功能化纳米材料对磺化聚醚醚酮质子交换膜的质子传导率和甲醇渗透率的影响

发布时间：2021-08-10 02:28

　　Sulfonated polyether ether ketone（sPEEK）is currently under investigation as a substitute to the expensive Nafion（?）polymer electrolyte membrane because of its low cost,higher physicochemical stabilities,low fuel permeation and higher proton conductivities.Sulfonic acid group is hydrophilic in nature and hence is the key source of proton transfer in polymer electrolyte membranes.For higher proton conductivity in sPEEK membrane high degree of sulfonation（DS）is required which often results in dimen... 

【文章来源】：安徽师范大学安徽省

【文章页数】：125 页

【学位级别】：博士

【文章目录】：
Acknowledgements
List of symbols and abbreviations
Abstract
CHAPTER 1: Introduction
    1.1.Fuel Cell
    1.2.History of fuel cell development
    1.3.Types of fuel cells
    1.4.Polymer electrolyte membrane fuel cell (PEMFC)
    1.5.Direct methanol fuel cell (DMFC)
        1.5.1.Reaction and thermodynamic values
    1.6.Nafion(?) membrane
    1.7.Sulfonated polyether ether ketone
    1.8.Project justification
CHAPTER 2: Experimental
    2.0.Materials and chemicals
    2.1.Sulfonation of TiO_2 and ZrO_2
    2.2.Preparation of graphene oxide (GO)
    2.3.Preparation of TNT/GO (TG), ZrO_2/GO (ZG) and TNT-ZrO_2-GO (TZG)
    2.4.Sulfonation of GO, TG, ZG and TZG nanocomposites
    2.5.Sulfonation of polyether ether ketone (PEEK)
    2.6.Preparation of membranes
    2.7.Characterization
        2.7.1.Morphological properties
        2.7.2.X-ray diffraction analysis
        2.7.3.X-ray photoelectron spectroscopy (XPS)
        2.7.4.Thermogravimetric analysis (TGA)
        2.7.5.Tensile properties
        2.7.6.Water uptake
        2.7.7.Methanol permeability
        2.7.8.Ion exchange capacity (IEC)
        2.7.9.Proton conductivity
CHAPTER 3: Results and discussion
    3.1.sPEEK/SGO (SP-SG-X) membrane
        3.1.1.Morphological properties
        3.1.2.GO and SGO XRD analysis
        3.1.3.GO and SGO XPS analysis
        3.1.4.TGA analysis
        3.1.5.Tensile properties
        3.1.6.Methanol permeation
        3.1.7.Water uptake
        3.1.8.Ion exchange capacity (IEC)
        3.1.9.Proton conductivity
    3.2.sPEEK/S-TiO_2 (SP-ST-X) membrane
        3.2.1.Morphological properties
        3.2.2.XRD analysis
        3.2.3.TiO_2 and S-TiO_2 XPS analysis
        3.2.4.TGA analysis
        3.2.5.Tensile properties
        3.2.6.Methanol permeation
        3.2.7.Water uptake
        3.2.8.Ion exchange capacity (IEC)
        3.2.9.Proton conductivity
    3.3.sPEEK/S-ZrO_2 (SP-SZ-X) membrane
        3.3.1.Morphological properties
        3.3.2.XRD analysis
        3.3.3.ZrO_2 and S-ZrO_2 XPS analysis
        3.3.4.TGA analysis
        3.3.5.Tensile properties
        3.3.6.Methanol permeation
        3.3.7.Water uptake
        3.3.8.Ion exchange capacity (IEC)
        3.3.9.Proton conductivity
    3.4.sPEEK/STG (SP-STG-X) membrane
        3.4.1.Morphological properties
        3.4.2.XRD analysis
        3.4.3.TG and STG XPS analysis
        3.4.4.TGA analysis
        3.4.5.Tensile properties
        3.4.6.Methanol permeation
        3.4.7.Water uptake
        3.4.8.Ion exchange capacity (IEC)
        3.4.9.Proton conductivity
    3.5.sPEEK/SZG (SP-SZG-X) membrane
        3.5.1.Morphological properties
        3.5.2.XRD analysis
        3.5.3.ZG and SZG XPS analysis
        3.5.4.TGA analysis
        3.5.5.Tensile properties
        3.5.6.Methanol permeation
        3.5.7.Water uptake
        3.5.8.Ion exchange capacity (IEC)
        3.5.9.Proton conductivity
    3.6.sPEEK/STZG (SP-STZGX) membrane
        3.6.1.Morphological properties
        3.6.2.XRD analysis
        3.6.3.TZG and STZG XPS analysis
        3.6.4.TGA analysis
        3.6.5.Tensile properties
        3.6.6.Methanol permeation
        3.6.7.Water uptake
        3.6.8.Ion exchange capacity (IEC)
        3.6.9.Proton conductivity
    3.7.Membranes with the highest electrochemical performance
Conclusion
References



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