Table of Contents Abstract 摘要 Acknowledgements Table of Contents List of Figures List of Tables Chapter 1 Introduction 1.1 Background 1.2 Lithium ion Battery components 1.3 The lithium-Ion battery reaction mechanism 1.4 The applications of Lithium ion battery batteries 1.5 Introduction of Solid Electrolyte Interfaces 1.5.1 The Reaction Mechanism of SEI 1.6 Problem Formulation 1.7 Research Purpose Chapter 2 SEI Formation and modification 2.1 SEI Modification on Anode Materials 2.1.1 Silicon Modified Nanowire Surface 2.1.2 Carbon Pretreatment on The SEI Formation 2.2 SEI Modification on Cathode Materials 2.2.1 Layered, Spinel surface modified 2.2.2 Surface Coating 2.3 The modification of SEI on Electrolyte 2.3.1 Lithium Salt 2.3.2 Solvent 2.3.3 Aging Mechanism 2.3.4 Electrolyte Additive Chapter 3 Research Methodology 3.1 Research Design 3.2 Materials 3.3 Equipments 3.4 Experimental procedure 3.4.1 Preliminary Experiment 3.4.2 Electrochemical Measurement Chapter 4 Synthesis of New Additives 4.1 Synthesis Part 4.1.1 Hydrogenetion Part 4.1.2 Dehydration Part 4.2 Characterization Chapter 5 Electrolyte Preparation and Electrochemical Analysis 5.1 Electrolyte Preparation 5.1.1 Blank electrolyte 5.1.2 O-MI additive- based electrolyte 5.1.3 F-MI additive- based electrolyte 5.1.4 2F-MI additive- based electrolyte 5.2 Electrochemical Analysis 5.2.1 Cyclic Voltammetry (CV) 5.2.2 Electrochemical Impedance Spectroscopy (EIS) analysis 5.2.3 Charge and discharge Chapter 6 SEI Evaluation 6.1 SEM and EDX Result 6.2 XPS and NMR Result 6.2.1 XPS analysis 6.2.2 NMR result Chapter 7 Conclusion Reference