I'm not sure my question belongs here or in the physics section(adsbygoogle = window.adsbygoogle || []).push({});

I'm aware that in addition to the poisson-boltzmann equation, there's also the Debye-Huckel approximation, which is used at low ionic strengths and dilute solutions. I also know that the Stern layer includes the finite size of ions and studies how surfaces are affected

However, what other models exist? And what other details about the Stern layer and Debye-Huckel approximation are important that I forgot to mention?

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# Additional models to Poisson-Boltzmann equation?

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