Table 1. Activities for the HER/HOR at room temperature.

Electrode	i0,apparent (mA cm−2)*	Source
Pt(111)	∼0.45	ref. 15
Pt(100)	∼0.6
Pt(110)	∼0.98
PdOL/PtRu(111)	∼2.0	refs 29,31
PdOL/Pt(111)	∼2.0
Pt(111)	∼1.5	This work
Cu-Pt(111) NSA (1 ML Cu initially deposited)	∼3.0	This work
Pt (nanoparticles)	∼1.0 (at 80 °C)	ref. 18

HER, hydrogen evolution reaction; HOR, hydrogen oxidation reaction.

^*At pH 1, without iR correction, as reported in the literature.