Detail View

  Department of Energy Science and Engineering Theses Ph.D.

Synthetic Preparation of Transition Metal Compound Composites for High-Performance Lithium-Sulfur Batteries

Citations

WEB OF SCIENCE

Citations

SCOPUS

Metadata Downloads

XML
Excel
DC Field Value Language
dc.contributor.advisor 양지웅 -
dc.contributor.author Yu Bo -
dc.date.accessioned 2026-01-23T10:54:12Z -
dc.date.available 2026-01-23T10:54:12Z -
dc.date.issued 2026 -
dc.identifier.uri https://scholar.dgist.ac.kr/handle/20.500.11750/59621 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000942693 -
dc.description lithium–sulfur batteries, NiCoO2–(Ni,Co)Se2 nanorods, titanium monoxide, N-doped graphitized porous carbon, polysulfides adsorption and catalytic conversion. -
dc.description.tableofcontents ABSTRACT i
List of Contents iv

Chapter 1. Background 1
1.1 Global energy challenges 1
1.2 Lithium-sulfur batteries: overview and promise 1
1.3 Major challenges in lithium-sulfur battery development 2
1.4 Strategies for performance enhancement 4
1.5 Role of transition metal compound composites 5
1.6 Design principles 6
1.7 Research progress and representative approaches 7
1.8 Outlook and significance 8
1.9 Summary 8
1.10 References 9
Chapter 2: Construction of NiCoO2-(Ni,Co)Se2 hybrid nanorods as an effective bifunctional interlayer for lithium-sulfur batteries 10
2.1 Introduction 10
2.2. Experimental sections 11
2.2.1 Materials 11
2.2.2 Synthesis of NiCo composite 12
2.2.3 Synthesis of NiCoO2-(Ni,Co)Se2 hybrid nanorods 12
2.2.4 Construction of PP separator coated NiCoO2-(Ni,Co)Se2 hybrid nanorods 13
2.2.5 Preparation of S cathode 13
2.2.6 Adsorption test of LiPSs 14
2.2.7 Assembly of Li2S6 symmetric cells 14
2.2.8 Li+ diffusion coefficient of the Li-S full cell with NCOSe/PP separator 14
2.2.9 Contact angle test between different separators and the electrolyte 14
2.2.10 Diffusion of Li2S6 solution in H-type cell with different separators 15
2.2.11 Materials characterization 15
2.2.12 Battery assembly and electrochemical measurements 16
2.3 Results and discussions 16
2.4 Conclusions 34
2.5 References 34
Chapter 3. Magnesiothermically Synthesized TiO-decorated 3D N-doped Graphitized Porous Carbon for Li–S Batteries: Enhanced Conductivity, Polysulfides Trapping and Accelerated Redox Kinetics 41
3.1 Introduction 41
3.2. Experimental section 43
3.2.1 Reagents and materials 43
3.2.2 Materials characterization 43
3.2.3 Density functional theory calculations methods 44
3.2.4 Synthesis of TiO-decorated 3D N-doped graphitized porous carbon 45
3.2.5 Preparation of sulfur cathode 46
3.2.6 Adsorption test of LiPSs 47
3.2.7 Assembly of Li2S6 symmetric cells 47
3.2.8 The precipitation test of Li2S 47
3.2.9 Li+ diffusion coefficient 48
3.2.10 Coin cell assembly and electrochemical measurements 48
3.2.11 In-situ XRD analysis test 49
3.2.12 Pouch cell assembly and performance evaluation 49
3.3 Results and discussions 50
3.3.1 Fabrication of TiO-NGPC/S 50
3.3.2 Characterization of the TiO-NGPC 50
3.3.3 Electrochemical characterization of Li–S full cell with the TiO-NGPC/S 64
3.3.4 Characterization of the adsorption and catalytic performance mechanism of the TiO-NGPC 70
3.3.5 Characterization of In-situ XRD and performance of pouch cell 77
3.4 Conclusions 79
3.5 References 80
요 약 문 88		 -
dc.format.extent 91 -
dc.language eng -
dc.publisher DGIST -
dc.title Synthetic Preparation of Transition Metal Compound Composites for High-Performance Lithium-Sulfur Batteries -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000942693 -
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 Y94 202602 -
dc.date.accepted 2026-01-19 -
dc.contributor.alternativeDepartment 에너지공학과 -
dc.subject.keyword lithium–sulfur batteries, NiCoO2–(Ni,Co)Se2 nanorods, titanium monoxide, N-doped graphitized porous carbon, polysulfides adsorption and catalytic conversion. -
dc.contributor.affiliatedAuthor Yu Bo -
dc.contributor.affiliatedAuthor Jiwoong Yang -
dc.contributor.affiliatedAuthor Jong-Sung Yu -
dc.contributor.alternativeName 유보 -
dc.contributor.alternativeName Jiwoong Yang -
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???: