Advanced Membranes最新文献_第2页

Ligand substitution engineering for modulating the pore microenvironment of MOFs to enhance CO2 gas separation performance in mixed matrix membranes 通过配体取代工程调节mof孔微环境以提高混合基质膜CO2气体分离性能

IF 9.5

Advanced Membranes

Pub Date : 2026-06-01 Epub Date: 2025-12-29 DOI: 10.1016/j.advmem.2025.100210

Xiangwei Li , Junjian Yu , Shuai Han , Yuzheng Zhou , Yuxuan Liang , Yuchao Wang , Zhe Wang

Defect engineering allows for precise control of the microporous structure and coordination defects in metal-organic frameworks (MOFs). This approach offers an innovative pathway to optimize the gas separation performance of MOF/polymer mixed matrix membranes (MMMs). Herein, UiO-PzDC nanoparticles with gradient defects were synthesized by substituting terephthalic acid with 2,5-pyrazinedicarboxylic acid (PzDC) as a linker in a novel UiO-66 derivative, while modulating the defect concentration through the addition of 2-pyrazinecarboxylic acid (2-PZC). The material was dispersed within a highly permeable polymer matrix (e.g., PIM-1), and the influence of defect concentration on the interfacial properties and mass transfer behavior of mixed matrix membranes (MMMs) was systematically investigated. Combined analysis of experimental results and molecular dynamics simulations demonstrated that the incorporation of PzDC ligands significantly enlarged the MOF pore size, while the 2-PZC-induced defects further enhanced the microporous connectivity. Owing to the synergistic effect of MOF defects and the PIM-1 matrix, the composite membranes demonstrated superior filler-matrix interfacial compatibility, and the defect concentration exhibited no significant influence on interfacial stability. Gas transport studies revealed that the defect-engineered MOF facilitated an ultrafast transport channel for CO₂ through enhanced diffusion selectivity. MMMs containing a high defect concentration of UiO-PzDC (defectivity: 3.03) exhibit breakthrough separation performance, achieving a CO₂ permeability of 18,553 Barrer (a 384 % improvement over pure PIM-1) and a CO₂/N₂ selectivity of 23. This performance combination surpasses the 2019 Robeson upper bound. This study elucidates the universal principle of ligand substitution and defect engineering in synergistically modulating the mass transfer mechanism of metal-organic frameworks (MOFs), establishing a novel paradigm for designing next-generation membrane materials that simultaneously exhibit high permeability and selectivity.

缺陷工程可以精确控制金属有机骨架（MOFs）的微孔结构和配位缺陷。该方法为优化MOF/聚合物混合基质膜（MMMs）的气体分离性能提供了一条创新途径。本文以2,5-吡嗪二羧酸（PzDC）为连接剂，在新型UiO-66衍生物中取代对苯二甲酸，并通过添加2-吡嗪二羧酸（2- pzc）调节缺陷浓度，合成了具有梯度缺陷的UiO-PzDC纳米颗粒。将材料分散在高渗透性聚合物基体（如PIM-1）中，系统地研究了缺陷浓度对混合基质膜（MMMs）界面性能和传质行为的影响。结合实验结果和分子动力学模拟分析表明，PzDC配体的掺入显著增大了MOF的孔径，而2- pzc诱导的缺陷进一步增强了微孔的连连接性。由于MOF缺陷与PIM-1基质的协同作用，复合膜具有较好的填料-基质界面相容性，缺陷浓度对界面稳定性无显著影响。气体输运研究表明，缺陷设计的MOF通过增强扩散选择性，促进了CO2的超快输运通道。含有高缺陷浓度UiO-PzDC（缺陷率：3.03）的MMMs表现出突破性的分离性能，实现了18553 Barrer的CO2渗透率（比纯PIM-1提高了384%）和23的CO2/N2选择性。这一业绩组合超过了2019年罗布森上限。本研究阐明了配体取代和缺陷工程在协同调节金属有机骨架（mof）传质机制中的普遍原理，为设计同时具有高渗透性和选择性的下一代膜材料建立了新的范例。

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引用次数: 0

Emerging trends in fouling mitigation for membrane distillation and pervaporation: Implications for desalination and wastewater treatment 缓解膜蒸馏和渗透蒸发污染的新趋势：对海水淡化和废水处理的影响

