{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T18:55:42Z","timestamp":1783104942560,"version":"3.54.6"},"reference-count":64,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2024,8,30]],"date-time":"2024-08-30T00:00:00Z","timestamp":1724976000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22269005"],"award-info":[{"award-number":["22269005"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["[2019]1226"],"award-info":[{"award-number":["[2019]1226"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["GZNUD [2017]1"],"award-info":[{"award-number":["GZNUD [2017]1"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Science and Technology Project of Guizhou Province","award":["22269005"],"award-info":[{"award-number":["22269005"]}]},{"name":"Science and Technology Project of Guizhou Province","award":["[2019]1226"],"award-info":[{"award-number":["[2019]1226"]}]},{"name":"Science and Technology Project of Guizhou Province","award":["GZNUD [2017]1"],"award-info":[{"award-number":["GZNUD [2017]1"]}]},{"name":"Fundamental Research Funds of Guizhou Normal University","award":["22269005"],"award-info":[{"award-number":["22269005"]}]},{"name":"Fundamental Research Funds of Guizhou Normal University","award":["[2019]1226"],"award-info":[{"award-number":["[2019]1226"]}]},{"name":"Fundamental Research Funds of Guizhou Normal University","award":["GZNUD [2017]1"],"award-info":[{"award-number":["GZNUD [2017]1"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Four non-fluorinated sulfonimide polyamides (s-PAs) were successfully synthesized and a series of membranes were prepared by blending s-PA with polyvinylidene fluoride (PVDF) to achieve high-methanol-permeation resistivity for direct methanol fuel cell (DMFC) applications. Four membranes were fabricated by blending 50 wt% PVDF with s-PA, named BPD-101, BPD-102, BPD-111 and BPD-211, respectively. The s-PA\/PVDF membranes exhibit high methanol resistivity, especially for the BPD-111 membrane with methanol resistivity of 8.13 \u00d7 10\u22127 cm2\/s, which is one order of magnitude smaller than that of the Nafion 117 membrane. The tensile strength of the BPD-111 membrane is 15 MPa, comparable to that of the Nafion 117 membrane. Moreover, the four membranes also show good thermal stability up to 230 \u00b0C. The BPD-x membrane exhibits good oxidative stability, and the measured residual weights of the BPD-111 membrane are 97% and 93% after treating in Fenton\u2019s reagent (80 \u00b0C) for 1 h and 24 h, respectively. By considering the mechanical, thermal and dimensional properties, the polyamide proton-exchange membrane exhibits promising application potential for direct methanol fuel cells.<\/jats:p>","DOI":"10.3390\/polym16172480","type":"journal-article","created":{"date-parts":[[2024,8,30]],"date-time":"2024-08-30T10:54:11Z","timestamp":1725015251000},"page":"2480","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A High-Methanol-Permeation Resistivity Polyamide-Based Proton Exchange Membrane Fabricated via a Hyperbranching Design"],"prefix":"10.3390","volume":"16","author":[{"given":"Liying","family":"Ma","sequence":"first","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongxia","family":"Song","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofei","family":"Gong","sequence":"additional","affiliation":[{"name":"Kaili No. 8 Middle School, 70 Qingjiang Road, Kaili 556000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lu","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiangning","family":"Gong","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhijiao","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Shen","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manqi","family":"Gu","sequence":"additional","affiliation":[{"name":"School of Chemistry and Materials Science, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,30]]},"reference":[{"key":"ref_1","first-page":"106","article-title":"Study on the Concentration Inversion of NO & NO2 Gas from the Vehicle Exhaust Based on Weighted PLS","volume":"7","author":"Kai","year":"2017","journal-title":"Sci. Res. Publ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3167","DOI":"10.1039\/c0ee00558d","article-title":"A review on non-precious metal electrocatalysts for PEM fuel cells","volume":"4","author":"Chen","year":"2011","journal-title":"Energy Environ. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2172","DOI":"10.1039\/c1cs15228a","article-title":"Metal\u2013air batteries: From oxygen reduction electrochemistry to cathode catalysts","volume":"41","author":"Cheng","year":"2012","journal-title":"Chem. Soc. Rev."