Title

Structure-controlled Porous Cu/C Nanofibers for Efficient CO2-to-Ethylene Conversion Electrocatalysts

Alternative Title

전기화학적 이산화탄소-에틸렌 전환을 위한 구조제어된 다공성 구리/탄소 나노섬유

DGIST Authors

Daewon Bae ; Dae-Hyun Nam ; Chanyeon Kim

Advisor

남대현

Co-Advisor(s)

Chanyeon Kim

Issued Date

2024

Awarded Date

2024-02-01

Citation

Daewon Bae. (2024). Structure-controlled Porous Cu/C Nanofibers for Efficient CO2-to-Ethylene Conversion Electrocatalysts. doi: 10.22677/THESIS.200000728556

Type

Thesis

Description

전기화학적 이산화탄소 환원

Table Of Contents

Ⅰ. Introduction
1.1 Electrochemical CO2 Reduction Reaction (CO2RR) 1
1.2 Cu-based Catalyst for CO2RR 7
1.3 Gas Diffusion Electrodes (GDE) for High C2+ Products Productivities 9
1.4 Porous Carbon Supporters for High CO2 Concentration 10
1.4.1 Carbon Supporters 10
1.4.2 Hydrophobic Catalysts via Porous C Supporters 11
1.4.3 CO2 Mass Transport Channel by Pores 12
1.5 Theoretical Backgrounds 15
1.5.1 Ellingham Diagram 15
1.5.2 Particle Growth Mechanism 17
1.5.3 Boudouard Reaction 20
Ⅱ.Experimental
2.1 Fabricating Methods 21
2.1.1 Preparation of As-electrospun Nanofibers 21
2.1.2 Harnessing Nanofibers 22
2.2 Characterization 23
2.3 For Electrochemical CO2 Reduction 24
2.3.1 Preparing Electrodes 24
2.3.2 Measurement of Catalytic Performances 24
Ⅲ.Results and Discussion
3.1 Principles for Catalyst Design 27
3.2 Porous Cu/CNFs 29
3.2.1 Polymer Decomposition in Cu Precursor Embedded As-spun Nanofibers 29
3.2.2 Selective Oxidation-induced C Combustion 30
3.2.3 Porosity of Cu/CNFs 32
3.2.4 Chemical states of Cu/CNFs 36
3.2.5 Morphologies of Cu/CNFs 40
3.3 Catalytic performances for CO2RR 45
3.3.1 CO2RR Performances 45
3.3.2 The Structure-induced Microenvironments of CO2RR 52
3.3.3 Real-time Analysis of CO; intermediate of C2H4 58
Ⅳ.Conclusion 61
Reference 63
요약문 67

URI

http://hdl.handle.net/20.500.11750/48089
http://dgist.dcollection.net/common/orgView/200000728556

DOI

10.22677/THESIS.200000728556

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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