Title

Systematic Study on Electrode Degradation Mechanisms in Fault-simulated Lithium-ion Batteries

Alternative Title

결함 모사 리튬 이온 전지의 전극 열화 거동 분석 연구

DGIST Authors

Seungyeop Choi ; Hongkyung Lee ; Yong Min Lee

Advisor

이홍경

Co-Advisor(s)

Yong Min Lee

Issued Date

2024

Awarded Date

2024-08-01

Citation

Seungyeop Choi. (2024). Systematic Study on Electrode Degradation Mechanisms in Fault-simulated Lithium-ion Batteries. doi: 10.22677/THESIS.200000801556

Type

Thesis

Description

fault-simulated batteries, electrode alignment, electrode delamination, battery failure, lithium-ion batteries

Table Of Contents

Ⅰ. Introduction
1.1 Overview 1

Ⅱ. Study on Li dendrite formation and suppression
in pouch-type lithium-ion batteries with misaligned electrode pairs
2.1 Introduction 3
2.2 Experiment 4
2.2.1 Electrode preparation 4
2.2.2 Fabrication of a single-layer pouch cell 5
2.2.3 Electrochemical analysis 6
2.2.4 Structural analysis 7
2.3 Results & discussion 7
2.4 Conclusion 25
2.5 References 26

III. Study on electrode delamination-induced degradation behavior
in pouch-type lithium-ion batteries
3.1 Introduction 30
3.2 Experiment 31
3.2.1 Electrode preparation 31
3.2.2 Fabrication of a single-layer pouch cell 32
3.2.3 Electrochemical analysis 32
3.2.4 Characterization of a NCM622 cathode 33
3.2.5 Magnetic field imaging analysis 33
3.3 Results & discussion 34
3.3.1 Design and fabrication of the FSBs 34
3.3.2 Structural and electrochemical properties of the FSCs 35
3.3.3 Electrochemical performance of the FSBs 37
3.3.4 Diagnosis of the FSBs 40
3.3.5 Effect of defect location on the degradation of FSBs 42
3.4 Conclusion 45
3.5 References 46
Summary in Korean 50

URI

http://hdl.handle.net/20.500.11750/57622
http://dgist.dcollection.net/common/orgView/200000801556

DOI

10.22677/THESIS.200000801556

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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