Electrolysis & PEMs: Positive Electrode, Negative Electrode, O2 Gas

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SUMMARY

The discussion focuses on the operation of Proton Exchange Membrane (PEM) electrolysis, specifically the roles of the positive and negative electrodes in generating O2 gas. It is established that O2 gas forms at the positive electrode during the electrolysis process, while hydrogen gas is produced at the negative electrode. The presence of the PEM enhances efficiency by preventing gas crossover and improving ionic conductivity, which is crucial for optimal performance in water electrolysis applications.

PREREQUISITES
  • Understanding of Proton Exchange Membrane (PEM) technology
  • Knowledge of electrolysis processes and reactions
  • Familiarity with electrode reactions in electrochemical cells
  • Basic principles of gas formation during electrolysis
NEXT STEPS
  • Research the specific reactions occurring at the positive and negative electrodes during PEM electrolysis
  • Explore the advantages of using PEM in electrolysis compared to traditional methods
  • Investigate the impact of temperature and pressure on PEM electrolysis efficiency
  • Learn about advancements in PEM materials and their effects on electrolysis performance
USEFUL FOR

Researchers, engineers, and students in the fields of electrochemistry, renewable energy, and fuel cell technology will benefit from this discussion, particularly those focusing on improving electrolysis efficiency and understanding PEM applications.

nuby
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How would a PEM work with a positive electrode, and negative electrode, with a PEM right between them within water.

Would O2 gas form on the membrane itself? How does this improve efficiency compared to the same cell without a PEM?
 
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Write both electrode reactions.
 

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