Voltage and electrode surface area

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SUMMARY

The minimum voltage required to initiate the electrolysis process in a brine solution (30%) with a graphite electrode is 1.23 volts, as established in the discussion. It is confirmed that the voltage is independent of the electrode surface area, while the current is directly influenced by it. The relationship between voltage and maximum current is crucial for understanding electrolysis efficiency. For further details, the Wikipedia article on electrolysis of water provides comprehensive insights.

PREREQUISITES
  • Understanding of electrolysis principles
  • Familiarity with brine solutions and their properties
  • Knowledge of current-voltage relationships in electrochemical processes
  • Basic grasp of graphite electrode characteristics
NEXT STEPS
  • Research the electrolysis of water and its voltage requirements
  • Explore the impact of electrode surface area on current output
  • Study the effects of brine concentration on electrolysis efficiency
  • Investigate the thermal effects on electrolysis at 1.23 volts
USEFUL FOR

Electrochemists, chemical engineers, and students studying electrolysis processes will benefit from this discussion, particularly those interested in optimizing electrolysis conditions and understanding the role of voltage and current in electrochemical reactions.

mksrm
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TL;DR
relation between minimum voltage and surface area of electrode
Hi

I am looking to find the equation that determines the minimum (and if possible maximum that might damage the electrode) voltage that starts the electrolysis process for a given area of a graphite electrode in a brine solution medium (lets say 30%) at equilibrium state.

Also how does the relation of voltage and maximum possible current to be applied be determined ?

Any help is greatly appreciated.
 
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Voltage is not electrode surface dependent. Current is.
 
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mksrm said:
Summary: relation between minimum voltage and surface area of electrode

I am looking to find the equation that determines the minimum <<snip>> voltage that starts the electrolysis process

For the Minimum Voltage, the Wikipedia article is pretty good. And as Borek says, the electrode areas affect the current, not this minimum voltage:
Electrolysis of water requires a minimum potential difference of 1.23 volts, though at that voltage external heat is required from the environment.
https://en.wikipedia.org/wiki/Elect...r requires a,is required from the environment.
 

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