Novel Decavanadate Compounds for Lithium-Ion Batteries (eBook)

En Route Towards a New Class of High-performance Energy Materials

Simon Greiner (Autor)

eBook Download: PDF

2020 | 1st ed. 2020
XIX, 107 Seiten
Springer Fachmedien Wiesbaden (Verlag)
978-3-658-28985-0 (ISBN)

Infos

Simon Greiner investigates the molecular-level stabilization of polyoxovanadate (POV) compounds by rational design for the application as active cathode material in lithium-ion batteries. Formation of a complex hydrogen-bonding network locks the POVs in place and prevents thermal decomposition during electrode fabrication. The molecular vanadium oxide clusters can be electrochemically analyzed and show promising results for storage of multiple electrons per cluster, making these materials highly attractive for energy storage applications. Analytical methods comprise ATR-FTIR, powder and single-crystal XRD, electron microscopy, EDX, electrochemical analysis and battery testing.

Simon Greiner obtained his master's degree in chemistry and management at Ulm University, Germany, in cooperation with the Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU). He continues his work on POM-based energy storage materials in the research groups of Prof. Carsten Streb and Prof. Maximilian Fichtner.

Inhalt

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

Produkt-Details

• Erscheint lt. Verlag: 2.1.2020
• Reihe/Serie: BestMasters
• Reihe/Serie: BestMasters
• Zusatzinfo: XIX, 107 p. 71 illus., 9 illus. in color.
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Chemie ► Anorganische Chemie
• Themenwelt: Technik ► Maschinenbau
• Schlagworte: Crystal engineering • Electrochemistry • High-performance Energy Materials • lithium-ion batteries • Novel Decavanadate Compounds • polyoxometalate • Polyoxovanadate • Self-Assembly • stability • Vanadium Oxide
• ISBN-10: 3-658-28985-6 / 3658289856
• ISBN-13: 978-3-658-28985-0 / 9783658289850