Figure 4: Electrocatalytic properties of NiFe-MOF and other samples for HER and overall water splitting.
From: Ultrathin metal-organic framework array for efficient electrocatalytic water splitting
(a) LSV plots obtained with NiFe-MOF, bulk NiFe-MOF, Ni-MOF and calcined NiFe-MOF for HER at 10 mV−1 in 0.1 M KOH. (b) LSV of NiFe-MOF for HER before and after chronoamperometric testing for 2000, s at −0.2 V (versus RHE) in 0.1 M KOH; the inset of (b) shows corresponding chronoamperometric profile. (c) LSV plots of a full electrolytic cell using two NiFe-MOF electrodes obtained at 10 mV s−1 in 0.1 M KOH; the inset photograph shows the evolution of hydrogen and oxygen gas bubbles at the NiFe-MOF electrodes at an applied cell voltage of 1.6 V; the LSV obtained using a Pt/C cathode and a IrO2 anode was included for comparison. (d) LSV plots of the two-electrode electrolytic cell obtained before and after 20 h chronoamperometric tests at a cell voltage of 1.5 V; the inset shows corresponding chronoamperometric plot.
