钨、硼、氮掺杂改性纳米碳纤维及其氧还原活性的研究
TUNGSTEN, BORON AND NITROGEN DOPEDCARBON NANOFIBERS AND THEIR ACTIVITYFOR OXYGEN REDUCTION REACTION
摘要
ABSTRACT
ACKNOWLEDGEMENTS
CONTENTS
LIST OF TABLES
LIST OF FIGURES
CHAPTER 1 INTRODUCTION
Introduction to fuel cells
Oxygen reduction reaction (ORR) of fuel cells
Electrocatalysts for oxygen reduction in fuel cells
Non-noble metal electrocatalysts
N-doped carbon material electrocatalysts
Nitrogen doping methods
Tungsten carbide electrocatalysts
Electrospinning technology
Basic principles
Influence factors of electrospinning
Major work of my research
CHAPTER 2 EXPERIMENTAL METHODS
Preparation of catalysts
Preparation of WC coated CNF catalysts
Preparation of N-doped CNF catalysts
Preparation of B- and N-codoped CNF catalysts
Catalyst characterization
TGA-DSC
SEM/EDX
XRD
FTIR Spectroscopy
Raman Spectroscopy
Cyclic Voltammetry (CV) and Rotating Disk Electrode (RDE)
Working electrodes (WE)
Counter electrode (CE)
Reference electrode (RE)
Electrolytes and electrochemical set-up
CHAPTER 3 PREPARATION OF WC/CNF CATALYSTS AND THEIR ELECTROCATALYTIC ACTIVIES FOR ORR
Stabilization of PAN nanofibers
Characterization of WC/CNF catalysts
SEM characterization
XRD and EDX analysis
Electrochemical testing results
Conclusion
CHAPTER 4 PREPARATION OF N-DOPED CNF CATALYSTS AND THEIR ELECTROCATALYTIC ACTIVIES FOR ORR
Introduction
Characterizations of N-doped CNF catalysts
SEM characterization
Raman spectroscopy analysis
EDX and FTIR spectra analysis
XPS analysis
Measurement of electrocatalytic activity of N-CNFs
CV testing results
RDE testing results
Conclusion
CHAPTER 5 PREPARATION OF B- AND N-CODOPED CNF CATALYSTS AND THEIR ELECTROCATALYTIC ACTIVIES FOR ORR
Characterization of boron carbonitride nanofibers
SEM characterization
FTIR analysis
Measurement of electrocatalytic activity of boron carbonitride nanofibers
Characterization of BN/CNF catalysts
SEM characterization
FTIR analysis
Measurement of electrocatalytic activity of BN/CNFs
Conclusion
CONCLUSIONS
REFERENCES
PATENTS
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