Journal of Membrane Science最新文献

{"title":"Branched poly(terphenyl trifluoroacetophenone piperidone) membranes with dual-proton conductor assist for enhancing fuel cell performance operation in high-temperature","authors":"Yeyang Li ,&nbsp;Zhipeng Xu ,&nbsp;Wenhui Shi ,&nbsp;Meng Wang ,&nbsp;Zhihao Lin ,&nbsp;Daohui He ,&nbsp;Yangke Pan ,&nbsp;Junbin Liao ,&nbsp;Edison Huixiang Ang ,&nbsp;Jiangnan Shen","doi":"10.1016/j.memsci.2025.124127","DOIUrl":"10.1016/j.memsci.2025.124127","url":null,"abstract":"<div><div>Achieving an optimal balance between phosphoric acid (PA) uptake and membrane dimensional stability remains a critical challenge for the electrochemical performance and long-term durability of PA-doped membranes in high-temperature proton exchange membrane fuel cells (HT-PEMFCs). Herein, dual proton conductor HT-PEMs were prepared by PA immersion of diethylenetriamine penta-(methylene phosphonic acid) (DETPMP) doped branched poly(triphenyl trifluoroacetophenone piperidone) composite membranes. The unique benzimidazole-functionalized side-chains, combined with the branched rigid twisted polymer backbone, create a robust hydrogen bonding network that facilitates efficient proton transport. By tailoring the polymer structure, the optimized dual-proton conductor membrane, b-PTTP-BIm-DP₂₀, achieves a lower PA uptake (&lt;130 %), while exhibiting outstanding proton conductivity (168.5 mS cm⁻¹), excellent dimensional stability, and sufficient PA retention. The PA-doped b-PTTP-BIm-DP₂₀ based HT-PEMFCs delivers a remarkable peak power density of 835.1 mW cm⁻² (200 °C) under backpressure-free and non-humidified. Additionally, the PA-doped b-PTTP-BIm-DP₂₀ membrane demonstrates exceptional durability, with a voltage decay rate of only 0.556 mV h⁻¹ at 160 °C over 100 h of continuous operation. This work highlights the potential of branched polymer designs incorporating dual-proton conductors to achieve a synergistic balance between membrane dimensional stability and electrochemical performance, offering valuable insights for the development of advanced HT-PEMFC membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124127"},"PeriodicalIF":8.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850495","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":"Ultrathin amphiphilic membranes polymerized from hydrophobic terpenoids and hydrophilic polyamines for versatile organic solvent nanofiltration","authors":"Meijie Wang ,&nbsp;Yunzhuo Xu ,&nbsp;Jiamei Sun ,&nbsp;Dai Shi ,&nbsp;Youqing Tian ,&nbsp;Hanyang Liu ,&nbsp;Beili Lu ,&nbsp;Lirong Tang ,&nbsp;Jianhua Lv ,&nbsp;Xingzhong Cao ,&nbsp;Biao Huang ,&nbsp;Xinda You","doi":"10.1016/j.memsci.2025.124115","DOIUrl":"10.1016/j.memsci.2025.124115","url":null,"abstract":"<div><div>Ultrathin membranes with fast solvent transport are promising in organic solvent nanofiltration. However, achieving high permeance for both polar and non-polar solvents remain challenging. Here we report ultrathin amphiphilic membranes (UAPMs) polymerized from hydrophobic terpenoid molecules and hydrophilic polyamines that enable fast and versatile solvent transport. The terpenoid carboxylic acid (TCA) in the organic phase react with polyethyleneimine (PEI) in the aqueous phase at the liquid-liquid interface, during which the glutaraldehyde is added into the aqueous phase to enhance the crosslinking of polymeric network and thus forming UAPMs. Regulating the ratio of hydrophilic to hydrophobic components allow for the precise manipulation of the surface polarity of UAPMs, rendering affinity to both polar and non-polar organic solvents. The increased PEI/TCA ratio also provides more amine sites to bind with the carboxylic monomers and thus generating denser and thicker membranes. The optimized UAPM demonstrates high permeance values of 175.9 L m⁻² h⁻¹ bar⁻¹ for polar ethanol and 116.5 L m⁻² h⁻¹ bar⁻¹ for non-polar <em>n</em>-hexane, with a molecular weight cut-off of 591 Da, which achieves 96.4 % rejection of Reactive Red in ethanol and 94.8 % rejection of Chlorophyll in <em>n</em>-hexane. Our structural design of UAPMs may pave a new avenue for engineering high-performance molecular-separation membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124115"},"PeriodicalIF":8.