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-17 DOI: 10.1016/j.advmem.2025.100177

Anniza Cornelia Augusty, Linhua Fan, Seungju Kim

Thermally driven membrane separation processes, such as membrane distillation (MD) and pervaporation (PV), are emerging technologies for desalination and water treatment applications. While both processes offer high separation efficiency and water productivity, their practical applications are often hindered by membrane fouling. In particular, the accumulation of organic foulants on membrane surfaces, resulting from specific interactions between the foulants and the membrane, poses a persistent challenge. This review provides a critical comparison of the fouling mechanisms observed in hydrophobic, porous MD membranes versus hydrophilic, non-porous PV membranes. It further examines recent advancements in membrane material development, including novel membrane designs, surface modifications, and patterning strategies aimed at mitigating organic fouling in both systems. Key challenges and future research directions are also discussed, with a focus on the development of advanced membrane materials and innovative pretreatment and cleaning strategies to enhance the viability of thermally driven membrane technologies in real-world applications.

热驱动膜分离工艺，如膜蒸馏（MD）和渗透蒸发（PV），是用于海水淡化和水处理应用的新兴技术。虽然这两种工艺都具有很高的分离效率和水产率，但它们的实际应用往往受到膜污染的阻碍。特别是，由于污染物与膜之间的特定相互作用，有机污染物在膜表面的积累构成了一个持续的挑战。这篇综述提供了在疏水、多孔的MD膜和亲水、无孔的PV膜中观察到的污染机制的关键比较。它进一步研究了膜材料发展的最新进展，包括新型膜设计、表面修饰和旨在减轻两种系统中有机污染的图案策略。讨论了主要挑战和未来的研究方向，重点是开发先进的膜材料和创新的预处理和清洁策略，以提高热驱动膜技术在实际应用中的可行性。

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引用次数: 0

Osmotic energy harvesting from produced water and boiler blowdown water by sulfonated Poly(ether ether ketone)-based mixed matrix membranes 磺化聚醚醚酮基混合基质膜从采出水和锅炉排污水中收集渗透能

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-11-01 DOI: 10.1016/j.advmem.2025.100180

Li Cao , I-Chun Chen , Cailing Chen , Xiaowei Liu , Kai Qu , Zhen Li , Khalid Hazazi , Zhiping Lai

The salinity gradient between produced water and boiler blowdown water – both significant waste streams in the petroleum industry – represents an emerging, clean, and sustainable energy source. This energy can be directly converted to electricity through reverse electrodialysis. In this study, we developed a series of sulfonated polyether ether ketone (SPEEK)/UiO-66-SO₃H mixed matrix membranes specifically tailored for osmotic energy harvesting from these industrial effluents. The incorporation of UiO-66-SO₃H nanoparticles into the SPEEK matrix significantly enhanced ion permeance, which can be attributed to the well-defined and appropriately sized pore structure of UiO-66-SO₃H. When exploiting the salinity gradient between actual samples of produced water and boiler blowdown water, the membranes containing 20 wt% UiO-66-SO₃H achieved a maximum power density of 5.3 W m⁻² at an operational temperature of 60 °C. More importantly, these membranes demonstrated high stability during prolonged operational testing, highlighting their potential for sustainable and efficient energy generation from waste streams in the petroleum industry.

采出水和锅炉排污水之间的盐度梯度是石油工业中重要的废物流，代表着一种新兴的、清洁的和可持续的能源。这种能量可以通过反向电渗析直接转化为电能。在这项研究中，我们开发了一系列磺化聚醚醚酮(SPEEK)/UiO-66-SO3H混合基质膜，专门用于从这些工业废水中渗透能量收集。将UiO-66-SO3H纳米颗粒掺入SPEEK基质后，离子渗透性显著增强，这可归因于UiO-66-SO3H孔隙结构清晰且大小合适。当利用实际产出水和锅炉排污水样品之间的盐度梯度时，在60℃的工作温度下，含20wt % uuo -66- so3h的膜的最大功率密度为5.3 W m−2。更重要的是，这些膜在长时间的运行测试中表现出了高稳定性，突出了它们在石油工业废水中可持续高效发电的潜力。

