声明
摘要
ABSTRACT
STUDY MOTIVATIONS AND GOALS
CHAPTER 1：INTRODUCTION
1．2 ELECTROCHEMICAL ENERGY STORAGE SYSTEMS
1．2．1 Batteries
1．2．2 Capacitors
1．2．3 Supercapacitors
1．2．4 Types of Supereapacitors
1．3 ELECTROCHEMICAL PROPERTIES OF SUPERCAPACITORS
1．4 ELECTRODE MAlTERIALS FOR SUPERCAPACITORS
1．4．1 EDLCs Electrode Materials
1．4．2 Pseudocapacitor Electrode Materials
1．4．3 Hybrid Composite Materials
1．4．4 Ternary Composites(Carbons-Metal Oxides-Conducting Polymers)
1．5．1 Liquid Electrolytes
1．5．2 Solid or Quasi-solid Electrolytes
1．7 SEPARATORS
1．8 SUPERCAPACITOR DESIGN
References
CHAPTER 2：LOW-COST，HIGH-PERFORMANCE SUPERCAPACITOR BASED ON ACTIVATED CARBONELECTRODE MATERIALS DERIVED FROM BAOBAB FRUIT SHELLS
2．1．INTRODUCTION
2．2 EXPERIMENTAL SECTIOPN
2．2．1 Preparation of Baobab Fruit Shell Derived Carbon Using KOH Activation
2．2．3 Preparation of the Electrodes and the Supercapaeitor Devices
2．2．4 Material Characterizations
2．2．5 Electrochemical Measurements
2．3 RESULTS AND DISCUSSION
2．3．1 The Morphology and Texture Characterization
2．3．2 The Electrochemical Performance
2．4 CONCLUSIONS
References
CHAPTER 3：GREEN AND HIGH PERFORMANCE ALL-SOLID-STATE SUPERCAPACITORS BASED ON MnO2／FAIDHERBIA ALBIDA FRUIT SHELL DERIVED CARBON SPHERE ELECTRODES
3．1 INTRODUCTION
3．2 EXPERIMENTAL SECTION
3．2．3 Synthesis of Symmetric and Asymmetric All-Solid-State Supercapacitors
3．2．4 Materials Characterization
3．2．5 Electrochemical Characterization
3．3 RESULTS AND DISCUSSION
3．3．1 Physieochemical Characterization of As-prepared Electrode Materials
3．3．2 Electrochemical Characterization of As-prepared Electrode Materials
3．3．3 Electrochemical Characterization of the Flexible All-Solid-State Supercapacitors
3．4 CONCLUSIONS
References
CHAPTER 4：FLEXIBLE ASYMMETRIC SUPERCAPACITOR BASED ON HYPHANE FRUIT HELL-DERIVED MULTI-HYTOATOM-DOPED CARBON AND NiMoO4／NiCo2O4 HYBRID STRUCTURE ELECTRODES
4．1 INTRODUCTION
4．2 EXPERIMENTAL SECTION
4．2．1 Preparation of Hyphaene Fruit Shell-derived Carbons(HFSCs)
4．2．2 Preparation of NiMoO4／NiCo2O4 on Ni foam
4．2．3．Synthesis of Asymmetric Supercapacitor Device
4．2．4 Material Characterization
4．2．5 Electrochemical Charaeterization
4．3 RESULTS AND DISCUSSION
4．3．1 Hyphaene Fruit Shell-derived Carbons(Negative Electrode)
4．3．2 Electrochemical Performance of the As-prepared Carbon-based Electrodes(HFSCs)
4．3．3 NiMoO4／NiCo2O4(Positive Electrode)
4．3．4 Asymmetric Supereapaeitor Performance
4．4 CONCLUSION
References
CHAPTER：5 CONCLUSION AND FUTURE WORK
Publications
ACKNOWLEDGEMENTS
