![Novel X-Ray Imaging Techniques for Ex- Situ and Operando Study of Polymer Electrolyte Fuel Cells için kapak resmi Novel X-Ray Imaging Techniques for Ex- Situ and Operando Study of Polymer Electrolyte Fuel Cells için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Novel X-Ray Imaging Techniques for Ex- Situ and Operando Study of Polymer Electrolyte Fuel Cells
Başlık:
Novel X-Ray Imaging Techniques for Ex- Situ and Operando Study of Polymer Electrolyte Fuel Cells
Yazar:
Normile, Stanley J., author.
ISBN:
9780438020993
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (106 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Iryna V. Zenyuk Committee members: Marc Hodes; Matthew Panzer.
Özet:
Polymer electrolyte fuel cells are a promising clean alternative to conventional internal combustion engines for transportation applications. Among the issues preventing full-scale commercialization are the high cost of platinum (Pt), transport losses associated with ionomer distribution in the catalyst layer, and management of the water which is produced as a by-product of the fuel cell reaction. The morphology of the catalyst layer plays an important role in the aforementioned challenges. X-ray computed tomography (CT) is an ideal way to study this morphology as it is non-destructive and can resolve structures on both the micro- and nano-scales. Presented here is a novel way to image Pt and ionomer in catalyst layers using cesium staining and x-ray absorption near edge spectroscopy (XANES). Additionally, this work focuses on overcoming barriers in operando hardware design for synchrotron x-ray imaging, focusing on both micro- and nano-scales, which will help explain the interplay between morphology and transport processes, as well as water management. The fuel cells presented here show significant promise, as they can combine the study of electrochemical performance with that of water distribution in fuel cell components during operation.
Notlar:
School code: 0234
Tüzel Kişi Ek Girişi:
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(692291.1) | 692291-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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