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研究生: 楊仁豪
Yang, Jen-Hao
論文名稱: 鋰含量和攝氧量對單晶富鎳LiNi0.8Mn0.1Co0.1O2正極電化學性能提升之研究
Significance of Li Content and Oxygen Uptake on Performance Single-Crystal LiNi0.8Mn0.1Co0.1O2
指導教授: 方冠榮
Fung, Kuan-Zong
學位類別: 碩士
Master
系所名稱: 工學院 - 材料科學及工程學系
Department of Materials Science and Engineering
論文出版年: 2023
畢業學年度: 111
語文別: 英文
論文頁數: 53
中文關鍵詞: 鋰離子電池正極單晶高鎳三元材料衰退機制
外文關鍵詞: lithium-ion battery, cathode, single crystal, high-nickel ternary material, degradation mechanism
相關次數: 點閱:47下載:0
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  • 中文摘要 I Abstract III Table of contents V List of tables VII List of figures VIII Chapter 1: Introduction 1 Chapter 2: literature Review 3 2.1 Working principle of lithium-ion batteries 3 2.2 Different types of cathode materials of lithium-ion batteries 4 2.2.1 Spinel oxides 5 2.2.2 Olivine Oxides 7 2.2.3 Layered Oxides 9 2.3 Single Crystal of Nickel-rich layered oxides 10 2.3.1 Characteristics of single crystal cathode 10 2.3.2 Fracture-resistant particle size of single-crystal 13 2.3.3 Oxygen Release in High Nickel Cathode Materials 15 2.3.4 Effect of Annealing Process on Oxygen Uptake and Enhancement of Layered Structure Stability 17 Chapter 3: Motivation and objective 19 Chapter 4: Experiment 21 4.1 synthesis 21 4.2 X-Ray diffraction 22 4.3 X-Ray photoemission Spectroscopy (XPS) Analysis 22 4.4 Scanning Electron Microscopy 22 4.5 Scanning/Transmission Electron Microscopy 22 4.6 Galvanostatic charge-discharge test 22 4.7 Cyclic voltammetry measurement 23 Chapter 5: The Material Characterization and Electrochemical Performance of LiNi0.8Mn0.1Co0.1O2 Cathode 24 5.1 Structural Characterization of LiNi0.8Mn0.1Co0.1O2 24 5.2 Effect of High Temperature Treatment on Single Crystal processing 29 5.3 Washing process of single crystal LiNi0.8Mn0.1Co0.1O2 31 Chapter 6: Structural Evolution and Electrochemistry of LiNi0.8Mn0.1Co0.1O2 after Cycling 33 6.1 Structural Change of LiNi0.8Mn0.1Co0.1O2 after cycling 33 6.2 Performance improvement of LiNi0.8Mn0.1Co0.1O2 by single crystal process 35 6.3 Galvanostatic Charge-discharge Test 37 Chapter 7: Improvement on Electrochemical Performance of Single Crystal Cathode 40 7.1 Annealing process for single crystal method 40 7.2 The relationship between cation mixing and the formation of Li2O impurity phase 42 7.3 Galvanostatic Charge-discharge Test of Annealed Single Crystal NMC811 44 Chapter 8: Conclusion 47 Chapter 9: Reference 49

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