Detail View

  Department of Energy Science and Engineering Theses Ph.D.

Development of Sulfur Electrode Materials for High-Performance Lithium-Sulfur Battery

Citations

WEB OF SCIENCE

Citations

SCOPUS

Metadata Downloads

XML
Excel
DC Field Value Language
dc.contributor.advisor 홍승태 -
dc.contributor.author Jeong-Hoon Yu -
dc.date.accessioned 2026-01-23T10:54:07Z -
dc.date.available 2026-01-23T10:54:07Z -
dc.date.issued 2026 -
dc.identifier.uri https://scholar.dgist.ac.kr/handle/20.500.11750/59616 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000942712 -
dc.description Lithium-Sulfur Batteries, Graphitic Carbon, Sulfur Host, Hierarchical Porous Structure, Hollow-Structure -
dc.description.tableofcontents List of Contents
Abstract i
List of contents iii
List of tables v
List of figures vi

Ⅰ. Introduction 1
1.1 Motivation 1
1.2 Objective of this thesis 1
1.3 Thesis outline 2
ⅠI. Background 3
2.1 Introduction to Conventional Li-ion Batteries 3
2.2 Li-S Batteries 4
2.2.1 Fundamental Working Principle of Li-S Battery 4
2.2.2 Challenges in Li-S Battery Development 5
2.2.3 Strategies for Sulfur Cathode Improvement 6
2.2.4 Carbon-Based and MOF-Derived Sulfur Cathode Materials 7
2.3 References 8
ⅠII. Hierarchically Porous Graphitic Nitrogen-Doped Carbon via Magnesiothermic
Reduction of ZIF-8 for High-Performance Li–S Batteries 14
3.1 Introduction 14
3.2 Experiment Section 17
3.2.1 Synthesis of ZIF-8 17
3.2.2 Synthesis of N-doped porous carbon (NPC) 17
3.2.3 Synthesis of highly graphitic N-doped hierarchical porous carbon (GNHPC) 17
3.2.4 Preparation of the NPC-S70 and GNHPC-S70 18
3.2.5 Tests of lithium polysulfide (LiPS) adsorption 18
3.2.6 Li2S nucleation tests 19
3.2.7 Coin Cell Assembly and Electrochemical Performance Measurements 19
3.2.8 Materials Characterization 20
3.3 Results and discussion 22
3.3.1 Electrode Substrate Design to Regulate Li2S Deposition 22
3.3.2 Trapping and Conversion of Polysulfides 38
3.3.3 Fast-Charging Performance 51
3.3.4 Performance under High Sulfur Loading and Lean Electrolyte 60
3.4 Conclusions 64
3.5 References 65
IV. Engineering Hollow-Structured Carbon Framework to Facilitate High-Sulfur-Content
Encapsulation for Lithium-Sulfur Batteries 76
4.1 Introduction 76
4.2 Experimental section 77
4.2.1 Synthesis of ZIF-8 78
4.2.2 Synthesis of hollow-structured ZIF-8 78
4.2.3 Synthesis of h-NPC 78
4.2.4 Synthesis of h-GNPC 78
4.2.5 Preparation of h-NPC/S0 and h-GNPC/S90 79
4.2.6 Li2S6 adsorption test· 79
4.2.7 Li2S nucleation test 79
4.2.8 Cell assembly and electrochemical properties measurement 79
4.2.9 Material characterization 80
4.2.10 Computational details 81
4.3 Results and discussion 81
4.3.1 Electrode Material Design 81
4.3.2 Electrochemical Performance 90
4.3.3 Catalytic Behavior of Li2S Deposition and DFT Studies 98
4.4 Conclusions 101
4.5 References 102
V.Summary 112		 -
dc.format.extent 115 -
dc.language eng -
dc.publisher DGIST -
dc.title Development of Sulfur Electrode Materials for High-Performance Lithium-Sulfur Battery -
dc.title.alternative 고성능 리튬-황 전지를 위한 황 전극 물질 개발 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000942712 -
dc.description.degree Doctor -
dc.contributor.department Department of Energy Science and Engineering -
dc.contributor.coadvisor Jong-Sung Yu -
dc.date.awarded 2026-02-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.ED 유74 202602 -
dc.date.accepted 2026-01-19 -
dc.contributor.alternativeDepartment 에너지공학과 -
dc.subject.keyword Lithium-Sulfur Batteries, Graphitic Carbon, Sulfur Host, Hierarchical Porous Structure, Hollow-Structure -
dc.contributor.affiliatedAuthor Jeong-Hoon Yu -
dc.contributor.affiliatedAuthor Seung-Tae Hong -
dc.contributor.affiliatedAuthor Jong-Sung Yu -
dc.contributor.alternativeName 유정훈 -
dc.contributor.alternativeName Seung-Tae Hong -
dc.contributor.alternativeName 유종성 -
dc.rights.embargoReleaseDate 2031-02-28 -
Show Simple Item Record

File Downloads

  • There are no files associated with this item.

공유

qrcode
공유하기

Total Views & Downloads

???jsp.display-item.statistics.view???: , ???jsp.display-item.statistics.download???: