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DEVELOPMENT OF
POLYMER ELECTROLYTE MEMBRANES
FOR FUEL CELL APPLICATIONS
by
Bo Yang
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(CHEMISTRY)
December 2009
Copyright 2009 Bo Yang
Object Description
| Title | Development of polymer electrolyte membranes for fuel cell applications |
| Author | Yang, Bo |
| Author email | boyang@usc.edu; boyangboyang@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Chemistry |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2009-10-28 |
| Date submitted | 2009 |
| Restricted until | Unrestricted |
| Date published | 2009-11-11 |
| Advisor (committee chair) | Prakash, G. K. Surya |
| Advisor (committee member) |
Olah, George A. Yen, Teh Fu |
| Abstract | Fuel cell has long been viewed as a promising scientific technology for power generation in many applications. Polymer electrolyte membrane (PEM) is one of the key components which determine the electronic performance of a PEM fuel cell. Significant effort has been made in our research group to develop a suitable polymer electrolyte membrane in direct methanol fuel cells (DMFC). The concept of interpenetrating polymer network (IPN) was applied in the synthesis of poly(vinylidenefluoride)-poly(styrenesuflonic acid)-poly(methyl methacrylate) (PVDF-PSSA-PMMA) composite membranes. IPN technology retained the excellent physical and chemical properties of PVDF and insured a more uniformed distribution of PSSA moiety in the membranes. PMMA was introduced into IPN network as compatibilizer to reduce the interfacial tension between PVDF and polystyrene, Optimization of experimental condition led to great improvement of the mechanical properties of PEM duringthus alleviating phase separation problem often encountered in styrene-grafted membranes. PVDF-PSSA-PMMA membranes have been demonstrated to exhibit substantially low methanol crossover rates compared to state of art materials and high electrical performance in direct methanol applications.; In order to increase the performance of the MEA and reduce the cost, various attempts have been made in our laboratories to develop several different polymer electrolyte materials.Several new polymer electrolyte membranes were synthesized and tested in direct methanol fuel cell, some of them exhibited promising results.; Some organic compounds with non-toxic and environmentally friendly properties have been considered as alternative fuels in fuel cell. We also prepared a newly reported carbon-based acid and explored the new catalytic application and its potential as a proton conducting material in fuel cells. |
| Keyword | fuel cell; DMFC; PEM |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2732 |
| Rights | Yang, Bo |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Yang-3360 |
| Archival file | uscthesesreloadpub_Volume23/etd-Yang-3360.pdf |
Description
| Title | Page 1 |
| Full text | DEVELOPMENT OF POLYMER ELECTROLYTE MEMBRANES FOR FUEL CELL APPLICATIONS by Bo Yang A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (CHEMISTRY) December 2009 Copyright 2009 Bo Yang |
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