서강대학교

목차

Part Ⅰ. Identification and Optimization of Key Factors Governing Silicon Anode Performance 13
1. Introduction 14
2. Experimental 16
2.1 Electrode preparation 16
2.2 Cell fabrication 16
2.3 Electrochemical measurements 17
2.3.1 Galvanostatic charge/discharge cycling 17
2.3.2 Galvanostatic Intermittent Titration Technique(GITT) 17
2.4 Calculation model 17
3. Results and Discussion 21
3.1 Performance enhancement strategy via electrolyte additive engineering 21
3.1.1 Verification of reductive decomposition of FEC additives 21
3.1.2 Electrochemical performance: Impact of FEC additive on cycling 24
3.1.3 Quantitative analysis of degradation behavior with different electrolytes 26
3.2 Formation cycle protocol for cycling optimization 30
3.2.1 Structural analysis 31
3.2.2 Galvanostatic cycling performance at various C-rates 33
3.2.3 Influence of formation protocol on Silicon anodes 37
4. Conclusions 41
References 43

Part Ⅱ. Elucidating Degradation Mechanisms of High-Capacity Silicon Anodes Using Electrochemical Methods 44
1. Introduction 45
2. Experimental 47
2.1 Electrode preparation & cell fabrication 47
2.2 Galvanostatic charge/discharge cycling 48
2.3 Calculation model based on GITT measurement 48
2.4 Characterization 49
3. Results and Discussion 51
3.1 Surface morphology of electrodes with different E/D 51
3.2 Unraveling electrodedensitydriven irreversible reactions in Silicon anodes 53
4. Conclusions 58
References 60