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847842","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":"Rapid protein fractionation with tunable amphiphilic isoporous block copolymer membranes","authors":"Zhenzhen Zhang ,&nbsp;Md. Mushfequr Rahman ,&nbsp;Barbara Bajer ,&nbsp;Volker Abetz","doi":"10.1016/j.memsci.2025.124114","DOIUrl":"10.1016/j.memsci.2025.124114","url":null,"abstract":"<div><div>Isoporous block copolymer membranes have emerged as a promising platform for high-performance protein separation. However, it remains a significant challenge to achieve a robust protein fractionation system with both high selectivity and permeance. Herein, we established the tunable isoporous membranes derived from the amphiphilic polystyrene-<em>block</em>-poly(2-hydroxyethyl methacrylate) (PS-<em>b</em>-PHEMA) block copolymer. The membrane characteristics, i.e., pore size, surface porosity, hydrophilicity, and surface charge, were tuned by varying the PS-<em>b</em>-PHEMA molecular weight and composition. The protein separation performance of the designed tunable membranes was thoroughly investigated under application-relevant cross-flow mode by varying the cross-flow rate. Different mixed protein systems, including bovine serum albumin (BSA) and lysozyme (LZ), β-lactoglobulin (LG) and BSA, hemoglobin (HB) and BSA, were tested in a readily accessible and stable physiological buffer at pH = 7.4. The separation behavior is governed by the synergistic effects of size sieving, electrostatic interactions, and competition among the permeating proteins. The prepared membranes achieved an unprecedented selectivity of 88.8 and a high permeance of 67 L m⁻² h⁻¹ bar⁻¹ for the LZ/BSA protein mixture, overcoming the conventional trade-off between permeance and selectivity.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124114"},"PeriodicalIF":8.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847838","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":"Electrostatic molecular engineering of honeycomb-like MXene membranes with ultra-short hydrophilic channels for high-efficiency dye/salt separation","authors":"Peng Zu ,&nbsp;Haoning Li ,&nbsp;Xiao Huang ,&nbsp;Guangming Yan ,&nbsp;Xiujing Xing ,&nbsp;Gang Zhang","doi":"10.1016/j.memsci.2025.124118","DOIUrl":"10.1016/j.memsci.2025.124118","url":null,"abstract":"<div><div>In recent years, research in the field of dye/salt separation has been significantly progressed. However, issues such as poor permeability and low dye/salt separation factor remain unsolved. In response, we have developed a molecular engineering strategy to construct a MXene-based membrane with record-breaking performance. Crystal Violet (CV) molecules were initially used as electrostatic media to precisely adjust the interlayer spacing and orientation of MXene, resulting in the formation of an ordered honeycomb-like structure featuring three-dimensional interconnected channels. This configuration greatly shortened the pathways compared to traditional mass transfer channels. Theoretical calculations indicate that the CV molecules primarily engaged in strong interactions with the oxygen-containing functional groups on the surfaces of MXene layers, effectively regulating the hydrophilicity and steric hindrance effect within the channels. By introducing ECP 600JD Carbon (EC) particles as an intermediate layer, the self-defects of the composite membrane in the ultra-thin state were significantly repaired. Additionally, ultra-short hydrophilic mass transfer channels were established. As a consequence, Large Layered MXene@CV Ultra-thin Membrane/EC (LMCU/C) was successfully prepared, exhibiting excellent dye/salt separation performance and high permeability. This membrane demonstrated a permeance of 540.8 LMH/bar for CR/NaCl mixed solution, achieved a dye/salt separation factor of approximately 47, and maintained operational stability for 10 h, outperforming the majority of existing membranes. This work can provide fresh insights into strategies for designing membrane structures through molecular engineering.