My question is quite straightforward: would a theoretical cell with fluorine and lithium yield the highest possible standard potential of all?

The table of Standard electrode potential in Wikipedia lists several potentials that are "better" than those of lithium and fluorine but I am skeptical about those values. The more common tables often list lithium with a potential of -3.040 volts and fluorine with a potential of 3.053 volts. Thus the standard potential gives 6.093 volts. However, can this number be improved? Are there materials that have more negative potentials than lithium or a higher potential than fluorine?

Please ignore the cost of the cell or practically.

  • 2
    $\begingroup$ See chemistry.stackexchange.com/questions/102502/… which is all but a duplicate of this. It gives an example of a theoretical cell with a potential of a bit over 2,000,000 Volts. $\endgroup$
    – Ian Bush
    Jul 20, 2021 at 7:24
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    $\begingroup$ Be aware that standard electrode potentials are thermodynamicaly equivalents of standard Gibbs energy of reaction a ox + b H2(g) <=> 2b H+(aq) + a red as Delta G_r = -nF E_std.. Some of them are just theoretical, with limited or hypothetical possibility to be directly measured, or to design a cell based on it. Note that above potentials are defined for water based solutions and hydrated Li+ and F-, what would definitely not be the case if such a cell were ever designed. $\endgroup$
    – Poutnik
    Jul 20, 2021 at 8:08


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