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A Microstructure-Driven Approach to ...

Wargo, Eric A.

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A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells./
Author:	Wargo, Eric A.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	182 p.
Notes:	Source: Dissertations Abstracts International, Volume: 81-10, Section: B.
Contained By:	Dissertations Abstracts International81-10B.
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831257
ISBN:	9798607307530

A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells.
Wargo, Eric A.

A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 182 p.

Source: Dissertations Abstracts International, Volume: 81-10, Section: B.

Thesis (Ph.D.)--Drexel University, 2020.

This item must not be sold to any third party vendors.

The polymer electrolyte fuel cell (PEFC) is an electrochemical device which holds great promise as an alternative power source for use in a wide range of applications. However, improvements in cell performance are necessary for the commercialization of PEFCs. Recently, significant research effort has been placed on understanding the influence of the internal structure (i.e., microstructure) of fuel cell materials on the transport of water and reactant gases in PEFC systems. One component of interest is the porous diffusion media (DM), which has been shown to be vital for achieving necessary water management to maintain efficient fuel cell operation. However, current modeling efforts rely primarily on bulk correlations or idealized/randomly selected structures for these porous materials, which may misrepresent the true morphology of the DM and potentially fail to accurately capture the related effects on transport within this component. The objective of this dissertation work is to establish a framework which combines recent advances in 3-D microstructure quantification and pore-scale analysis to evaluate the structure and related transport characteristics of fuel cell DM. The presented framework includes the following features: i) the microstructures of the materials of interest are quantified rigorously in 3-D; ii) small representative volume elements (RVEs) are selected which capture the important features of the measured microstructure datasets to within high accuracy, for reliable and computationally efficient modeling of transport behavior; and iii) a suite of microstructure analysis tools is developed to determine several difficult-to-measure key structure-related transport properties. Using this approach, an in-depth understanding of the structure-related transport characteristics of a fuel cell DM sample is achieved.

ISBN: 9798607307530Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Microstructure characterization

A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells.
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100 1 $a Wargo, Eric A. $3 3543474
245 1 0 $a A Microstructure-Driven Approach to Characterize Transport Phenomena in Porous Media of Polymer Electrolyte Fuel Cells.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 182 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-10, Section: B.
500 $a Advisor: Kumbur, Emin Caglan.
502 $a Thesis (Ph.D.)--Drexel University, 2020.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The polymer electrolyte fuel cell (PEFC) is an electrochemical device which holds great promise as an alternative power source for use in a wide range of applications. However, improvements in cell performance are necessary for the commercialization of PEFCs. Recently, significant research effort has been placed on understanding the influence of the internal structure (i.e., microstructure) of fuel cell materials on the transport of water and reactant gases in PEFC systems. One component of interest is the porous diffusion media (DM), which has been shown to be vital for achieving necessary water management to maintain efficient fuel cell operation. However, current modeling efforts rely primarily on bulk correlations or idealized/randomly selected structures for these porous materials, which may misrepresent the true morphology of the DM and potentially fail to accurately capture the related effects on transport within this component. The objective of this dissertation work is to establish a framework which combines recent advances in 3-D microstructure quantification and pore-scale analysis to evaluate the structure and related transport characteristics of fuel cell DM. The presented framework includes the following features: i) the microstructures of the materials of interest are quantified rigorously in 3-D; ii) small representative volume elements (RVEs) are selected which capture the important features of the measured microstructure datasets to within high accuracy, for reliable and computationally efficient modeling of transport behavior; and iii) a suite of microstructure analysis tools is developed to determine several difficult-to-measure key structure-related transport properties. Using this approach, an in-depth understanding of the structure-related transport characteristics of a fuel cell DM sample is achieved.
590 $a School code: 0065.
650 4 $a Mechanical engineering. $3 649730
650 4 $a Alternative energy. $3 3436775
650 4 $a Materials science. $3 543314
653 $a Microstructure characterization
653 $a Pore scale modeling
653 $a Proton exchange membrane fuel cells
653 $a Representative volume element
653 $a Tomography
653 $a Water management
690 $a 0548
690 $a 0794
690 $a 0363
710 2 $a Drexel University. $b Mechanical Engineering and Mechanics (College of Engineering). $3 3168962
773 0 $t Dissertations Abstracts International $g 81-10B.
790 $a 0065
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831257