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124118"},"PeriodicalIF":8.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850838","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":"Polyethersulfone-modulated Matrimid®-derived carbon molecular sieve membranes for enhanced C3H6/C3H8 separation","authors":"Fake Sun,&nbsp;Zeyuan Gao,&nbsp;Yongchao Sun,&nbsp;Yijun Liu,&nbsp;Jianyu Guan,&nbsp;Hongjin Li,&nbsp;Tianyou Li,&nbsp;Gaohong He,&nbsp;Canghai Ma","doi":"10.1016/j.memsci.2025.124104","DOIUrl":"10.1016/j.memsci.2025.124104","url":null,"abstract":"<div><div>Polymer-derived carbon molecular sieve (CMS) membranes hold significant potentials for propylene/propane (C₃H₆/C₃H₈) separation; however, further enhancement of their molecular sieving properties remains a critical challenge. In this study, we present a novel approach to regulating the pore structure of CMS membranes by incorporating the rubbery polyethersulfone (PES) into the Matrimid® precursor to fabricate CMS membranes. The incorporation of PES during pyrolysis creates voids between Matrimid® molecular chains, increasing the chain <em>d</em>-spacing and the content of ultramicropores, significantly enhancing the C₃H₆/C₃H₈ separation performance of the CMS membranes. As the PES content in the precursor membrane increases, the rising content of ultramicropores leads to improved C₃H₆/C₃H₈ selectivity, along with a minor increase in gas permeability. Notably, the 60 %Matrimid®+40 %PES-550 CMS membrane displays a C₃H₆ permeability of 70.3 Barrer with a C₃H₆/C₃H₈ selectivity of 21.4, representing increases of 194 % and 188 %, respectively, compared to Matrimid®-550 and exceeding the C₃H₆/C₃H₈ separation upper bound. Furthermore, under mixed gas separation conditions with a 50/50 (mol%) C₃H₆/C₃H₈ feed, this membrane exhibited a C₃H₆ permeability of 47.6 Barrer with a C₃H₆/C₃H₈ selectivity of 18.3, also surpassing the mixed gas upper bound for C₃H₆/C₃H₈ separation. The design principle of CMS membranes in this work provides a new approach for the preparation of high-performance CMS membranes, with the potential for separating the challenging C₃H₆/C₃H₈ mixture.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124104"},"PeriodicalIF":8.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847840","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":"Fouling resistant nanofiltration membranes from self-assembled quaternary ammonium monomers","authors":"Junkyu Hwang,&nbsp;Na Kyung Kim,&nbsp;Chinedum O. Osuji","doi":"10.1016/j.memsci.2025.124101","DOIUrl":"10.1016/j.memsci.2025.124101","url":null,"abstract":"<div><div>Nanofiltration membranes with uniform and tunable pore sizes are highly sought after for wastewater treatment. Macromolecular organics and oily species are prevalent in wastewater streams and are challenging drivers of fouling that lead to decreased membrane performance. Efforts to reduce fouling therefore remain of interest in the development of new nanofiltration membranes. We report that nanostructured thin film composite membranes fabricated from a self-assembled mesophase of a polymerizable surfactant [2-(acryloyloxy)ethyl]dimethyl tetradecyl ammonium bromide (AETDAB) demonstrate excellent fouling resistance to protein solutions and oil-in-water emulsions. AETDAB lyotropic mesophases were cast atop a support membrane and crosslinked, forming hexagonally packed polymer cylinders arrayed in the plane of the membrane. The evenly spaced cylinders create channels with diameters of ∼1 nm that represent the transport limiting dimension for the system. The composite membranes showed outstanding antifouling characteristics, retaining ∼95 % of permeance over a 72-h period while completely rejecting a model organic foulant, bovine serum albumin (BSA). The membrane also demonstrated similarly strong fouling resistance during the filtration of oil-in-water emulsions, retaining ∼95 % of its permeance. The fouling resistance highlight the membrane's potential to be used for challenging nanofiltration applications, while retaining its performance over long periods of time.