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Nafion blend membranes for the direc...

DeLuca, Nicholas William.

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Nafion blend membranes for the direct methanol fuel cell.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Nafion blend membranes for the direct methanol fuel cell./
Author:	DeLuca, Nicholas William.
Description:	234 p.
Notes:	Adviser: Y. A. Elabd.
Contained By:	Dissertation Abstracts International69-01B.
Subject:	Chemistry, Polymer. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298427
ISBN:	9780549419457

Nafion blend membranes for the direct methanol fuel cell.
DeLuca, Nicholas William.

Nafion blend membranes for the direct methanol fuel cell. - 234 p.

Adviser: Y. A. Elabd.

Thesis (Ph.D.)--Drexel University, 2008.

The direct methanol fuel cell (DMFC) will replace lithium ion batteries in portable electronic devices, where current DMFCs operate at double the power density of current lithium ion batteries with instant recharge (refuel) capability. However, the DMFC could provide much higher power densities if the heart of the fuel cell---the polymer electrolyte membrane (PEM)---were more resistant to the fuel (methanol). Therefore, the development of Nafion RTM (the most commonly used PEM in fuel cells) alternatives that exhibit high proton conductivity and low methanol permeability (high selectivity) is an active area of research. Polymer blends are a simple and cost-effective method to develop membranes that conjoin both of the desired transport properties. To date, there is limited research in the area of PEM blends, and furthermore, a number of unresolved questions.

ISBN: 9780549419457Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Nafion blend membranes for the direct methanol fuel cell.
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020 $a 9780549419457
035 $a (UMI)AAI3298427
035 $a AAI3298427
040 $a UMI $c UMI
100 1 $a DeLuca, Nicholas William. $3 1286029
245 1 0 $a Nafion blend membranes for the direct methanol fuel cell.
300 $a 234 p.
500 $a Adviser: Y. A. Elabd.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0347.
502 $a Thesis (Ph.D.)--Drexel University, 2008.
520 $a The direct methanol fuel cell (DMFC) will replace lithium ion batteries in portable electronic devices, where current DMFCs operate at double the power density of current lithium ion batteries with instant recharge (refuel) capability. However, the DMFC could provide much higher power densities if the heart of the fuel cell---the polymer electrolyte membrane (PEM)---were more resistant to the fuel (methanol). Therefore, the development of Nafion RTM (the most commonly used PEM in fuel cells) alternatives that exhibit high proton conductivity and low methanol permeability (high selectivity) is an active area of research. Polymer blends are a simple and cost-effective method to develop membranes that conjoin both of the desired transport properties. To date, there is limited research in the area of PEM blends, and furthermore, a number of unresolved questions.
520 $a In this study, the effects of blend composition, chemistry, and processing on polymer morphology and subsequently the transport properties and selectivity were investigated. A key result in this study was comparing solution cast membranes to heat pressed membranes. Both heat pressed membranes and unannealed solution cast membranes resulted in immiscible blends with low selectivity, while annealed solution cast membranes improved miscibility and subsequently selectivity. These results were confirmed, where the DMFC performance of an annealed solution cast blend membrane of NafionRTM/poly(vinyl alcohol) (PVA) (with only 5 wt% PVA) was 33% higher than NafionRTM (the commercial standard) at a high methanol fuel concentration (8 M).
590 $a School code: 0065.
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Engineering, Chemical. $3 1018531
690 $a 0495
690 $a 0542
710 2 $a Drexel University. $3 1018434
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0065
790 1 0 $a Elabd, Y. A., $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298427