Title

A bis(2-fluoroethyl) carbonate as a new electrolyte additive for enhancing the long-term cycle performance of Li-metal batteries

Alternative Title

신규 전해액 첨가제인 bis(2-fluoroethyl) carbonate 도입에 따른 리튬 금속 전지의 장기 사이클 특성 향상

DGIST Authors

Jiwon Han ; Yong Min Lee ; Hongkyung Lee

Advisor

이용민

Co-Advisor(s)

Hongkyung Lee

Issued Date

2023

Awarded Date

2023-02-01

Citation

Jiwon Han. (2023). A bis(2-fluoroethyl) carbonate as a new electrolyte additive for enhancing the long-term cycle performance of Li-metal batteries. doi: 10.22677/THESIS.200000655291

Type

Thesis

Description

Bis(2-fluoroethyl) carbonate, Electrolyte additive, Li metal anode, Cycle performance, Li metal battery

Table Of Contents

Ⅰ. Introduction 1
1.1 Overview 1
Ⅱ. A bis(2-fluoroethyl) carbonate as a new electrolyte additive for enhancing the long-term cycle performance of Li-metal batteries 3
2.1 Introduction 3
2.2 Experiment 5
2.2.1 Synthesis of B-FEC 5
2.2.2 Characteristic of B-FEC 6
2.2.3 Preparation of electrode and electrolyte 6
2.2.4 Electrochemical measurements 6
2.2.5 Postmortem analysis 7
2.3 Results and discussion 7
2.3.1 Structural analysis of B-FEC 8
2.3.2 Molecular orbital energy levels of electrolyte components 8
2.3.3 Optimization of B-FEC amount 10
2.3.4 Electrochemical performance of B-FEC 12
2.3.5 Surface analysis of Li metal through XPS 17
2.3.6 SEM images of Li metal after cycling 18
2.4 Conclusion 20
References 21
Summary (in Korean) 24

URI

http://hdl.handle.net/20.500.11750/45741
http://dgist.dcollection.net/common/orgView/200000655291

DOI

10.22677/THESIS.200000655291

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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