Figure 4: High-performance NiO/Ni-CNT cathode for water splitting with a single battery.
From: Nanoscale nickel oxide/nickel heterostructures for active hydrogen evolution electrocatalysis
(a) Linear sweep voltametry of NiO/Ni-CNT, Pt/C deposited on Ni foam and pure Ni foam at a scan rate of 1 mV s−1 under the loading of 8 mg cm−2 in 1 M KOH. For uncompensated curve, please refer to Supplementary Fig. 10. (b) Linear sweepment voltametry of water electrolysis using NiO/Ni-CNT as HER catalyst and NiFe LDH as OER catalyst (both loaded into Ni foam at a loading of 8 mg cm−2 based on the active mass) in 1 M KOH under different temperature. (c) Chonopotentiometry of water electrolysis using NiO/Ni-CNT and NiFe LDH at a constant current density of 20 mA cm−2 in 1 M KOH. (d) Demonstration of water-splitting device powered by an AAA battery with a nominal voltage of 1.5 V.
