声明
Acknowledgements
摘要
Abstract
Table of contents
Chapter 1：Background and literature review
1．1 Introduction
1．2 Principles of Li-ion batteries
1．3 Principles of Lithium-sulfur batteries
1．4 Configuration Lithium-sulfur and Lithium-ion batteries
1．5 Challenges of Li-S batteries
1．5．1 Insulating active materials
1．5．2 Dissolution of polysulndes and the related shuttle effect
1．5．3 Corrosion of Lithium metal
1．5．4 Non soluble lithium sulfide and sulfur plating
1．5．5 Self-discharge
1．5．6 Volume expansion
1．6 Recent advances in Li-S batteries
1．6．1 Sulfur cathodes
1．6．2 Binder
1．6．3 Electrolytes
1．6．4 Lithium anode
1．6．5 Separators
1．7 Applications
1．8 Vocabulary，main characteristics
1．9 Summary
Refrerences
Chapter 2：Experimental approaches
2．1 Chemicals and materials
2．2 Characterization methods
2．2．1 Scanning electron microscope(SEM)
2．2．2 X-ray photoelectron spectroscopy(XPS)
2．2．3 X-Ray diffraction(XRD)
2．2．4 In-situ Ultra-violet／Visible measurements
2．2．6 Brunaeur-emmer-teller(BET)
2．2．7 Thermogravimetric analysis(TGA)
2．3 Preparation of porous carbons (PCs) and polysulfide(PS)
2．3．1 Synthesis of oriented-macroporous-carbon(OMC)
2．3．2 Preparation of dehydrated watermelon rind(WR)
2．3．3 Preparation of starch
2．3．4 PS preparation
2．4 Electrochemical measurement methods
2．4．1 Preparation of S-loaded porous carbons(S@PCs)and cathode
2．4．2 Cell assembly
2．4．3 Galvanostatic cycling
2．4．5 Electrochemical impedance spectroscopy(EIS)
References
Chapter3： Periodical oriented-macroporous-carbon incorporated with γ-Al2O3 for high performance Li-S battery
3．1 Introduction
3．2 Results and discussion
3．2．1 Characterization of oriented-macroporous-carbons
3．2．2 PS absorption with oriented-macroporous-carbon and XPS investigations
3．2．3 Electrochemical performance of oriented-macroporous-carbon
3．3 Summary
References
Chapter 4：Preparation and applications of microporous carbon derived from biomass for high performance Li-S batltery
4．1 Introduction
4．2 Results and discussion
4．2．1 Material characterization
4．2．2 PS adsorption writh WR
4．2．3 Electrochemical performance
4．3 Summary
Refenrences
Chapter 5：A novel insight into cathode deterioration of high energy Li-S battery with heaVy sulfur-loading
5．1 Introduction
5．2 Results and discussion
5．2．1 Materials and cathode characterization
5．2．2 Electrochemical performance
5．3 Summary
References
Chapter 6：Conclusions and future prospective
6．2 Future prospective
List of figures
List of tables
List of publications
