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Hydrogen Fuel Cells - Coggle Diagram

- - - - I will focus on this part
- - - - Polymer Structure
        
        SPEEK: Very regular polymer structure with aromatic rings, which allows it to pack very tightly. Also has sulfonated groups which help it to have proton conductivity. The strong aromatic structure means that it shouldn't degrade too much at higher temperatures.
        
        Nafion isn't very regular. Its structure has hydrophobic and hydrophilic parts, which help it to conduct protons. It also has sulfonic acid groups, which also help it conduct protons. The less regular structure of Nafion should cause it to undergo a decent amount of degradation at higher temperatures.
      - Temperature
        
        SPEEK: Chemically, temperature should help SPEEK conduct protons better because SPEEK doesn't have heavy reliance on water, which means that higher temperatures increase kinetic, which increase proton conductivity.
        
        Nafion: Chemically, temperature helps Nafion conduct protons because it increase the chemical kinetics. However, at high temperatures, where water starts to evaporate, temperatures hurt Nafion's proton conductivity because Nafion requires water to conduct protons effectively. Thus, utilizing higher temperatures would hurt Nafion in terms of proton conduction.
- - - - Different Plate Configuartion
      - Different Material in the Proton Exchange Membrane
        
        Different Types of Materials
        
        Sulfonated tetrafluoroethylene based fluoropolymer-copolymer
        
        Nafion: This is the most used polymer today.
        
        Sulfonated Aromatic Polymers
        
        Sulfonated poly(ether ether) ketone
        
        These could both be compared to see if Sulfonated poly(ether ether) ketone is a good repalcement for the more commonly used Nafion.
        
        Polybenzimidazole Polymers
- - - - DTG analysis
        
        This analysis will showcase the highest points of thermal degradation in the polymers. The thermal analysis will also showcase the biggest rates of changes in the polymer degradation, and allow the phase shifts of the polymers to be understood and completed.
  - - - Converting proton conductivity graphs into Arrhenius graphs
        
        This will provide an overall linear relationship between temperature and proton conductivity, which showcases the overall effectiveness of each polymer to conduct protons at higher temperatures. It also allows activation energy to be deduced, which is helpful in understanding which polymer has a lower activation energy for the protons to move across its membrane effectively.