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"26468","DOI":"10.1016\/j.ijhydene.2022.03.021","article-title":"A green hydrogen energy storage concept based on parabolic trough collector and proton exchange membrane electrolyzer\/fuel cell: Thermodynamic and exergoeconomic analyses with multi-objective optimization","volume":"47","author":"Razmi","year":"2022","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"772","DOI":"10.1016\/j.ijhydene.2021.10.055","article-title":"A novel process simulation model for hydrogen production via reforming of biomass gasification tar","volume":"47","author":"Shamsi","year":"2022","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"25650","DOI":"10.1016\/j.ijhydene.2021.05.082","article-title":"Electrolyzer-fuel cell combination for grid peak load management in a geothermal power plant: Power to hydrogen and hydrogen to power conversion","volume":"46","author":"Alirahmi","year":"2021","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Selim, A., Szijj\u00e1rt\u00f3, G.P., Rom\u00e1nszki, L., and Tompos, A. (2022). Development of WO3-Nafion Based Membranes for Enabling Higher Water Retention at Low Humidity and Enhancing PEMFC Performance at Intermediate Temperature Operation. Polymers, 14.","DOI":"10.3390\/polym14122492"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"4870","DOI":"10.1039\/c3cp50296a","article-title":"Advances in proton-exchange membranes for fuel cells: An overview on proton conductive channels (PCCs)","volume":"15","author":"Wu","year":"2013","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1016\/j.jpowsour.2016.04.067","article-title":"Performance, methanol tolerance and stability of Fe-aminobenzimidazole derived catalyst for direct methanol fuel cells","volume":"319","author":"Serov","year":"2016","journal-title":"J. Power Sources"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/j.memsci.2009.09.041","article-title":"Sulfonated poly(ether ether ketone)-based silica nanocomposite membranes for direct ethanol fuel cells","volume":"346","author":"Roelofs","year":"2010","journal-title":"J. Membr. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"6237","DOI":"10.1016\/j.ijhydene.2021.11.249","article-title":"A robust methanol concentration sensing technique in direct methanol fuel cells and stacks using cell dynamics","volume":"47","author":"Na","year":"2022","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"6589","DOI":"10.1021\/acs.iecr.9b06813","article-title":"Enhancing the Performance of Poly(phthalazinone ether ketone)-Based Membranes Using a New Type of Functionalized TiO2 with Superior Proton Conductivity","volume":"59","author":"Beydaghi","year":"2020","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"117484","DOI":"10.1016\/j.memsci.2019.117484","article-title":"Covalent grafting of polystyrene sulfonic acid on graphene oxide nanoplatelets to form a composite membrane electrolyte with sulfonated poly(ether ether ketone) for direct methanol fuel cells","volume":"595","author":"Shukla","year":"2020","journal-title":"J. Membr. Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/j.jpowsour.2015.10.054","article-title":"A high performance polyamide-based proton exchange membrane fabricated via construction of hierarchical proton conductive channels","volume":"302","author":"Ma","year":"2016","journal-title":"J. Power Sources"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/j.jpowsour.2006.01.030","article-title":"A review of anode catalysis in the direct methanol fuel cell","volume":"155","author":"Liu","year":"2006","journal-title":"J. Power Sources"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"10850","DOI":"10.1039\/C6TA03485C","article-title":"Improvement of direct methanol fuel cell performance using a novel mordenite barrier layer","volume":"4","author":"Dawsona","year":"2016","journal-title":"J. Mater. Chem. A"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1016\/j.renene.2019.01.107","article-title":"Improvement of sulfonated poly(ether ether ketone)\/Y zeolite-SO3H via organo-functionalization method for direct methanol fuel cell","volume":"138","author":"Chuesutham","year":"2019","journal-title":"Renew. Energy"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"399","DOI":"10.1002\/fuce.200700066","article-title":"Influence of Methanol Crossover on the Fuel Utilization of Passive Direct Methanol Fuel Cell","volume":"8","author":"Lai","year":"2008","journal-title":"Fuel Cells"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"3138","DOI":"10.1016\/j.ijhydene.2018.12.019","article-title":"High power direct methanol fuel cell for mobility and portable applications","volume":"44","author":"Goor","year":"2019","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1007\/s00289-004-0310-0","article-title":"Novel Nafion\/Hydroxyapatite composite membrane with high crystallinity and low methanol crossover for DMFCs","volume":"53","author":"Park","year":"2004","journal-title":"Polym. Bull."