DEGRADATION MECHANISMS OF CARBON-BASED ELECTROCATALYST SUPPORT MATERIALS AND DEVELOPMENT OF AN ADVANCED SUPPORT BASED ON ELECTRICALLY CONDUCTING DIAMOND

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" DEGRADATION MECHANISMS OF CARBON-BASED ELECTROCATALYST SUPPORT MATERIALS AND DEVELOPMENT OF AN ADVANCED SUPPORT BASED ON ELECTRICALLY CONDUCTING DIAMOND "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	149247
Doc. No	:	ET21039
Main Entry	:	Anne Elizabeth Fischer
Title Proper	:	DEGRADATION MECHANISMS OF CARBON-BASED ELECTROCATALYST SUPPORT MATERIALS AND DEVELOPMENT OF AN ADVANCED SUPPORT BASED ON ELECTRICALLY CONDUCTING DIAMOND
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this dissertation, the degradation mechanisms of sp2-bonded carbonelectrocatalyst supports were studied under potential and temperature conditions relevantto the polymer electrolyte membrane fuel cell (PEMFC). In addition, an alternativesupport was fabricated in two forms: electrically conducting diamond powder and paperto overcome current material stability issues in the PEMFC.Two structurally well-characterized sp2-bonded carbon powders, graphite(structurally well-ordered) and glassy carbon (GC, structurally disordered) were studiedunder potentiostatic polarization from 1.0 to 1.6 V vs. AgIAgC1 at 25, 50, and 80 "C.Characterization of the surface oxidation and microstructural changes (i.e., increase in theexposed edge plane density) provided evidence for the so-called orderldisordermechanism where structurally disordered carbons corrode more severely because of.
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL44187.pdf
Title and statement of responsibility and	:	DEGRADATION MECHANISMS OF CARBON-BASED ELECTROCATALYST SUPPORT MATERIALS AND DEVELOPMENT OF AN ADVANCED SUPPORT BASED ON ELECTRICALLY CONDUCTING DIAMOND [Thesis]