Title

Ensemble of Cu Coordination Structures during Electrolysis for Efficient CO₂ Electroreduction

Alternative Title

전기분해 과정에서의 구리 배위 구조 앙상블을 통한 효율적인 이산화탄소 전기환원

DGIST Authors

Hyeon-il Jeong ; Jongmin Choi ; Dae-Hyun Nam

Advisor

최종민

Co-Advisor(s)

Dae-Hyun Nam

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

전기화학적 이산화탄소 환원 반응, 단일원자촉매, 구리 배위환경, 재건 현상

Table Of Contents

List of Contents
Abstract i
List of contents iii
List of tables v
List of figures vi

Ⅰ. Introduction
1.1 Electrochemical CO₂ Reduction Reaction 1
1.2 Cu-based Single Atom Catalysts 4
1.3 Copper Cyanmides 11

Ⅱ. Theoretical Background
2.1 Electrochemical Reaction 14
2.2 Mechanisms of CO₂RR 14
2.3 Performance Evaluation Indicators of CO₂ Reduction Catalyst 17
2.4 Development of CO₂RR Electrolyzer and Electrode 18
2.5 Electrolytes in CO₂RR 21


Ⅲ. Experimental
3.1 Synthesis of Cu₂NCN and CuNCN 24
3.2 Material Characterization 26
3.3 Electrode Preparation 27
3.4 Evaluation of CO₂ Reduction Performance 28


Ⅳ. Results and Discussion
4.1 Structural Characterization of Copper Cyanamides 30
4.2 Reconstruction-Drived CO₂RR Selectivity Variation at Alkaline Condition 34
4.3 Reconstruction-Drived CO₂RR Selectivity Variation at Acidic Condition 55
4.4 Ensemble of Cu Coordination Ensemble for Optimal C₂₊ Production 69


V. Conclusion 77

VI. Reference 79

요약문 86

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59691
http://dgist.dcollection.net/common/orgView/200000950055

DOI

10.22677/THESIS.200000950055

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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