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引用次数: 0

Hydrazone-linked covalent organic frameworks for membrane separation 膜分离用腙连接共价有机框架

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-11-06 DOI: 10.1016/j.advmem.2025.100188

Jingsi Yuan , Keke Liu , Yunqiu Zhou , Penglin Cheng , Binyu Zhou , Xueli Cao , Miaomiao Tian , Shi-Peng Sun , Yatao Zhang , Junyong Zhu

Covalent organic frameworks (COFs), which are porous crystalline materials built using reticular and dynamic covalent chemistry, are attracting significant interest in advanced membrane separations. Their appeal stems from their higher mass transport efficiency and superior precision sieving, enabled by their ordered and modifiable pore channels, high porosity, and designable structure. Hydrazone-linked COFs, a subclass of Schiff base COFs, have emerged as promising membrane materials due to their large surface area, structural flexibility, and abundant heteroatomic sites. The versatility of their structure allows for precise tuning of pore size, architecture, and functionality by selecting specific building blocks or through post-modification, enabling the development of customized membranes for targeted separations. This review provides a comprehensive examination of the synthesis methods and applications of hydrazone-linked COF-based membranes, highlighting how their chemical stability, pore characteristics, and heteroatomic functionalities govern their performance. We analyze various fabrication techniques—including mixing, interfacial polymerization, covalent nanosheet stacking, and in situ growth—and discuss their impact on membrane performance. The applications in gas separation, water treatment, membrane catalysis, and energy storage are systematically evaluated, with a comparative analysis against conventional membrane materials. Finally, we identify persistent challenges related to scalability and long-term stability and outline future research directions to facilitate the practical implementation of these advanced membranes.

共价有机框架（COFs）是一种利用网状和动态共价化学构建的多孔晶体材料，在先进的膜分离领域引起了人们的极大兴趣。它们的吸引力来自于它们更高的质量传输效率和卓越的精确筛分，这是由于它们有序和可修改的孔隙通道、高孔隙率和可设计的结构。作为希夫碱COFs的一个亚类，腙连接COFs因其大表面积、结构柔韧性和丰富的杂原子位点而成为一种很有前途的膜材料。其结构的多功能性允许通过选择特定的构建块或通过后期修改来精确调整孔径，结构和功能，从而开发针对目标分离的定制膜。本文综述了腙连接cof基膜的合成方法和应用，重点介绍了它们的化学稳定性、孔隙特性和杂原子功能如何影响它们的性能。我们分析了各种制备技术，包括混合、界面聚合、共价纳米片堆叠和原位生长，并讨论了它们对膜性能的影响。系统评价了其在气体分离、水处理、膜催化、储能等方面的应用，并与传统膜材料进行了对比分析。最后，我们确定了与可扩展性和长期稳定性相关的持续挑战，并概述了未来的研究方向，以促进这些先进膜的实际实施。

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引用次数: 0

Poly(arylpiperidine) anion-exchange membranes utilizing varied side-chain cross-linking for enhanced electrodialytic ion separation in alkaline waste treatment 利用不同侧链交联的聚芳基哌啶阴离子交换膜在碱性废物处理中增强电渗析离子分离

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-01 DOI: 10.1016/j.advmem.2025.100173

Yazhen Jiang , Yan Zhang , Zhibo Zhang , Yangbo Qiu , Geting Xu , Sisheng Fang , Junbin Liao , Zhishan Chen , Jiangnan Shen , Congjie Gao

Electrodialysis with anion-exchange membranes (AEMs) is effective for reclaiming alkaline substances from industrial effluents, but conventional AEMs suffer from active group degradation under harsh alkaline conditions. To address this limitation, we designed novel polyarylpiperidine-based AEMs using 1,6-dibromohexane as the cross-linker and incorporating varied side-chain groups. The optimized PBP-co-COOH AEM exhibited exceptional alkali stability: nuclear magnetic resonance confirmed polymeric backbone stability after 1200 h of exposure to 2.0 M NaOH at 80 °C, and thermogravimetric analysis showed minimal mass loss (<8.7 %). In practical electrodialysis (feed concentration: 0.40 M–0.11 M), this membrane achieved a high current efficiency of 90.21 % and low energy consumption of 2.22 kW h kg⁻¹, outperforming the commercial Neosepta AHA membrane (80.31 % current efficiency, 2.75 kW h kg⁻¹ energy consumption) in both metrics. These results demonstrate that modulating ionic moieties in membrane side chains significantly enhances electrodialysis performance. This membrane design provides a promising strategy for developing alkali-resistant AEMs, with valuable implications for optimizing alkaline reclamation processes and advancing industrial-scale applications.

