Ce-Metal Organic Frameworks for Enhanced Chemical Stability and Durability of Sulfonated Polyether Ether Ketone for Proton Exchange Membranes

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2025-03-18 DOI:10.1021/acsapm.5c0019610.1021/acsapm.5c00196

Senthil Theerthagiri, Ihsan Budi Rachman, Md Shoriful Islam, Jun-Young Park* and Sun-Ju Song*,

{"title":"Ce-Metal Organic Frameworks for Enhanced Chemical Stability and Durability of Sulfonated Polyether Ether Ketone for Proton Exchange Membranes","authors":"Senthil Theerthagiri, Ihsan Budi Rachman, Md Shoriful Islam, Jun-Young Park* and Sun-Ju Song*, ","doi":"10.1021/acsapm.5c0019610.1021/acsapm.5c00196","DOIUrl":null,"url":null,"abstract":"<p >Proton exchange membrane fuel cells (PEMFCs) face challenges related to limited lifespan and operational reliability, hindering their commercial adoption. Sulfonated polyether ether ketone (SPEEK) has emerged as a promising alternative to Nafion due to its superior thermal stability, chemical resilience, and cost-effectiveness. SPEEK membranes were sulfonated using concentrated sulfuric acid (98%), introducing sulfonic acid (−SO<sub>3</sub>H) groups to enhance proton conductivity. To mitigate chemical degradation while maintaining conductivity, Ce(III)-benzene dicarboxylic acid metal–organic frameworks (Ce-MOFs) were incorporated. These Ce-MOFs scavenge radicals, improving the membrane’s durability and stability. Comprehensive analysis of the physicochemical, thermal, and mechanical properties showed that Ce-MOF addition enhanced conductivity and reduced degradation. The Ce-MOF/SPEEK (1 wt%) nanocomposite membrane achieved 0.215 S/cm at 80 °C and 95% relative humidity, outperforming pristine SPEEK (0.140 S/cm). These findings highlight the potential of Ce-MOF composite PEMs as durable, high-performance materials for next-generation PEMFCs.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"7 6","pages":"3954–3967 3954–3967"},"PeriodicalIF":4.4000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Polymer Materials","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsapm.5c00196","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Proton exchange membrane fuel cells (PEMFCs) face challenges related to limited lifespan and operational reliability, hindering their commercial adoption. Sulfonated polyether ether ketone (SPEEK) has emerged as a promising alternative to Nafion due to its superior thermal stability, chemical resilience, and cost-effectiveness. SPEEK membranes were sulfonated using concentrated sulfuric acid (98%), introducing sulfonic acid (−SO₃H) groups to enhance proton conductivity. To mitigate chemical degradation while maintaining conductivity, Ce(III)-benzene dicarboxylic acid metal–organic frameworks (Ce-MOFs) were incorporated. These Ce-MOFs scavenge radicals, improving the membrane’s durability and stability. Comprehensive analysis of the physicochemical, thermal, and mechanical properties showed that Ce-MOF addition enhanced conductivity and reduced degradation. The Ce-MOF/SPEEK (1 wt%) nanocomposite membrane achieved 0.215 S/cm at 80 °C and 95% relative humidity, outperforming pristine SPEEK (0.140 S/cm). These findings highlight the potential of Ce-MOF composite PEMs as durable, high-performance materials for next-generation PEMFCs.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.