. 2021 Jul 6;121(17):10241–10270. doi: 10.1021/acs.chemrev.1c00148

Table 1. Exchange Current Densities of Several Cathodes Commonly Used in Cathodic Electroorganic Synthesis.

cathode material	Pb	Sn	Hg^a	Cd	Cu	Pt (smooth)
exchange current density for hydrogen evolution: log(j₀/ A m^–2)^b	–8.7	–4.0	–7.7	–3.0	–2.7	1.0

Banned in large quantities in most countries.

Measured in 1.0 M HCl at 20 °C; values from ref (31).