阴离子交换膜电渗析是回收工业废水中碱性物质的有效方法，但传统的阴离子交换膜在恶劣的碱性条件下存在活性基团降解的问题。为了解决这一限制，我们设计了新的基于聚芳基胡椒啶的AEMs，使用1,6-二溴己烷作为交联剂并加入不同的侧链基团。优化后的PBP-co-COOH AEM表现出优异的碱稳定性：核磁共振证实，在2.0 M NaOH在80°C下暴露1200 h后，聚合物骨架稳定，热重分析显示，质量损失最小（< 8.7%）。在实际的电渗析（进料浓度：0.40 M - 0.11 M）中，该膜实现了90.21%的高电流效率和2.22 kW h kg - 1的低能耗，在这两个指标上都优于商业Neosepta AHA膜（80.31%的电流效率，2.75 kW h kg - 1的能耗）。这些结果表明，调节膜侧链中的离子部分可显著提高电渗析性能。这种膜设计为开发耐碱AEMs提供了一种有前途的策略，对优化碱回收工艺和推进工业规模应用具有重要意义。

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引用次数: 0

Enhanced stability of pyridine-containing poly(arylene ether) membranes for vanadium redox flow battery: influence of backbone structure 钒氧化还原液流电池用含吡啶聚芳醚膜稳定性的提高：骨架结构的影响

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-23 DOI: 10.1016/j.advmem.2025.100181

Yuchao Yang , Bengui Zhang , Qian Liu , Zhenfeng Sun , Chao Yang , Tao Li , Songwei Zhang , Jingjun He , Feixiang Zhai , Zhihan Song , Enlei Zhang , Kangjun Wang

Vanadium redox flow batteries (VRFBs) are emerging as large-scale energy storage devices to solve volatility in the utilization of renewable energy. As key components of VRFBs, membranes still suffer from problems such as high cost, low conductivity, or insufficient stability. Pyridine-containing poly (aryl ether)s have the advantages of low monomer cost, simple synthesis process, and easy processing into membranes. In this work, a series of pyridine-containing poly (aryl ether) (PyPEK, PyPES, and PyPEF) based on different backbones (4,4′-difluorobenzophenone, 4,4′-dichlorodiphenyl sulfone, and perfluorobiphenyl) were synthesized. The effects of the backbones on the membrane swelling behavior, basic membrane properties, battery performance, and stability of the membranes were studied. The PyPEF membrane exhibited excellent battery performance (EE = 93.78 % at 80 mAcm⁻², EE = 86.24 % at 200 mAcm⁻², and EE = 80.25 % at 300 mAcm⁻²) and excellent cycling stability (3000 cycles) in VRFB, which is highly attractive for application in VRFB.

钒氧化还原液流电池（VRFBs）正在成为解决可再生能源利用中的波动性的大型储能装置。作为vrfb的关键部件，膜仍然存在成本高、电导率低、稳定性不足等问题。含吡啶聚芳醚具有单体成本低、合成工艺简单、易加工成膜等优点。本文以4,4′-二氟苯甲酮、4,4′-二氯二苯基砜和全氟联苯为骨架合成了一系列含吡啶的聚芳基醚（PyPEK、PyPES和PyPEF）。研究了骨架对膜膨胀行为、膜基本性能、电池性能和膜稳定性的影响。PyPEF膜在VRFB中表现出优异的电池性能（80 mAcm−2时EE = 93.78%， 200 mAcm−2时EE = 86.24%， 300 mAcm−2时EE = 80.25%）和优异的循环稳定性（3000次循环），具有很高的应用前景。