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124101"},"PeriodicalIF":8.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844644","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":"The membranes of V–Pd alloys: study of ultrapure hydrogen extraction from gas mixtures","authors":"S.R. Kuzenov ,&nbsp;V.N. Alimov ,&nbsp;A.O. Busnyuk ,&nbsp;I.V. Bobylev ,&nbsp;E. Yu Peredistov ,&nbsp;A.I. Livshits","doi":"10.1016/j.memsci.2025.124099","DOIUrl":"10.1016/j.memsci.2025.124099","url":null,"abstract":"<div><div>The membranes of bcc V–Pd alloys are promising alternative to commercial membranes from Pd-based alloys. An optimum content of Pd in the alloy was found as 5.1 at% and 7.0 at% for the operations with the gas mixtures contenting H₂ at 0.66 MPa and 9.0 MPa respectively. The thin-walled tubular membranes made from these alloys and electrolessly plated inside and outside with Pd served as samples for the experimental research. The effects of gaseous products of CH₄ steam-and autothermal conversion on the membrane throughput and on the hydrogen extraction ratio were studied with the binary mixtures of 0.8H₂+0.2<em>X</em> (<em>X</em> = CO, CO₂, CH₄, N₂) as well as with 5-and 6-component mixtures (including steam). The reduction in hydrogen throughput caused by CO, CO₂ and CH₄ was clearly observed, but was relatively small and completely reversible. The tubular membranes of both alloys allowed to extract ≈80 % of hydrogen from the multi-component mixtures at their pressure 1.2 MPa, providing the density of hydrogen permeation flux of ≈0.5 scc/(cm²s) and total hydrogen flux exceeding 20 scc/s. It was found with mass analytical method that the hydrogen selectivity of V–Pd alloy membrane with respect to He (H₂/He) is no less than 3⋅10¹⁰.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124099"},"PeriodicalIF":8.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830179","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":"Co-deposition enhances electrodialysis of thin film composite (TFC) membranes for efficient separation of Cl−/SO42-","authors":"Penghao Hao ,&nbsp;Xueqing Wang ,&nbsp;Xue Yu ,&nbsp;Chunyan Wang ,&nbsp;Yinuo Zhang ,&nbsp;Yang Liu ,&nbsp;Ming Tan ,&nbsp;Yang Zhang","doi":"10.1016/j.memsci.2025.124094","DOIUrl":"10.1016/j.memsci.2025.124094","url":null,"abstract":"<div><div>The increasing demand for monovalent anion separation necessitates the development of highly efficient and cost-effective monovalent selective membrane. In this study, thin-film composite (TFC) membranes were fabricated via a co-deposition method and applied in an electrodialysis system for Cl⁻/SO₄²⁻ separation. The high density of amine groups in the membrane enhances ion exchange performance, while the dense cross-linked structure and residual carboxyl groups formed after the interfacial polymerization (IP) reaction restrict SO₄²⁻ transport due to limited pore size and strong electrostatic repulsion. In contrast, the membrane exhibits high permeability for Cl⁻, enabling efficient separation of the two anions. The TFC membrane prepared by IP followed by co-deposition of 0.2 wt% Polyethyleneimine (PEI) and 0.2 wt% dopamine (DA) demonstrated excellent separation performance. At a current density of 100 A m⁻², the flux of Cl⁻ was 24.62 × 10⁻⁷(mol·cm⁻²·min⁻¹), while the flux of SO₄²⁻ was only 0.31 × 10⁻⁷(mol·cm⁻²·min⁻¹), with a selection factor of 80.5, the selection factor is 17 times higher than that of commercial monovalent anion exchange membranes. The prepared TFC membranes exhibited excellent stability, maintaining consistent ionic fluxes of 23.79 × 10⁻⁷ mol cm⁻²·min⁻¹ for Cl⁻ and 0.27 × 10⁻⁷ mol cm⁻²·min⁻¹ for SO₄²⁻, respectively. Seven consecutive cycling experiments proves good stability of the membrane. This demonstrates their great potential for industrial applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124094"},"PeriodicalIF":8.