Title

Development of Pt-Based Alloy Nanoparticles for Efficient Oxygen Reduction Electrocatalysis in Hydrogen Fuel Cells

DGIST Authors

Muhammad Irfansyah Maulana ; Chanyeon Kim ; Jong-Sung Yu

Advisor

김찬연

Co-Advisor(s)

Jong-Sung Yu

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

Electrocatalysis, nanoparticles, oxygen reduction reaction, cathode catalyst, polymer electrolyte membrane fuel cells

Table Of Contents

Abstract i
List of Contents iii
List of Figures vi
List of Tables x
1. Introduction 1
1.1. Polymer Electrolyte Membrane Fuel Cell (PEMFC) 1
1.2. Main Challenges in PEMFC 2
1.3. Current Solution for PEMFC Electrocatalyst 3
1.4. Recent Progress in PEMFC Electrocatalyst Development 4
1.5. Objective of the Thesis 7
2. Hollow PtCo Alloy Nanostructures 8
2.1. Background 8
2.2. Methods 8
2.2.1. Materials 8
2.2.2. Catalyst Synthesis 9
2.2.3. Characterizations 10
2.2.4. Electrochemical Half-Cell Test 10
2.2.5. Electrochemical Single-Cell Test 11
2.3. Results and Discussion 11
2.3.1. Controllable Composition in the Alloy Design 11
2.3.2. Structural Evolution from Solid to Hollow Alloy Core 13
2.3.3. Electrocatalytic Performance in Half-Cell Test 15
2.3.4. Electrocatalytic Performance in Single-Cell Test 17
2.3.5. Elemental Composition Analysis 19
2.3.6. Surface Electronic Structure Analysis 20
2.4. Conclusion 22
3. Cobalt Nitride-Implanted PtCo Intermetallic Nanocatalysts 23
3.1. Background 23
3.2. Methods 24
3.2.1. Materials 24
3.2.2. Catalyst Synthesis 24
3.2.3. Characterizations 24
3.2.4. Electrochemical Half-Cell Test 25
3.2.5. Electrochemical Single-Cell Test 26
3.2.6. Computational Details 26
3.3. Results and Discussion 27
3.3.1. Rational Design of Electrocatalysts 27
3.3.2. Fuel Cell Evaluation 32
3.3.3. Post-Durability Characterizations 34
3.3.4. Origin of Improved Activity 36
3.3.5. Origin of Enhanced Durability 37
3.4. Conclusion 40
4. Magnetocrystalline Anisotropic PtPdFe Ternary Intermetallic Alloys 42
4.1. Background 42
4.2. Methods 43
4.2.1. Materials 43
4.2.2. Catalyst Synthesis 43
4.2.3. Characterizations 43
4.2.4. Electrochemical Half-Cell Test 44
4.2.5. Electrochemical Single-Cell Test 45
4.2.6. Computational Details 45
4.3. Results and Discussion 46
4.3.1. Composition-Driven Ordering Transformation 46
4.3.2. Magnetic Properties and Structural Characteristics 51
4.3.3. Fuel Cell Performance 55
4.3.4. Theoretical Analysis 58
4.3.5. In Situ Spectroscopy Analysis 60
4.4. Conclusion 61
5. Summary 63
References 64
요약문 73

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59624
http://dgist.dcollection.net/common/orgView/200000942270

DOI

10.22677/THESIS.200000942270

Degree

Doctor

Department

Department of Energy Science and Engineering

Publisher

DGIST

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