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引用次数: 0

Intrinsic chiral microporous polymer membranes by interfacial polymerization for precise enantioseparation 界面聚合用于对映体精确分离的本征性微孔聚合物膜

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-28 DOI: 10.1016/j.advmem.2025.100185

Zichen Li , Yumei Wang , Runhao Li , Yi Liu , Yue Sun

Enantiomers of chiral drugs frequently exhibit distinct pharmacological activities, metabolic pathways, rates of metabolism, and toxicological profiles. Consequently, the large-scale production of single enantiomers holds significant scientific and economic value. Membrane-based chiral separation presents considerable potential advantages, including low operational costs and high productivity, which have driven substantial research interest. In this study, we employed the chiral spirocyclic compound 1,1′-spirobiindane-7,7′-diol (SPINOL) as the aqueous-phase monomer to fabricate chiral polymers of intrinsic microporosity (CPIMs) membranes via interfacial polymerization (IP). The S-CPIMs/PAN composite membrane, synthesized on a polyacrylonitrile (PAN) substrate, demonstrated high enantioselectivity towards ibuprofen (PRF), achieving an enantiomeric excess (ee) of 95.4 %. Mechanistically, this selectivity originates from transition-state energy differentials within transmembrane free-energy landscapes. Importantly, large-area, defect-free chiral membranes were successfully fabricated and engineered into functional membrane modules, which demonstrated exceptional homogeneity and stable performance.

手性药物的对映体经常表现出不同的药理活性、代谢途径、代谢速率和毒理学特征。因此，单对映体的大规模生产具有重要的科学和经济价值。基于膜的手性分离具有相当大的潜在优势，包括低操作成本和高生产率，已经引起了大量的研究兴趣。本研究以手性螺环化合物1,1′-螺比烷-7,7′-二醇（SPINOL）为水相单体，通过界面聚合（IP）制备了本征微孔（CPIMs）膜的手性聚合物。在聚丙烯腈（PAN）底物上合成的S-CPIMs/PAN复合膜对布洛芬（PRF）具有较高的对映选择性，对映体过量（ee）达到95.4%。从机制上讲，这种选择性源于跨膜自由能景观中的过渡态能量差。重要的是，大面积、无缺陷的手性膜被成功地制造并工程化成功能膜模块，表现出优异的均匀性和稳定的性能。

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引用次数: 0

A novel homogeneous amphipathic PTFE/β-FeOOH nanofiber membrane for emulsion separation and photocatalytic degradation in harsh environments 一种新型均相两亲性PTFE/β-FeOOH纳米纤维膜，用于恶劣环境下的乳液分离和光催化降解

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-11-05 DOI: 10.1016/j.advmem.2025.100187

Fan Liu , Xin Wang , Jun Wu , Hongbo Yang , Baolong Li , Zihui Dong , Xutong Han , Xiaolei Li , Qinglin Huang

The efficient separation of emulsion and the simultaneous degradation of organic pollutants remain critical challenges in wastewater treatment, particularly under harsh environments. In this work, a multifunctional Polytetrafluoroethylene (PTFE)/β-FeOOH (beta-iron oxyhydroxide) nanofiber membrane was successfully fabricated via electrospinning combined with in situ mineralization. The membrane exhibited superamphiphilicity in air, underwater superoleophobicity, and superhydrophobicity in oil, with tunable surface wettability. Uniformly anchored β-FeOOH nanorods increased surface roughness and hydrophilicity while providing abundant catalytic sites, enabling synergistic oil–water emulsion separation and photo-Fenton degradation. At a low operating pressure of 0.2 bar, high permeation fluxes of 2713.29 and 2108.37 L·m⁻²·h⁻¹ were achieved for O/W (oil in water) and W/O(water in oil) emulsions, with separation efficiencies up to 99.90 %. The membrane maintained excellent chemical stability after 10 separation–regeneration cycles under pH 1 and 30 wt% NaOH conditions, retaining fluxes of 1948.47 and 2150.53 L·m⁻²·h⁻¹ with efficiencies of 99.38 % and 99.62 %, respectively. Additionally, methylene blue (MB) and rhodamine B (Rh B) removal rates remained above 98 % after five photo-Fenton cycles, and the flux recovery rate reached 97.88 %. These results demonstrate superior chemical resistance, antifouling properties, and long-term durability. Therefore, the proposed PTFE/β-FeOOH nanofiber membrane offers a promising strategy for efficient emulsion separation and organic pollutant purification in harsh environments.

