We know that it is difficult to get the methanol by electrochemical reduction method. But how to get the standard redox potential of CO2 + 6H+ + 6e- —— CH3OH + H2O, -0.38 V vs NHE at pH7 (or 0.03 V vs NHE at pH0) with so low potential value of -0.38 V?
P. Christiaan Pistorius
See Willem Koppenol's helpful answer at
https://www.researchgate.net/post/What_is_the_oxidation_potential_for_methanol_formaldehyde_and_formic_acid
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Juan Casado
You can start by combining different reactions which Gibbs free energy is well known, such as methanol oxidation and water formation. Once you get the free energy of your reaction, the standard potential is straightforward.
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