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  Department of Energy Science and Engineering Theses Master

Electrolytic Cation Effect on Salt Formation and Methanol Production Using a Membrane Electrode Assembly in Acidic CO₂ Reduction

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dc.contributor.advisor 최종민 -
dc.contributor.author Yeon-A Cha -
dc.date.accessioned 2026-01-23T10:56:00Z -
dc.date.available 2026-01-23T10:56:00Z -
dc.date.issued 2026 -
dc.identifier.uri https://scholar.dgist.ac.kr/handle/20.500.11750/59694 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000950705 -
dc.description CO₂ Reduction Reaction, Methanol, Membrane Electrode Assembly, Salt Formation -
dc.description.tableofcontents Ⅰ. Introduction 1
1.1 Electrochemical CO₂ Reduction Reaction 1
1.1.1 Electrochemical CO₂Reduction to Methanol 1
1.1.2 Heterogeneous Catalyst 5
1.2 Acidic CO₂ Reduction using Membrane Electrode Assembly 8
1.2.1 Membrane Electrode Assembly 8
1.2.2 Issue of Salt Formation during CO₂ Reduction Operating 10
1.3 Cation Effect on CO₂ Reduction Reaction 14
1.4 Research Motivation and Strategy 16

Ⅱ. Theoretical Background 19
2.1 Electrochemical Reaction Mechanism of CO₂ Reduction 19
2.2 Evaluation of CO₂ Reduction Performance 19
2.3 Ion Transport Mechanism Across Different Membranes 22
2.3.1 Ion Exchange Membranes 23
2.3.2 Porous Separator 27
2.3.3 Ion Selective Nanostructured Membrane 32

Ⅲ. Experimental 34
3.1 Synthesis of Cobalt Phthalocyanine/Multiwalled Carbon nanotube Catalyst 34
3.2 Material Characterization 34
3.3 Electrode Preparation 35
3.4 Quantification Methods for Ion Crossover 35
3.5 Evaluation of CO₂ Reduction Performance 36
3.6 Salt Extraction Analysis and Solubility Measuring Methods 37

Ⅳ. Results and Discussion
4.1 Characterization of CoPc/MWCNT 39
4.2 Effect of Cation Type on Product Profile 41
4.3 Relationship between Salt Formation and Methanol 46
4.3.1 Ion Crossover Behavior according to Cation Type 50
4.3.2 Salt Formation Tendency 55
4.3.3 Difference of Solubility depending on Cation Species 61
4.4 Variation of Product with increasing current density 67

V. Conclusion 71

VI. Reference 73

요약문 79		 -
dc.format.extent 80 -
dc.language eng -
dc.publisher DGIST -
dc.title Electrolytic Cation Effect on Salt Formation and Methanol Production Using a Membrane Electrode Assembly in Acidic CO₂ Reduction -
dc.title.alternative 산성 전해질 하에 막전극 접합체를 사용하여 알칼리 양이온의 종류에 따른 메탄올과 염 형성 효과에 관한 연구 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000950705 -
dc.description.degree Master -
dc.contributor.department Department of Energy Science and Engineering -
dc.contributor.coadvisor Dae-Hyen Nam -
dc.date.awarded 2026-02-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.EM 차64 202602 -
dc.date.accepted 2026-01-19 -
dc.contributor.alternativeDepartment 에너지공학과 -
dc.subject.keyword CO₂ Reduction Reaction, Methanol, Membrane Electrode Assembly, Salt Formation -
dc.contributor.affiliatedAuthor Yeon-A Cha -
dc.contributor.affiliatedAuthor Jongmin Choi -
dc.contributor.affiliatedAuthor Dae-Hyen Nam -
dc.contributor.alternativeName 차연아 -
dc.contributor.alternativeName Jongmin Choi -
dc.contributor.alternativeName 남대현 -
dc.rights.embargoReleaseDate 2031-02-28 -
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