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1087","DOI":"10.1016\/j.rser.2016.09.002","article-title":"Approaches to overcome the barrier issues of passive direct methanol fuel cell\u2014Review","volume":"67","author":"Munjewar","year":"2017","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"5669","DOI":"10.1021\/cm060841q","article-title":"Nafion\/Zeolite Nanocomposite Membrane by in Situ Crystallization for a Direct Methanol Fuel Cell","volume":"18","author":"Chen","year":"2006","journal-title":"Chem. Mater."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"196","DOI":"10.1016\/j.electacta.2017.10.002","article-title":"Evaluation of sulfonated polysulfone\/zirconium hydrogen phosphate composite membranes for direct methanol fuel cells","volume":"256","author":"Ozden","year":"2017","journal-title":"Electrochim. Acta"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"21501","DOI":"10.1016\/j.ijhydene.2017.01.188","article-title":"Enhancement of direct methanol fuel cell performance through the inclusion of zirconium phosphate","volume":"42","author":"Ozden","year":"2017","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2658","DOI":"10.1016\/j.ijhydene.2016.06.215","article-title":"Investigation of Nafion based composite membranes on the performance of DMFCs","volume":"42","author":"Ercelik","year":"2017","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/S0378-7753(99)00302-X","article-title":"A review of the state-of-the-art of the methanol crossover in direct methanol fuel cells","volume":"84","author":"Heinzel","year":"1999","journal-title":"J. Power Sources"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"920","DOI":"10.1016\/j.applthermaleng.2017.12.046","article-title":"Modeling of passive vapor feed alkaline membrane direct methanol fuel cell","volume":"131","author":"Xie","year":"2018","journal-title":"Appl. Therm. Eng."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/j.memsci.2017.06.081","article-title":"Surfactant templated nanoporous carbon-Nafion hybrid membranes for direct methanol fuel cells with reduced methanol crossover","volume":"541","author":"Parthiban","year":"2017","journal-title":"J. Membr. Sci."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"186","DOI":"10.1016\/j.memsci.2016.04.068","article-title":"Surface-modified porous membranes with electrospun Nafion\/PVA fibres for non-aqueous redox flow battery","volume":"514","author":"Bang","year":"2016","journal-title":"J. Membr. Sci."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"17102","DOI":"10.1016\/j.ijhydene.2016.07.128","article-title":"A bi-functional polymeric nano-sieve Nafion composite membrane: Improved performance for direct methanol fuel cell applications","volume":"41","author":"Cai","year":"2016","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"14421","DOI":"10.1016\/j.ijhydene.2015.04.075","article-title":"Sulfonated poly(phenylsulfone)\/fluorinated polybenzoxazole nanofiber composite membranes for proton exchange membrane fuel cells","volume":"40","author":"Jin","year":"2015","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"4759","DOI":"10.1021\/acs.chemrev.6b00586","article-title":"Hydrocarbon-Based Polymer Electrolyte Membranes: Importance of Morphology on Ion Transport and Membrane Stability","volume":"117","author":"Shin","year":"2017","journal-title":"Chem. Rev."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"21530","DOI":"10.1016\/j.ijhydene.2017.01.004","article-title":"Reduction of methanol crossover in a flowing electrolyte-direct methanol fuel cell","volume":"42","author":"Colpan","year":"2017","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"3222","DOI":"10.1016\/j.ijhydene.2016.10.122","article-title":"Transient analysis of passive vapor-feed DMFC fed with neat methanol","volume":"42","author":"Guo","year":"2017","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"3125","DOI":"10.1021\/ef100034x","article-title":"Poly(3,4-ethylenedioxythiphene) (PEDOT)-Modified Anodes: Reduced Methanol Crossover in Direct Methanol Fuel Cells","volume":"24","author":"Stanis","year":"2010","journal-title":"Energy Fuels"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/j.memsci.2012.02.045","article-title":"Poly(arylene ether sulfone) proton exchange membranes with flexible acid side chains","volume":"405\u2013406","author":"Wang","year":"2012","journal-title":"J. Membr. Sci."