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825894","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":"Improvement of H2/CO2 selectivity at high pressure and temperature of benzimidazole-linked hybrid membranes via post treatment","authors":"Jiao Zhu ,&nbsp;Zhecheng Guo ,&nbsp;Zhi Wang ,&nbsp;Xinlei Liu","doi":"10.1016/j.memsci.2025.124096","DOIUrl":"10.1016/j.memsci.2025.124096","url":null,"abstract":"<div><div>H₂-selective membranes with high performance at high pressure and temperature are required. Here, we prepared high performance membranes for H₂/CO₂ separation by post treatment (in terms of crosslinking and thermal treatment) of CP-2-BILP molecular-scale hybrid membranes. Post crosslinking with TMC generated new amide linkages and compacted the membranes. So, the CP-2-BILP-0.4 %TMC membranes had an improved H₂/CO₂ selectivity of 65.5 (corresponding H₂ permeance of 35.6 GPU) at 11 bar (423 K) and an improved H₂/CO₂ selectivity of 41.7 (corresponding H₂ permeance of 515 GPU) at 573 K (1 bar). Post thermal treatment promoted further reaction of monomers and further formation of benzimidazole rings, and also compacted the membranes. Given by the synergistic effect of post crosslinking and thermal treatment, the CP-2-BILP-0.4 %TMC-423K membranes demonstrated a good pressure resistance. When the feed pressure was increased from 1 bar to 11 bar, the H₂/CO₂ selectivity of the membranes only decreased 10.2 % (74.5–66.9) and the H₂ permeance only slightly dropped (48.3 GPU to 44.1 GPU). The good H₂/CO₂ separation performance at high pressure and temperature, as well as good stability, demonstrated their potential for H₂ purification under industrial relevant process.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124096"},"PeriodicalIF":8.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825883","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":"Cellulose-based membrane with ion regulating function for high-safety lithium-ion battery at low temperature enabled by grafting structural engineering","authors":"Qi He ,&nbsp;Kuo Li ,&nbsp;Tu Ran ,&nbsp;Shuhao Ruan ,&nbsp;Xiaofei Yang ,&nbsp;Yi Cheng ,&nbsp;Haisong Wang","doi":"10.1016/j.memsci.2025.124093","DOIUrl":"10.1016/j.memsci.2025.124093","url":null,"abstract":"<div><div>The separator plays an important role in determining the performance and cost of lithium-ion battery (LIBs). Biomass cellulose has been considered as a promising candidate to substitute the petroleum-based materials due to its biodegradability, high thermal stability and favorable wettability. However, the physical entanglement, hydrogen bonds and van der Waals force between the cellulose fibers results in small porosity and pore size, which make obstacles for electrolytes uptaking and Li⁺ migrating. Here the mesoporous cellulose-based membrane with ions regulating effect was designed by an approach of grafting structural engineering. The cross linking between the polymer with big molecules and the cellulose could effectively alleviate the aggregation of the cellulose fibers with the effect of steric hindrance. The grafted polymer with abundant –NH₂ functional groups have higher binding energy with the anions in the electrolyte as proved by DFT (density functional theoretical) calculation, which can restrict the movement of anions and accelerate Li⁺ transfer. The results indicate that the membrane has fast Li⁺ conductivity of 2.069 mS cm⁻¹. As separator for LIBs, it exhibits wide electrochemical stability window (up to 4.8 V) and enhanced rate/cycling performance even at extra low temperature (−30^oC).</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"727 ","pages":"Article 124093"},"PeriodicalIF":8.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825884","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}