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22대 대한민국 국회 국회정보길라잡이 국회의원검색
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국문요약 10

Chapter 1 Introduction 11

1.1 서론 11

1.1.1 리튬이차전지의 구조 13

집전체 13

탄소음극재료 13

음극 및 음극합체 15

양극재료 15

양극 및 양극합체 16

전해액 16

격리막 17

1.1.2 리튬이온 이차전지의 원리 19

1.2 연구 경향 및 목적 23

Chapter 2 이론적 배경(theoretical back ground) 25

2.1 Rocking chair Theory 25

2.2 Concentrated Solution Theory 27

2.3 phase potential 28

Chapter 3 수학적 모델링(mathematical modeling) 30

3.1. 시스템 구성(system description) 30

3.2. 모델의 가정(model assumptions) 32

3.3. 지배방정식(governing equations) 33

3.3.1 Butler-Volmer electrode kinetics 33

3.3.2 Species Conservation Equations 36

3.3.3 Charge Conservation Equations 37

3.3.4 Thermal Energy Conservation Equation 39

3.3.5 Thermal and Electrochemical Coupling 42

3.4 Initial and Boundary Conditions 44

3.5 모델의 수행 45

Chapter 4 Results and Discussion 47

4.1 Li ion concentration 47

4.2 Electrolyte potential 52

4.3 Solid potential 53

4.4 Temperature 58

4.5 Cell potential 66

4.6 effect of aspect ratio 67

Chapter 5 Conclusions 70

Symbols 72

Reference 76

Abstract 78

표목차

Table 3.1 parameter values 40

Table 3.2 activation energy 43

Table 3.3 Initial condition 43

그림목차

Figure 1.1 Structure of Lithium ion battery 14

Figure 2.1 The rocking chair principle of the lithium ion cell 26

Figure 2.2 Solid and electrolyte phases potential distribution 29

Figure 3.1 Schematic of a lithium ion cell and model representation 31

Figure 4.1.1 Electrolyte phase concentration profile at DOD 0.6 48

Figure 4.1.2 Solid phase concentratioigure concentration profile at DOD 0.6 49

Figure 4.1.3 Contours oigure of electrolyte phase concentration profile 51

Figure 4.2.1 Electrolyte phase potential profile at DOD 0.8 54

Figure 4.2.2 Contour of electrolyte phase potential profile at DOD 0.8 55

Figure 4.3.1 Solid phase potential profile at DOD 0.8 56

Figure 4.3.2 Contour of electrolyte phase potential profile at DOD 0.8 57

Figure 4.4.1 cell temperature evolution. Comparison between the couple model and decoupled model 60

Figure 4.4.2 Heat generation rates of electrode reaction at DOD 0.6 61

Figure 4.4.3 Heat generation rates of joule heating at DOD 0.6 61

Figure 4.4.4 Contour of cell temperature at decoupled model 63

Figure 4.4.5 Contour of cell temperature at coupled model 64

Figure 4.4.6 cell temperature evolution at decoupled model. Comparison between the 1-D model and 2-D model 65

Figure 4.4.7 cell temperature evolution at coupled model. Comparison between the 1-D model and 2-D model 65

Figure 4.6.1 Celigure Cell potential Comparison between the couple model and decoupled model 68

Figure 4.7.1 Effect of aspect ratio on the temperature evolution 69

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