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1016\/j.jtice.2010.07.003","article-title":"Acid\u2013base blend membranes based on Nafion\u00ae\/aminated SPEEK for reducing methanol permeability","volume":"42","author":"Tsai","year":"2011","journal-title":"J. Taiwan Inst. Chem. Eng."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"352","DOI":"10.1016\/j.electacta.2012.03.125","article-title":"Preparation and characterization of block copolymers containing multi-sulfonated unit for proton exchange membrane fuel cell","volume":"86","author":"Seo","year":"2012","journal-title":"Electrochim. Acta"},{"key":"ref_39","first-page":"2094","article-title":"Sandwiching h-BN Monolayer Films between Sulfonated Poly(ether ether ketone) and Nafion for Proton Exchange Membranes with Improved Ion Selectivity","volume":"13","author":"Liu","year":"2019","journal-title":"ACS Nano"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"100427","DOI":"10.1016\/j.mtener.2020.100427","article-title":"Highly selective SPEEK\/ENR blended polymer electrolyte membranes for direct methanol fuel cell","volume":"17","author":"Jaafar","year":"2020","journal-title":"Mater. Today Energy"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"6556","DOI":"10.1039\/C4CC09420D","article-title":"Towards Neat Methanol Operation of Direct Methanol Fuel Cells: A Novel Self-Assembled Proton Exchange Membrane","volume":"51","author":"Li","year":"2015","journal-title":"Chem. Commun."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"79593","DOI":"10.1039\/C6RA17477A","article-title":"Fabrication of a polymer electrolyte membrane with uneven side chains for enhancing proton conductivity","volume":"6","author":"Zhang","year":"2016","journal-title":"RSC Adv."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"16993","DOI":"10.1021\/am504597a","article-title":"Sulfonated Polyimide\/Acid-Functionalized Graphene Oxide Composite Polymer Electrolyte Membranes with Improved Proton Conductivity and Water-Retention Properties","volume":"6","author":"Pandey","year":"2014","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_44","doi-asserted-by":"crossref","unstructured":"Ma, L., Xu, G., Li, S., Ma, J., Li, J., and Cai, W. (2018). Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications. Polymers, 10.","DOI":"10.3390\/polym10101175"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"10275","DOI":"10.1016\/j.ijhydene.2017.02.128","article-title":"Electrospun multifunctional sulfonated carbon nanofibers for design and fabrication of SPEEK composite proton exchange membranes for direct methanol fuel cell application","volume":"42","author":"Liu","year":"2017","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.memsci.2014.09.015","article-title":"Synthesis and properties of highly branched star-shaped sulfonated block poly(arylene ether)s as proton exchange membranes","volume":"473","author":"Xie","year":"2015","journal-title":"J. Membr. Sci."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"120589","DOI":"10.1016\/j.memsci.2022.120589","article-title":"Crosslinked PAEK-based nanofiber reinforced Nafion membrane with ion-paired interfaces towards high-concentration DMFC","volume":"655","author":"Duan","year":"2022","journal-title":"J. Membr. Sci."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1016\/j.memsci.2018.12.030","article-title":"Enhancement in proton conductivity and methanol resistance of Nafion membrane induced by blending sulfonated poly(arylene ether ketones) for direct methanol fuel cells","volume":"573","author":"Ru","year":"2019","journal-title":"J. Membr. Sci."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"32227","DOI":"10.1021\/acsami.7b08566","article-title":"Property Enhancement Effects of Side-Chain-Type Naphthalene-Based Sulfonated Poly(arylene ether ketone) on Nafion Composite Membranes for Direct Methanol Fuel Cells","volume":"9","author":"Wang","year":"2017","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"4984","DOI":"10.1039\/C8PY00996A","article-title":"Proton-conducting poly(ether sulfone ketone)s containing a high density of pendant sulfonic groups by a convenient and mild postsulfonation","volume":"9","author":"Wang","year":"2018","journal-title":"Polym. Chem."