Title

Effect of Strain in Cu-Ag Catalysts on Ethanol Production by Electrochemical CO₂ Reduction

Alternative Title

CO2RR에서 Cu–Ag 이종금속 촉매의 격자 스트레인과 에탄올 선택도의 상관관계에 대한 연구

DGIST Authors

Seo-June Park ; Jongmin Choi ; Dae-Hyun Nam

Advisor

최종민

Co-Advisor(s)

Dae-Hyun Nam

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

CO₂RR, Galvanic replacement reaction CuAg catalysts, Strain

Table Of Contents

Ⅰ. Introduction 1
1.1 Electrochemical CO2 Reduction Reaction 1
1.2 Cell Configuration for CO2RR 3
1.3 Types of Electrolytes for CO2RR 5
1.4 Catalysts for Electrochemical CO2RR 7
1.5 Ethanol Production in CO2RR 9
1.6 Strategies for Ethanol Formation in CO2RR 11
1.7 Galvanic Replacement Reaction 13
1.8 Strain in Bimetal catalysts for CO2RR 15
1.9 Research Motivation 17

Ⅱ. Experimental 19
2.1 Preparation of Materials 19
2.2 Preparation of Electrode 19
2.3 Materials Characterization 20
2.4 Measurement of Electrochemical CO2RR 21

Ⅲ. Results and Discussion 23
3.1 Verification of Cu-Ag Catalyst Structure and Surface State 23
3.2 Variation of CO2RR Selectivity with Ag composition 29
3.3 Morphological and Structural Changes After Reaction 35
3.4 Surface Structure Changes After Reaction 37
3.5 Strain analysis as a function of Ag composition 44
3.6 Strain-induced tuning of the d-band center 56
3.7 Operando analysis of coordination number and interatomic distance upon Ag
incorporation 60
3.8 Reaction Mechanistic Analysis 65


Ⅳ. Conclusion 70

V. Reference 74

요약문 79

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59696
http://dgist.dcollection.net/common/orgView/200000950321

DOI

10.22677/THESIS.200000950321

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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