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Materials development for polymer el...

Guha, Abhishek.

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Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation .

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation ./
作者:	Guha, Abhishek.
面頁冊數:	355 p.
附註:	Adviser: Thomas A. Zawodzinski, Jr.
Contained By:	Dissertation Abstracts International68-10B.
標題:	Chemistry, Polymer. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3286070
ISBN:	9780549283553

Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation .
Guha, Abhishek.

Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation . - 355 p.

Adviser: Thomas A. Zawodzinski, Jr.

Thesis (Ph.D.)--Case Western Reserve University, 2007.

Polymer electrolyte membrane fuel cells (PEMFC) have displayed enormous promise as potential power sources for stationary and mobile applications. Key material challenges obstruct the path towards widespread commercialization of PEMFC technology. These challenges primarily include lowering the cost of cell components and improving their durability for attainment of greater lifetime.

ISBN: 9780549283553Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation .
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100 1 $a Guha, Abhishek. $3 1280745
245 1 0 $a Materials development for polymer electrolyte membrane (PEM) fuel cells: Part (I): Novel carbon structures as platinum catalyst support in PEM fuel cell electrodes. Part (II): Morphological and thermomechanical investigation into Nafion membrane degradation .
300 $a 355 p.
500 $a Adviser: Thomas A. Zawodzinski, Jr.
500 $a Source: Dissertation Abstracts International, Volume: 68-10, Section: B, page: 6895.
502 $a Thesis (Ph.D.)--Case Western Reserve University, 2007.
520 $a Polymer electrolyte membrane fuel cells (PEMFC) have displayed enormous promise as potential power sources for stationary and mobile applications. Key material challenges obstruct the path towards widespread commercialization of PEMFC technology. These challenges primarily include lowering the cost of cell components and improving their durability for attainment of greater lifetime.
520 $a PEMFC electrodes employ expensive electrocatalysts such as platinum. The target for researchers is to obtain maximum catalytic activity while utilizing lower catalyst loadings. Novel carbon structures such as carbon nanofibers and activated carbon act as platinum catalyst supports by allowing homogeneous deposition of fine catalyst particles on their surfaces. Chemical functionalization of their inert surface is necessary to deposit platinum. Particle size of deposited platinum is dependent on a variety of factors, prominently nature of the functionalized support and the experimental parameters involved in platinum deposition. Part I of this work has employed the 'colloidal' method of supported catalyst synthesis for homogenous deposition of platinum catalyst on the functionalized carbon supports, under optimized preparation conditions. A relationship has been established between the variation in platinum particle size with nature of the chemically modified carbon surface, its surface treatment and processing variables. Electrochemical parameters such as the electrochemically active surface area of platinum on various carbons and activity of the supported platinum catalyst towards oxygen reduction have been determined. Membrane electrode assemblies (MEA) have been fabricated using various carbon supported catalysts and NafionRTM membranes and fuel cell performances for the MEAs have been compared. An attempt has been made to isolate and identify the effect of electrical conductivity of the carbon support, and microstructure of the carbon electrode on fuel cell response of the MEA.
520 $a In part II of this dissertation, accelerated degradation of Nafion RTM membrane is accomplished by a popular peroxide attack regime known as Fenton's degradation. The evolution of fluoride with constant degradation is measured and a correlation made with simultaneous changes in the morphology and thermomechanical characteristics of the membrane. Morphological and thermomechanical characteristics of the degraded membrane have been compared to those of an undegraded membrane sample along with corresponding fuel cell performances.
590 $a School code: 0042.
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Engineering, Materials Science. $3 1017759
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690 $a 0794
710 2 $a Case Western Reserve University. $3 1017714
773 0 $t Dissertation Abstracts International $g 68-10B.
790 $a 0042
790 1 0 $a Zawodzinski, Thomas A., Jr., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3286070