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"4281","DOI":"10.1016\/j.ijhydene.2018.12.177","article-title":"Profile of extended chemical stability and mechanical integrity and high hydroxide ion conductivity of poly(ether imide) based membranes for anion exchange membrane fuel cells","volume":"44","author":"Oh","year":"2019","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"27632","DOI":"10.1016\/j.ijhydene.2020.07.096","article-title":"Facile synthesis of poly (arylene ether ketone)s containing flexible sulfoalkyl groups with enhanced oxidative stability for DMFCs","volume":"45","author":"Li","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"15507","DOI":"10.1016\/j.ijhydene.2020.04.019","article-title":"Investigation of the versatility of SPES membranes customized with sulfonated molybdenum disulfide nanosheets for DMFC applications","volume":"45","author":"Divya","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"14038","DOI":"10.1016\/j.ijhydene.2022.12.293","article-title":"The development of sulfonated polyether ether ketone (sPEEK) and titanium silicon oxide (TiSiO4) composite membranes for DMFC applications","volume":"48","author":"Chikumba","year":"2023","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"6075","DOI":"10.1021\/cr200424d","article-title":"Fuel cell perfluorinated sulfonic acid membrane degradation correlating accelerated stress testing and lifetime","volume":"112","author":"Rodgers","year":"2012","journal-title":"Chem. Rev."},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Wang, Y., Xing, C., Guan, J., and Li, Y. (2017). Towards Flexible Dielectric Materials with High Dielectric Constant and Low Loss: PVDF Nanocomposites with both Homogenously Dispersed CNTs and Ionic Liquids Nanodomains. Polymers, 9.","DOI":"10.3390\/polym9110562"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.memsci.2017.09.013","article-title":"A superhydrophobic bromomethylated poly(phenylene oxide) as a multifunctional polymer filler in SPEEK membrane towards neat methanol operation of direct methanol fuel cells","volume":"544","author":"Liu","year":"2017","journal-title":"J. Membr. Sci."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"1175","DOI":"10.1021\/ma8019333","article-title":"A Nwe Facile Method for Preparation of Nylon-with High Crystallinity and Special Morphology","volume":"42","author":"Li","year":"2009","journal-title":"Macromolecules"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/S0376-7388(00)00632-3","article-title":"On the development of proton conducting polymer membranes for hydrogen and methanol fuel cells","volume":"185","author":"Kreuer","year":"2001","journal-title":"J. Membr. Sci."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"3269","DOI":"10.1016\/S0013-4686(02)00244-X","article-title":"Water absorption and proton conductivity of sulfonated acrylamide copolymers","volume":"47","author":"Karlsson","year":"2002","journal-title":"Electrochim. Acta"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"4896","DOI":"10.1021\/cm0310519","article-title":"Approaches and Recent Development of Polymer Electrolyte Membranes for Fuel Cells Operating above 100 \u00b0C","volume":"15","author":"Li","year":"2003","journal-title":"Chem. Mater."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1016\/j.jpowsour.2015.10.034","article-title":"A flexible all-inorganic fuel cell membrane with conductivity above Nafion, and durable operation at 150 \u00b0C","volume":"303","author":"Ansari","year":"2016","journal-title":"J. Power Sources"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1016\/j.electacta.2014.04.180","article-title":"Functionalized Bentonite clay-sPEEK based composite membranes for direct methanol fuel cells","volume":"135","author":"Sasikala","year":"2014","journal-title":"Electrochim. Acta"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.memsci.2015.05.049","article-title":"Orderly sandwich-shaped graphene oxide\/Nafion composite membranes for direct methanol fuel cells","volume":"492","year":"2015","journal-title":"J. Membr. Sci."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/16\/17\/2480\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T15:45:57Z","timestamp":1760111157000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/16\/17\/2480"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,8,30]]},"references-count":64,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2024,9]]}},"alternative-id":["polym16172480"],"URL":"https:\/\/doi.org\/10.3390\/polym16172480","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,8,30]]}}}