乳化液的有效分离和有机污染物的同时降解仍然是废水处理的关键挑战，特别是在恶劣环境下。本文采用静电纺丝与原位矿化相结合的方法制备了多功能聚四氟乙烯(PTFE)/β-羟基氧化铁（β-FeOOH）纳米纤维膜。该膜在空气中表现出超两亲性，在水中表现出超疏油性，在油中表现出超疏水性，表面润湿性可调。均匀锚定的β-FeOOH纳米棒提高了表面粗糙度和亲水性，同时提供了丰富的催化位点，实现了油水乳液的协同分离和光- fenton降解。在0.2 bar的低操作压力下，O/W（油中油）和W/O（油中水）乳剂的渗透通量分别为2713.29和2108.37 L·m⁻²·h⁻¹，分离效率高达99.90%。在pH值为1和NaOH浓度为30 wt%的条件下，经过10次分离-再生循环后，膜保持了良好的化学稳定性，其通量为1948.47和2150.53 L·m⁻²·h⁻¹，效率分别为99.38%和99.62%。经过5次光- fenton循环后，亚甲基蓝（MB）和罗丹明B （Rh B）的去除率保持在98%以上，通量回收率达到97.88%。这些结果显示出优异的耐化学性，防污性能和长期耐久性。因此，所提出的PTFE/β-FeOOH纳米纤维膜为在恶劣环境下高效分离乳液和净化有机污染物提供了一种很有前景的策略。

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引用次数: 0

Enhanced antifouling performance of anion exchange membrane via in-situ constructed interfacial polymerization modified layer within electrodialysis stack 电渗析堆中原位构建界面聚合修饰层提高阴离子交换膜的防污性能

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-22 DOI: 10.1016/j.advmem.2025.100178

Renqiang Cao , Feng Duan , Wenyan Ji , Jingya Yin , Yujiao Li , Shaoyuan Shi , Yuping Li , Hongbin Cao

Organic fouling of anion exchange membranes (AEMs) severely limits the large-scale application of electrodialysis (ED) in industrial wastewater resource recovery, primarily due to the compromised engineering feasibility of ex-situ modifications requiring stack disassembly. To address this, we developed an efficient strategy enabling in-situ directional construction of an interfacial polymerization (IP) modified layer within ED stacks, significantly enhancing AEM antifouling performance. This approach leverages direct-current electric field to directionally deposit tannic acid (TA) onto AEM surfaces, followed by injection of trimesoyl chloride (TMC) to initiate polymerization, enabling in-situ constructing of IP-modified layers. Optimized conditions yielded [email protected] g/L-AEM (TMC: 1.0 g/L) with maximized esterification degree and surface charge density (−31.25 mV), exhibiting superior antifouling performance. In sodium dodecyl sulfonate (SDS) fouling tests, [email protected] g/L maintained 24.29 % higher desalination rate than pristine membrane stacks at 120 min and exhibited exceptional operational stability (>1200 min). Mechanistic analysis revealed that the in-situ IP-modified layer synergistically suppresses foulant aggregation in the diffusion boundary layer through enhanced surface negative charge density and stability compared to solely electrodeposited TA. This work provides a scalable approach for in-situ construction of modified layers within ED stacks.

阴离子交换膜（AEMs）的有机污染严重限制了电渗析（ED）在工业废水资源回收中的大规模应用，主要是因为需要拆卸堆的非原位改性的工程可行性受到影响。为了解决这个问题，我们开发了一种有效的策略，可以在ED堆栈中原位定向构建界面聚合（IP）修饰层，显著提高AEM的防污性能。该方法利用直流电场将单宁酸（TA）定向沉积到AEM表面，然后注入三甲基氯（TMC）引发聚合，从而实现原位构建ip修饰层。优化后得到的[email protected] g/L- aem （TMC: 1.0 g/L）具有最大的酯化度和表面电荷密度（- 31.25 mV），具有较好的防污性能。在十二烷基磺酸钠（SDS）污染试验中，[email protected] g/L在120分钟内保持的脱盐率比原始膜堆高24.29%，并表现出优异的运行稳定性（>；1200分钟）。机理分析表明，与单纯电沉积TA相比，原位ip修饰层通过提高表面负电荷密度和稳定性，协同抑制了扩散边界层中的杂质聚集。这项工作提供了一种可扩展的方法，用于在ED堆栈中原位构建修改层。

