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. 2021 Mar 3;27(19):5906–5912. doi: 10.1002/chem.202100387

Figure 1.

Figure 1

Local H2O and OH activities modulated by the competing HER and CO2RR are monitored using a precisely positioned Pt nanoelectrode. The PtO reduction peak potential changes with the different ion activities established inside the three‐phase boundary of the GDE at varying reaction rates.