The ECSA(electrochemical active surface area) for Pt/C electrocatalyst easily can be calculated in acidic media such as 0.1M HClO4 after purging with N2.
Then, how can we calculate the ECSA for Pt/C in 0.1M KOH?
This is because I have been known that the examination method by using the total charge amount caused by H+ desorption is only acceptable in acidic media.
I think your will have to do it in acid media, because you do not have the same process in basic conditions.
Electrochemical characteristics of nanostructured platinum electrodes – a cyclic voltammetry study
Phys.Chem.Chem.Phys., 2014, 16, 8392
Planar polycrystalline platinum CVs in electrolytes with different pH(including 0.1 M KOH) values.
With well known electrochemical methods (voltammetry and coulometry), using acid or base electrolytes, saturated inert gas (N2, Ar or others). Electric charge 220 micro coulombs at the field of potentials of hydrogen chemisorbtion corresponds to 1 cm2 of real surface.
Thanks for your kind comments. The paper related to this question has just been accepted and on-line published.
Hi,
We developed a free and simple-to-use graphical software that easily calculates the voltammetric charges and the determination of the real surface area of solid electrodes by the use of a proper conversion factor. A free article explaining all important features is also avaliable:
DOI at ResearchGate: 10.13140/RG.2.2.30813.61923.
Best regards,
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