The alkaline media confers reduced adsorption energies of anions. According to the
Nernst equation, the working potential of electrochemical processes in aqueous media shifts by ‒59 mV, equivalent to a weakening of adsorption energy of 0.059 eV for a monovalent anion, for every increase of 1 pH unit per increase (Xiaoming et al., 2015)
Please, clarify your question.
Who is "we?" Who is using alkaline media to reduce O2?
Concerning comments.
"Oxygen reduction reaction kinetic is faster in alkaline medium compared to acidic medium. " Plz reference
"we need the more number (4e-) of electron transfer, that is more in alkaline medium." I do not understand what you mean.
"The alkaline media confers reduced adsorption energies of anions. " You seem to misinterpret the Nernst law. Plz, give a full reference
which controls any electrochemical reaction is overpotential. The smaller overpotential is preferable. Therefore, overpotential of oxygen reduction in basic medium may be small.
"Therefore, overpotential of oxygen reduction in basic medium may be small." Or may be higher? Who knows?
Plz, give the values of dioxygen reduction potential in acidic and basic media.
i did CV experiment to study ORR .I supply air as source of oxygen and nitrogen on separate run as inert.TWO CV curves attached image below , are different but i didn't observe any peak .Anyone who help me to conclude this data .
Yurii , working electrode was MnFe2O4 .ph was around 13(basic)
What is the maximium reported potential (vs Ag/AgCl) at which oxygen reduction reaction takes place on pt/c(20 %) electrode in alkali medium ?
Just measure it under your conditions. Ag/AgCl ref electrode is not recommended to use at high pH.
I asked several questions to the commenters, Bapi, Antonio, and Mosaad. None of you replied. Why you did not defend your answers? In my opinion your answers were incorrect.
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