Gaseous and Electrochemical Hydrogen Storage Properties of Mg-Based Thin Films (eBook)

Parts of this thesis have been published in the following journal articles: 6
Supervisor's Foreword 7
Acknowledgments 9
Contents 10
1 Introduction 13
1.1 Hydrogen Energy and Hydrogen Storage Materials 13
1.1.1 The Signi?cance of Hydrogen Energy 13
1.1.2 Characteristics and Research Status of Hydrogen Energy 15
1.1.3 Research Progress of Hydrogen Storage Materials 16
1.1.4 Research Progress of Mg-Based Hydrogen Storage Materials 20
1.1.4.1 Fabricating Particular Nanostructures 24
1.1.4.2 Doping Catalysts 27
1.1.4.3 Recombination with Porous Materials 33
1.2 Hydrogen Storage Properties of Mg-Based Films 35
1.2.1 Preparation and Characterization of Mg-Based Films 36
1.2.2 Research Progress of Mg-Based Hydrogen Storage Films 36
1.3 Hydrogen-Induced Property Changes of Thin Films and the Applications 39
1.4 Contents of This Thesis 41
References 44
2 Experimental Methods 53
2.1 Film Preparation 53
2.2 Thin Film Characterization 54
2.2.1 X-Ray Di?raction 54
2.2.2 Scanning Electron Microscope/Energy Dispersive Spectrum Analysis (SEM/EDS) 54
2.2.3 Transmission Electron Microscopy (TEM) 55
2.3 Property Measurements of Thin Films 55
2.3.1 Electrical Resistance Measurements [1–3] 55
2.3.2 Optical Transmittance Measurements [1–3] 56
2.3.3 Electrochemical Property Measurements [5, 6] 57
References 58
3 Structural Tailoring of Mg-Based Thin Films and Study of Their Hydrogen Storage Properties 59
3.1 Introduction 59
3.2 Experimental 60
3.2.1 Film Preparation 60
3.2.2 Structural Characterization and Property Measurements 60
3.3 Results and Discussion 61
3.3.1 Gaseous Hydrogen Storage Properties 61
3.3.1.1 Structural Characterization 61
3.3.1.2 Electrical and Optical Properties 61
3.3.1.3 Hydrogen Sorption Kinetics 64
3.3.2 Electrochemical Hydrogen Storage Properties 67
3.3.3 Discussions 69
3.4 Conclusions 70
References 70
4 Hydrogen Storage Properties of Mg-Based Thin Films with Di?erent Interlayers 72
4.1 Introduction 72
4.2 Experimental 73
4.2.1 Film Preparation 73
4.2.2 Structural Characterization 73
4.3 Results and Discussion 74
4.3.1 Hydrogen Storage Properties of Mg–Ti–Pd Films 74
4.3.1.1 Structural Characterization 74
4.3.1.2 Electric Resistance Changes 74
4.3.1.3 Optical Switching Properties 76
4.3.1.4 Electrochemical Behaviors 79
4.3.2 Hydrogen Storage Properties of Mg–Al–Pd Films 81
4.3.2.1 Electric Resistance Changes 81
4.3.2.2 Optical Switching Properties 83
4.3.3 Mechanism and Discussion 86
4.4 Conclusions 90
References 90
5 Gaseous and Electrochemical Hydrogen Storage Properties of Mg–Ti Multilayers 91
5.1 Introduction 91
5.2 Experimental 92
5.2.1 Film Preparation 92
5.2.2 Structural Characterization 92
5.3 Results and Discussion 93
5.3.1 Gaseous Hydrogen Storage Properties 93
5.3.1.1 Structural Characterization 93
5.3.1.2 Electric Resistance Changes 94
5.3.1.3 Optical Switching Properties 96
5.3.1.4 Gaseous Hydrogenation Mechanism 98
5.3.2 Electrochemical Properties 100
5.3.2.1 Electrochemical Charge–Discharge Properties 100
5.3.2.2 Electrochemical Hydrogenation Mechanism 104
5.4 Conclusions 105
References 105
Chapter 6Effects of Different Mg/Ti Ratioson the Electrochemical HydrogenStorage Properties of MgxTi1?x–Pd Films 106
6.1 Introduction 106
6.2 Experimental 107
6.2.1 Film Preparation 107
6.2.2 Structural Characterization and Electrochemical Measurements 107
6.3 Results and Discussion 107
6.3.1 Structural Characterization 107
6.3.2 Electrochemical Properties 108
6.3.3 Mechanism of Electrochemical Hydrogen Storage 111
6.4 Conclusion 113
References 113
7 Conclusions and Outlook 115
7.1 Conclusions 115
7.2 Outlook 116