Novel Decavanadate Compounds for Lithium-Ion Batteries (eBook)

Author Preamble 6
Table of Contents 7
List of Figures 9
List of Tables 12
Notation 13
List of Abbreviations 14
Abstract 16
1 Introduction 17
1.1 Introduction to Molecular Metal Oxides 17
1.1.1 General Aspects 17
1.1.2 Formation of POMs via Self-assembly 20
1.1.3 Vanadium-based Polyoxometalates 21
1.2 Introduction to Lithium-ion Batteries 25
1.2.1 Electrochemical Fundamentals 26
1.2.2 State-of-the-art LIBs 30
1.2.3 POMs in Electrochemical Energy Storage Application 33
1.3 Short Introduction to Key Measurement Techniques 36
1.3.1 X-ray Diffraction 36
1.3.2 Scanning Electron Microscopy 37
1.3.3 Infrared Spectroscopy 38
1.3.4 Cyclic Voltammetry 39
1.3.5 Galvanostatic Testing 39
2 Objective 41
3 Results and Discussion 43
3.1 Synthesis and Characterization of DMA{V10} 43
3.1.1 Removal of Crystal Water and Structural Stability 48
3.1.2 Morphological Characterization 52
3.1.3 XPS measurement 54
3.2 DMA{V10} as Cathode Material 58
3.2.1 Electrochemical Characterization 64
3.2.2 Post-mortem Analysis 75
3.3 Dehydrated DMA{V10} as Cathode Material 78
3.3.1 Electrode Preparation 79
3.3.2 Electrochemical Characterization 80
3.3.3 Post-mortem Analysis 89
4 Conclusion 91
5 Experimental 96
5.1 Material 96
5.2 Instrumentation 97
5.2.1 Material and Structural Characterization 97
5.2.2 Electrochemical Characterization 98
5.3 Synthesis and Characterization 99
5.3.1 Synthesis of (DMA{V10} 99
5.3.2 Thermal Dehydration of (DMA{V10} 100
5.3.3 Thermal Decomposition of (DMA{V10} 101
5.4 Electrode Preparation 102
5.4.1 Electrode Preparation: E-70 102
5.4.2 Electrode Preparation: E-40 106
5.4.3 Electrode Preparation: E-120-70 109
5.4.4 Electrode Preparation: E-120-40 111
5.5 Crystal Data of (C2H8N)5Li[V10O28]·5H2O 115
References 116