Title

Surface Adaptive Dual-Layer Protection of Li-metal Anode for Extending Cycle-life of Li-Sulfur Batteries with Lean Electrolyte

DGIST Authors

Bokyung Choi ; Hongkyung Lee ; Yong Min Lee

Advisor

이홍경

Co-Advisor(s)

Yong Min Lee

Issued Date

2024

Awarded Date

2024-02-01

Citation

Bokyung Choi. (2024). Surface Adaptive Dual-Layer Protection of Li-metal Anode for Extending Cycle-life of Li-Sulfur Batteries with Lean Electrolyte. doi: 10.22677/THESIS.200000728079

Type

Thesis

Description

Surface-adaptive protection;Dual-layer structural protection;Li-S batteries;Li-metal anodes;Lean electrolytes

Table Of Contents

Ⅰ. Introduction 1
1.1. Lithium Secondary Batteries 1
1.1.1. Historical Background 1
1.1.2. Operating Principles of Rechargeable Lithium-Ion Batteries · 2
1.1.3. Next Generation Batteries: Revisiting Li Metal Anode 3
1.2. Ultra-light Lithium-Sulfur Batteries 3
1.2.1. Cell Configuration and Basic Principles · 3
1.2.2. Challenges 5
1.2.3. Requirements for High-Energy Cell Design 6
1.2.4. Challenges under Lean Electrolyte Conditions 7
1.3. Introducing Protective Layer 8
1.4. Research Goals 11

Ⅱ. Experimental Method 13
2.1. Preparation of PL-Li 13
2.2. Material Characterization 13
2.3. Electrochemical measurements 13
2.4. Postmortem analysis 14
2.5. Computational simulation 14

Ⅲ. Results and discussion 16
3.1. Unraveling the degradation modes of model PLs 16
3.2. Finding key factors for designing surface adaptive PLs · 23
3.3. Design surface adaptive dual protection layer (APL) · 30

IV. Concluding Remark 36
References · 37
Summary in Korean · 42

URI

http://hdl.handle.net/20.500.11750/48094
http://dgist.dcollection.net/common/orgView/200000728079

DOI

10.22677/THESIS.200000728079

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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