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引用次数: 0

Fluorinated polyamide-based ion-solvating membranes for long-cycle quasi-solid-state lithium batteries 长周期准固态锂电池用氟化聚酰胺离子溶剂化膜

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-23 DOI: 10.1016/j.advmem.2025.100179

Wenjing Ma , Zixin Lv , Xiaowei Zhou , Junhao Xin , Huifeng Wang , Zhiguang Zhang , Xiuling Chen , Nanwen Li

Membrane-based solid polymer electrolytes (SPEs) have emerged as promising candidates for enhancing the energy density and safety of lithium metal battery (LMBs), owing to their superior Li-salt dissociation capability, excellent lithium metal anode compatibility, and cost-effectiveness. However, conventional SPEs often suffer from limited thermal stability, low ionic conductivity, and inadequate mechanical strength. In this study, we developed a novel polymeric membrane incorporating CF₃ and amide functional groups, which was subsequently imbibed with lithium salt and solvents to form a homogeneous ternary electrolyte system of polymer/solvent/lithium-ion solvated membranes (ISMs). The resulting ion solvated membranes exhibit remarkable mechanical properties, high ionic conductivity and high security. The amide groups effectively anchor anions and coordinate with Li⁺, while the strong electron-withdrawing effect of -CF₃ groups facilitates the formation of efficient Li ⁺ transport channels. Density functional theory (DFT) calculations confirmed that lithium ions preferentially bind to the amide and -CF₃ groups rather than solvent molecules, The binding energy between co-FPA and Li⁺ was calculated to be −3.40 eV, indicating a strong interaction. ISMs demonstrate outstanding electrochemical performance, achieving an ionic conductivity of 1.845 × 10⁻⁴ S cm⁻¹ and a high Li ⁺ transference number of 0.66. When assembled into Li/co-FPA-50/LFP cells, the system maintains 93 % capacity retention after 200 cycles at 0.5C (initial capacity: 158.6 mAh g⁻¹). The ISM-based quasi-solid-state lithium batteries exhibit exceptional long-term cycling stability over 1000 cycles. This work presents an innovative approach for designing high-performance ion solvated membranes, addressing critical challenges in the development of safe and stable lithium metal batteries.

膜基固体聚合物电解质（spe）由于其优异的锂盐解离能力、优异的锂金属阳极兼容性和成本效益，已成为提高锂金属电池（lmb）能量密度和安全性的有希望的候选者。然而，传统的spe通常存在热稳定性有限、离子电导率低和机械强度不足的问题。在本研究中，我们开发了一种含有CF3和酰胺官能团的新型聚合物膜，随后将其与锂盐和溶剂一起吸收，形成聚合物/溶剂/锂离子溶剂化膜（ISMs）的均相三元电解质体系。所得离子溶剂化膜具有优异的力学性能、高离子电导率和高安全性。酰胺基团有效地锚定阴离子并与Li+配位，而-CF3基团的强吸电子效应有利于形成高效的Li+输运通道。密度泛函理论（DFT）计算证实，锂离子优先结合酰胺和-CF3基团而不是溶剂分子，co-FPA与Li+之间的结合能为- 3.40 eV，表明相互作用强。ISMs具有优异的电化学性能，离子电导率为1.845 × 10−4 S cm−1，Li +迁移数为0.66。当组装成Li/co-FPA-50/LFP电池时，系统在0.5C下循环200次后保持93%的容量保持（初始容量：158.6 mAh g−1）。基于ism的准固态锂电池表现出超过1000次循环的长期稳定性。这项工作提出了一种设计高性能离子溶剂化膜的创新方法，解决了开发安全稳定的锂金属电池的关键挑战。

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引用次数: 0