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Advanced Membrane Electrode Assembly for Polymer Electrolyte Fuel cells Operated under Low Relative Humidity

Title
Advanced Membrane Electrode Assembly for Polymer Electrolyte Fuel cells Operated under Low Relative Humidity
Translated Title
Advanced Membrane Electrode Assembly for Polymer Electrolyte Fuel Cells Operated under Low Relative Humidity
Authors
Dabin Han
DGIST Authors
Han, Dabin; Kim, EunjooShanmugam, Sangaraju
Advisor(s)
상가라쥬 샨무감
Co-Advisor(s)
Eunjoo Kim
Issue Date
2019
Available Date
2019-08-23
Degree Date
2019-08
Type
Thesis
Keywords
고분자 전해질 막 연료전지
Description
Polymer electrolyte fuel cells, Composite membrane, Radical scavenger, Durability, Modified catalyst layer
Table Of Contents
I. Introduction 1.1 Introduction 1 1.2 Types of fuel cells 3 1.3 Polymer electrolyte fuel cell (PEFC) 1.3.1 Principle and component of PEFC 4 1.3.2 Performance of PEFC 6 1.4 Proton exchange membrane (PEM) 1.4.1 Requirements of PEM 8 1.4.2 Water management 8 1.4.3 Absorbed water in PEM 9 1.4.4 Mechanism of proton transport 9 1.4.5 Membrane degradation 11 1.4.6 The status of modification for PFSA membrane 13 1.5 Objective of research 14 II. Experimental 2.1 Pyrochlore Zirconium Gadolinium Oxide nanotubes composite membrane 2.1.1 Materials 15 2.1.2 Preparation of Zirconium-Gadolinium /PAN electrospun mat 15 2.1.3 Preparation of Zirconium-Gadolinium Oxide Nanotubes 15 2.1.4 Preparation of Nafion-ZrGdNT composite membrane 16 2.2 Modified catalyst layer containing Pyrochlore Zirconium Gadolinium Oxide nanotubes 2.2.1 Fabrication of the Nafion ionomer containing ZrGdNT 17 2.2.2 Electrochemical characterization 17 2.3 ZrGdNT Characterization 18 2.4 The membrane characterization 2.4.1 The water uptake of membrane 19 2.4.2 Measurement of ion exchange capacity 19 2.4.3 Oxidative stability investigation 19 2.4.4 Thermal gravimetric analyzer (TGA) 20 2.4.5 Tensile strength test 20 2.4.6 Proton conductivity 20 2.5 Fuel cell performance test 21 III. Results and discussion 3.1 Pyrochlore Zr2Gd2O7 nanotubes composite membrane 3.1.1 Characterization of Pyrochlore Zr2Gd2O7 nanotubes (ZrGdNT) 24 3.1.2 Characterization of Nafion ZrGdNT composite membrane 27 3.1.3 Effect of ZrGdNT 38 3.1.4 Membrane durability 41 3.2 Modified catalyst layer containing Pyrochlore Zr2Gd2O7 nanotubes 3.2.1 Modified catalyst layer with ZrGdNT 45 3.2.2 The effect of modified catalyst layer with ZrGdNT on fuel cell performance 49 3.2.3 The durability evaluation of advanced MEA 59 IV. Conclusions 62 References 64 국문 요약문 71
URI
http://dgist.dcollection.net/common/orgView/200000220140
http://hdl.handle.net/20.500.11750/10473
DOI
10.22677/thesis.200000220140
Degree
Master
Department
Department of Energy Science and Engineering
University
DGIST
Related Researcher
  • Author Kim, Eunjoo  
  • Research Interests Biomarker, liquid biopsy, molecular diagnosis, nanobiosensor, drug delivery, exosome
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Collection:
Department of Energy Science and EngineeringThesesMaster


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