Title

Strategy for high performance Li-metal batteries: Uniformly redistributing external pressure with weakly solvating electrolytes

Alternative Title

고성능 리튬금속배터리를 위한 전략: 약한 용매화 전해질 사용과 함께 균일하게 외부 압력을 재분배

DGIST Authors

Byungjun Choi ; Hongkyung Lee ; Young Min Lee

Advisor

이홍경

Co-Advisor(s)

Young Min Lee

Issued Date

2024

Awarded Date

2024-02-01

Citation

Byungjun Choi. (2024). Strategy for high performance Li-metal batteries: Uniformly redistributing external pressure with weakly solvating electrolytes. doi: 10.22677/THESIS.200000730209

Type

Thesis

Description

Anode swelling; Force distribution pad; solvation structure; Li metal anode; Pouch cells

Table Of Contents

List of Contents

Abstract i
List of contents · ii
List of figures · iii

Ⅰ. Introduction
1.1. Current LIB market trends and limitations· 1
1.2. Unique merits of Li-metal anodes (LMAs) 2
1.3. Challenges of lithium metal batteries (LMBs) 3
1.4. Conventional strategies for inhibiting Li dendrite formation 5
1.5. Approach Ⅰ: Applying “Uniform” stack pressure 6
1.6. Approach Ⅱ: Modification of electrolyte chemistry 7
1.7. Research Goals 9

Ⅱ. Experimental Method
2.1. Li metal pouch cells and pressure distribution 10
2.2. Pressure distribution patterns and quantification · 11
2.3. Electrochemical measurements and material characterization 12

Ⅲ. Results and discussion
3.1 Uniformly redistributing external pressure on pouch cell 14
3.2 Modification of electrolyte chemistry 26
3.3 Synergistic effects on Li metal batteries 33

IV. Concluding Remark · 35
References 37
Summary in Korean 42

URI

http://hdl.handle.net/20.500.11750/48093
http://dgist.dcollection.net/common/orgView/200000730209

DOI

10.22677/THESIS.200000730209

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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