R. Paul ,&nbsp;Lynn E. Katz ,&nbsp;Robert W. Field ,&nbsp;Benny D. Freeman","doi":"10.1016/j.memsci.2025.124132","DOIUrl":"10.1016/j.memsci.2025.124132","url":null,"abstract":"<div><div>A complete coverage model is proposed to describe fouling in constant flux crossflow ultrafiltration. Constant flux crossflow fouling experiments were conducted using dilute latex bead suspensions and commercial poly(ether sulfone) flat sheet ultrafiltration membranes to investigate the influence of operating conditions on evolution of transmembrane pressure (ΔP, TMP) with time. Changes in permeate flux or crossflow rate had little influence on the normalized TMP profile at high latex bead concentration (i.e., above 25 ppm) because the membrane surface was covered with latex beads. At low concentration (i.e., below 25 ppm), increases in permeate flux or foulant concentration increased normalized ΔP. However, this increase in normalized ΔP with permeate flux or foulant concentration diminishes when the permeate flux/concentration is high enough to overwhelm particle removal due to crossflow. These results are in good agreement with the new complete coverage model which describes the influence of operating parameters on fouling better than the previous model.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124132"},"PeriodicalIF":8.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen recovery using hollow fiber membranes in the ammonia cracking process","authors":"Edoardo Magnone,&nbsp;Sung Woo Han,&nbsp;Xuelong Zhuang,&nbsp;Jae Yeon Hwang,&nbsp;Min Chang Shin,&nbsp;Min Young Ko,&nbsp;Jung Hoon Park","doi":"10.1016/j.memsci.2025.124158","DOIUrl":"10.1016/j.memsci.2025.124158","url":null,"abstract":"<div><div>This study investigates the separation performance of various hollow fiber membranes (HFMs) for hydrogen (H₂) recovery from ammonia (NH₃) cracking processes. Oxide-based (γ-Al₂O₃ and SiO₂) and metal-based (Pd and Pd–Ag–Cu) thin films were deposited on α-Al₂O₃ HFM supports and exposed to H₂, N₂ and trace of NH₃ gas at 450 °C and 0.5–2.0 bar. The separation factor was defined as the ratio of the H₂ permeate flow rate to the N₂ permeate flow rate (α H₂/N₂) and to the NH₃ permeate flow rate (α H₂/NH₃). Results show that Pd-based HFMs have better H₂ selectivity than oxide-based HFMs. The Pd–Ag–Cu/α-Al₂O₃ HFM had the highest H₂-to-NH₃ selectivity with a α H₂/NH₃ separation factor of 1.4 10⁴ over the tested pressure range. Pressure dependence varied among HFM types, metal-based HFMs showed increased H₂ selectivity at higher pressures. These results have big implications for developing advanced membrane-based gas-gas separation processes for H₂ purification in proton exchange membrane (PEM) fuel cell (FC) applications. Pd-alloy HFMs, especially Pd–Ag–Cu, are shown to be good for high-selectivity H₂ separation from NH₃ cracking products.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124158"},"PeriodicalIF":8.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Poly(isatin-co-biphenyl alkylene) anion exchange membranes with fluorinated side chains and pendant cationic groups for water electrolysis","authors":"Tengyu He ,&nbsp;Rouwen Shen ,&nbsp;Chenxiao Lin ,&nbsp;Aimei Zhu ,&nbsp;Zhaoxiong Xie ,&nbsp;Qiugen Zhang","doi":"10.1016/j.memsci.2025.124148","DOIUrl":"10.1016/j.memsci.2025.124148","url":null,"abstract":"<div><div>Developing high-performance, durable anion exchange membranes (AEMs) is crucial for the industrial applications of anion exchange membrane water electrolysis (AEMWE). Herein, a series of poly(biphenyl-alkylene) anion exchange membranes featuring fluorinated side chains and pendant quaternary ammonium groups are designed and prepared. The incorporation of hydrophobic fluorinated side chains promotes self-assembly, resulting in an obvious microphase separation structure that improves ionic conductivity and reduces membrane swelling. The developed AEMs achieve a maximum OH‾ conductivity of 124 mS cm⁻¹ and a low swelling ratio of 20.8 % at 80 °C. Additionally, the membranes demonstrate excellent alkaline stability, retaining 90.8 % of their conductivity after 1560 h of immersion in 1 M KOH at 80 °C. When assembled in a water electrolyzer, the AEMs exhibit a high current density of 4.7 A cm⁻² at 2 V (80 °C) and maintain outstanding durability at 0.5 A cm⁻² for over 1000 h, with a low voltage decay rate of 210 μV h⁻¹. These developed AEMs show great potential for practical applications in energy conversion devices.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124148"},"PeriodicalIF":8.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}