Lead Dioxide Anode: Why Not Use Lead Strip?

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SUMMARY

The discussion centers on the use of lead strips as an anode in lead acid batteries, questioning why this method is not commonly employed despite its simplicity. The participant notes that while lead dioxide is typically plated on carbon for durability, using bare lead has been effective in their experiments. The primary concern with using lead strips lies in the generation of a robust lead dioxide layer that can withstand operational stresses such as high current densities and thermal gradients. The conversation highlights the historical context of battery manufacturing, indicating that bare lead was once the standard before the introduction of lead dioxide plating.

PREREQUISITES
  • Understanding of electrolysis and its role in battery chemistry
  • Familiarity with lead acid battery construction and operation
  • Knowledge of anode materials and their properties
  • Basic principles of electrochemical reactions and oxidation processes
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  • Research the properties of lead dioxide and its formation on various substrates
  • Explore the effects of current density and thermal gradients on anode performance
  • Investigate historical methods of lead acid battery manufacturing
  • Examine patents related to lead dioxide anode technology for innovative applications
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Battery engineers, materials scientists, and anyone involved in the development or optimization of lead acid battery technologies.

RayRoc
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I usually plate lead dioxide on carbon to form my anodes, however, I was wondering if anyone knew why one can't use a lead strip and let electrolysis oxidize the surface to lead dioxide? It is too simple for it not to be used already. But I did make a set of lead acid batteries by just using the lead strips with no lead dioxide and it worked fine. I was wondering if anyone had some insight on the subject.
 
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I believe using bare lead was the original method of making batteries, plating with oxide is relatively new way of making batteries that are already charged even before they are filled with acid.
 
The problem is much less one of generating PbO2, but generating it in a way
that makes it sufficiently hardy to not deteriorate (i.e. flake off) during use as
an anode, possibly with high current densities, thermal gradients etc. etc.

You can find some patents and recipes by googling.

Ray
 

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