Performance enhancement of sulfonated polyether sulfone/poly (vinyl alcohol) blend membranes via cobalt metal–organic framework for fuel cells

IF 3.1 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2026-06-03 DOI:10.1007/s10008-026-06617-w

Preethi Dayalan, Ragasudha Sudhakaran, Gandhimathi Sivasubramanian, Arulmurugan Tamilarasan, Siva Moorthy, Paradesi Deivanayagam

{"title":"Performance enhancement of sulfonated polyether sulfone/poly (vinyl alcohol) blend membranes via cobalt metal–organic framework for fuel cells","authors":"Preethi Dayalan, Ragasudha Sudhakaran, Gandhimathi Sivasubramanian, Arulmurugan Tamilarasan, Siva Moorthy, Paradesi Deivanayagam","doi":"10.1007/s10008-026-06617-w","DOIUrl":null,"url":null,"abstract":"<div><p>New series of proton-conducting polymer composite membranes were fabricated by impregnating a cobalt metal–organic framework (Co-MOF) into a sulfonated polyethersulfone/poly(vinyl alcohol) (SPES/PVA) blend matrix. Post-sulfonation technique is used to sulfonate polyethersulfone using chlorosulfonic acid as a sulfonating agent. The presence of hydrophilic functional moieties in SPES and PVA contributes to the intrinsic water uptake (20.03%) and ion-exchange capacity (<i>IEC</i>, 0.22 meq g⁻¹) of the pristine SPES/PVA membrane. Incorporation of Co-MOF into the polymer matrix significantly enhanced the physicochemical properties of the composite membranes, leading to an increase in water uptake from 20.03 to 32.28% and <i>IEC</i> from 0.22 to 0.71 meq g⁻¹. A similar trend was observed in the proton conductivity measurements, with the SPES/PVA membrane containing 15 wt% Co-MOF exhibiting a maximum proton conductivity of 0.045 S/cm, compared to 0.025 S/cm for the pristine membrane. The porous architecture of the Co-MOF and its synergistic interaction with the ionic functional groups of SPES/PVA matrix assist to enhance the physicochemical and electrochemical performances, which together facilitate an efficient proton transport mechanism in fuel cell.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"30 8","pages":"2923 - 2932"},"PeriodicalIF":3.1000,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-026-06617-w","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}

引用次数: 0

Abstract

New series of proton-conducting polymer composite membranes were fabricated by impregnating a cobalt metal–organic framework (Co-MOF) into a sulfonated polyethersulfone/poly(vinyl alcohol) (SPES/PVA) blend matrix. Post-sulfonation technique is used to sulfonate polyethersulfone using chlorosulfonic acid as a sulfonating agent. The presence of hydrophilic functional moieties in SPES and PVA contributes to the intrinsic water uptake (20.03%) and ion-exchange capacity (IEC, 0.22 meq g⁻¹) of the pristine SPES/PVA membrane. Incorporation of Co-MOF into the polymer matrix significantly enhanced the physicochemical properties of the composite membranes, leading to an increase in water uptake from 20.03 to 32.28% and IEC from 0.22 to 0.71 meq g⁻¹. A similar trend was observed in the proton conductivity measurements, with the SPES/PVA membrane containing 15 wt% Co-MOF exhibiting a maximum proton conductivity of 0.045 S/cm, compared to 0.025 S/cm for the pristine membrane. The porous architecture of the Co-MOF and its synergistic interaction with the ionic functional groups of SPES/PVA matrix assist to enhance the physicochemical and electrochemical performances, which together facilitate an efficient proton transport mechanism in fuel cell.

查看原文本刊更多论文

利用钴金属-有机骨架增强燃料电池用磺化聚醚砜/聚乙烯醇共混膜的性能

将钴金属-有机骨架（Co-MOF）浸渍在磺化聚醚砜/聚乙烯醇（spe /PVA）共混基体中，制备了新型质子导电聚合物复合膜。以氯磺酸为磺化剂，采用后磺化技术对聚醚砜进行磺化处理。SPES和PVA中亲水功能部分的存在有助于原始SPES/PVA膜的固有吸水性（20.03%）和离子交换能力（IEC， 0.22 meq g毒血症）。将Co-MOF加入到聚合物基质中，可以显著增强复合膜的物理化学性质，导致吸水率从20.03增加到32.28%，IEC从0.22增加到0.71 meq g⁻¹。在质子电导率测量中也观察到类似的趋势，含有15 wt% Co-MOF的spe /PVA膜的最大质子电导率为0.045 S/cm，而原始膜的最大质子电导率为0.025 S/cm。Co-MOF的多孔结构及其与SPES/PVA基体离子官能团的协同作用有助于提高其物理化学和电化学性能，从而促进燃料电池中高效的质子传输机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.