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How did Sir Humphry Davy isolate potassium metal?

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A periodic table element box for potassium shows atomic number 19, symbol K, atomic weight 39.0983, electron configuration [Ar]4s1, and name potassium. Icons indicate it is an alkali metal, solid at room temperature, body-centered cubic crystal structure, and has strongly basic higher-valence oxides. A key explains the symbols for alkali metals, solid state, body-centered cubic structure, and strong basicity. — potassium Properties of potassium.

In 1807, the English chemist Sir Humphry Davy successfully isolated potassium by using electrolysis, a process he pioneered to decompose chemical compounds into their constituent elements.12

Davy achieved this by applying an electric current from a voltaic battery to molten potassium hydroxide (KOH). By passing this current through the compound, he was able to break the chemical bonds and isolate the metal for the first time. This discovery was significant, as potassium became the first metal to be isolated through the method of electrolysis.12