Title

Design of Flame-Retardant Electrolytes for Safe and Durable Lithium Metal Batteries

DGIST Authors

Changeui Yang ; Hochun Lee ; Yong Min Lee

Advisor

이호춘

Co-Advisor(s)

Yong Min Lee

Issued Date

2025

Awarded Date

2025-02-01

Citation

Changeui Yang. (2025). Design of Flame-Retardant Electrolytes for Safe and Durable Lithium Metal Batteries. doi: 10.22677/THESIS.200000828403

Type

Thesis

Description

Lithium metal batteries, flame-retardant electrolytes, ionic liquids, sulfone-based electrolytes, deep eutectic solvents, thermal stability, dendrite suppression

Table Of Contents

List of Contents

Ⅰ. INTRODUCTION 1
Ⅱ. Impact of Ionic Liquid Cation-Diluent Interactions on the Reductive Decomposition of Lithium Metal Battery Electrolytes
2.1 Introduction 5
2.2 Experimental 7
2.2.1 Materials 7
2.2.2 Electrochemical measurements 7
2.2.3 Characterization 7
2.3 Results and discussion 9
2.4 Conclusions 16
Ⅲ. Development of Electrolytes for Enhanced Lithium Metal Compatibility and Stable Battery Lifespan through the Using of Non-Interacting Diluents for Ionic Liquid Cations
3.1 Introduction 17
3.2 Experimental 19
3.2.1 Materials 19
3.2.2 Electrochemical measurements 19
3.2.3 Characterization 20
3.3 Results and discussion 21
3.4 Conclusions 29
Ⅳ. Non-flammable dimethyl sulfone-based gel polymer electrolyte for safe lithium metal batteries
4.1 Introduction 30
4.2 Experimental 32
4.2.1 Materials 32
4.2.2 Characterization 32
4.2.3 Electrochemical measurements 33
4.3 Results and discussion 35
4.4 Conclusions 46
Ⅴ. Synergistic Effects of Dimethyl sulfone and N,N-Dimethylmethanesulfoneamide for Improved Stability and Safety in Lithium Metal Batteries
5.1 Introduction 47
5 .2 Experimental 49
5.2.1 Materials 49
5.2.2 Characterization 49
5.2.3 Electrochemical measurements 50
5.3 Results and discussion 52
5.4 Conclusions 63
Ⅵ. Enhancing Lithium Metal Battery Stability and Safety Using Sulfone-Based Crystalline Organic Electrolytes with Optimized Diluents
6.1 Introduction 65
6.2 Experimental 68
6.2.1 Materials 68
6.2.2 Characterization 68
6.2.3 Electrochemical measurements 69
6.3 Results and discussion 71
6.4 Conclusions 82
Reference 83
Summary (in Korean) 91

URI

http://hdl.handle.net/20.500.11750/57984
http://dgist.dcollection.net/common/orgView/200000828403

DOI

10.22677/THESIS.200000828403

Degree

Doctor

Department

Department of Energy Science and Engineering

Publisher

DGIST

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