{"title":"Advanced design of electrospun nanofiber cathode catalyst layers for PEM fuel cells at low humidity","authors":"Valentina Kallina, Frédéric Hasché, Mehtap Oezaslan","doi":"10.1016/j.coelec.2024.101559","DOIUrl":null,"url":null,"abstract":"<div><p>Electrospinning has emerged as a very promising preparation method of PEMFC cathode catalyst layers (CCLs) with high performance in the mass transport region due to their unique network structure for water transport and O<sub>2</sub> accessibility. We will present the recent improvement strategies and humidity effect for electrospun nanofiber CCLs. Additionally, we will discuss the possible causes of their humidity-dependent performance losses. Thereby, the ionomer – carrier polymer interactions and local ionomer distribution play a critical role on the proton conductivity and accessibility of active Pt nanoparticles. Despite the high current densities achieved so far, more demanding PEMFC operating strategies are required to maintain the performance of nanofiber CCLs in a wide range of humidity.</p></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"47 ","pages":"Article 101559"},"PeriodicalIF":7.9000,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451910324001200/pdfft?md5=be389878e430a977ac21d6d3ef19243c&pid=1-s2.0-S2451910324001200-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Opinion in Electrochemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451910324001200","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Electrospinning has emerged as a very promising preparation method of PEMFC cathode catalyst layers (CCLs) with high performance in the mass transport region due to their unique network structure for water transport and O2 accessibility. We will present the recent improvement strategies and humidity effect for electrospun nanofiber CCLs. Additionally, we will discuss the possible causes of their humidity-dependent performance losses. Thereby, the ionomer – carrier polymer interactions and local ionomer distribution play a critical role on the proton conductivity and accessibility of active Pt nanoparticles. Despite the high current densities achieved so far, more demanding PEMFC operating strategies are required to maintain the performance of nanofiber CCLs in a wide range of humidity.
期刊介绍：
The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner:
1.The views of experts on current advances in electrochemistry in a clear and readable form.
2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications.
In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle:
• Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •
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