请问电化学活性比表面积(electrochemical active surface area))怎么测量的呢?
文献上有两种ECSA测量,一种是通过TEM,算出ds,进而算出ECSA(TEM)
另一种是ECSA(H-UPD)The charges associated to the H-UPD process in acidic electrolytes (averaged over the adsorption and the desorption process, see the voltammograms reported in Figure3) were turned into electrochemical active surface areas, ECSAH-UPD, by using the reference charge densities (210 μC cm-2 for Pt, 205 μC cm -2 for Pd and 198 μC cm-2 for Ir).
后一种是怎么算的呢?求高手赐教!