Tailoring ionic structures in Locally concentrated ionic liquid electrolytes for safe, stable cycling of high-voltage Li metal batteries
- Title
- Tailoring ionic structures in Locally concentrated ionic liquid electrolytes for safe, stable cycling of high-voltage Li metal batteries
- Author(s)
- Gunyoung Kim
- DGIST Authors
- Gunyoung Kim ; Hongkyung Lee ; Hochun Lee
- Advisor
- 이홍경
- Co-Advisor(s)
- Hochun Lee
- Issued Date
- 2023
- Awarded Date
- 2023-02-01
- Type
- Thesis
- Description
- High voltage Li metal batteries, Locally concentrated ionic liquid electrolyte, Solvation structure, Solid electrolyte interphase
- Table Of Contents
-
Ⅰ. Introduction
1.1 Basic principles of Li secondary batteries 1
1.2. Li-metal Battery 2
1.2.1 Merits of Li-metal anode 2
1.2.2 Challenges of Li-metal Anode 3
1.2.3 Evaluation of Li reversibility 4
1.2.4 Effects of cell parameters and operation conditions 6
1.3 Electrolyte System 7
1.3.1 Basic Concepts of Solvation Chemistry 7
1.3.2 Molecular Dynamics 8
1.3.3 Raman spectroscopy 9
1.4 Electrode-Electrolyte Interphase 10
1.4.1 Solid-Electrolyte Interphase (SEI) 10
1.4.2 Cathode-Electrolyte interphase (CEI) 11
1.5. Research Goals 12
Ⅱ. Experimental Method
2.1. Preparation of Electrode and Electrolytes 14
2.2. Electrochemical measurements 14
2.3. Characterizations 15
Ⅲ. Results and discussion
3.1 Designing LCIL (dilution effects of LCIL) 17
3.2 Ionic liquid’s cation effects in LCIL 29
3.3 Additives in LCIL 36
IV. Concluding Remark 39
References 40
Summary in Korean 46
- URI
-
http://hdl.handle.net/20.500.11750/45727
http://dgist.dcollection.net/common/orgView/200000657981
- Degree
- Master
- Department
- Department of Energy Science and Engineering
- Publisher
- DGIST
- Related Researcher
-
-
Lee, Hongkyung
- Research Interests Batteries; Electrochemistry; Interfaces
-
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-
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- Appears in Collections:
- Department of Energy Science and Engineering Theses Master
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