{"title":"Cover Image, Volume 61, Issue 8","authors":"","doi":"10.1002/pol.20230179","DOIUrl":null,"url":null,"abstract":"<p>The cover image was created by Yuanchao Li and Trung Van Nguyen. The treatment of Nafion ionomer films with hot dry gas above their glass transition temperatures induces aggregation of the ionic groups and the formation of separate ionic-group-rich and ionic-group-sparse domains in the films. The latter creates hydrophobic interfaces and transport channels with lower water content and higher oxygen solubility. This novel approach improves water management and oxygen transport in the cathode catalyst layers of the PEM fuel cells which leads to higher electrochemical performance. Details are found in the article from Trung Van Nguyen and colleagues. (DOI: 10.1002/pol.20220774)\n\n <figure>\n <div><picture>\n <source></source></picture><p></p>\n </div>\n </figure></p>","PeriodicalId":199,"journal":{"name":"Journal of Polymer Science Part A: Polymer Chemistry","volume":"61 8","pages":"i"},"PeriodicalIF":2.7020,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20230179","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Science Part A: Polymer Chemistry","FirstCategoryId":"1","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/pol.20230179","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 0
Abstract
The cover image was created by Yuanchao Li and Trung Van Nguyen. The treatment of Nafion ionomer films with hot dry gas above their glass transition temperatures induces aggregation of the ionic groups and the formation of separate ionic-group-rich and ionic-group-sparse domains in the films. The latter creates hydrophobic interfaces and transport channels with lower water content and higher oxygen solubility. This novel approach improves water management and oxygen transport in the cathode catalyst layers of the PEM fuel cells which leads to higher electrochemical performance. Details are found in the article from Trung Van Nguyen and colleagues. (DOI: 10.1002/pol.20220774)
封面图片由李源潮(Yuanchao Li)和Trung Van Nguyen创作。用高于其玻璃化转变温度的热干气体处理Nafion离子聚合物薄膜，诱导离子基团聚集，并在薄膜中形成独立的富离子群和稀疏离子群域。后者产生疏水界面和具有较低含水量和较高氧溶解度的运输通道。这种新方法改善了PEM燃料电池阴极催化剂层的水管理和氧传输，从而提高了电化学性能。详情见Trung Van Nguyen及其同事的文章。(DOI: 10.1002 / pol.20220774)
期刊介绍：
Part A: Polymer Chemistry is devoted to studies in fundamental organic polymer chemistry and physical organic chemistry. This includes all related topics (such as organic, bioorganic, bioinorganic and biological chemistry of monomers, polymers, oligomers and model compounds, inorganic and organometallic chemistry for catalysts, mechanistic studies, supramolecular chemistry aspects relevant to polymer...
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