Construction of hydroxide pn junction for water splitting electrocatalysis

Activating lattice oxygen in NiFe-based (oxy)hydroxide for water electrolysis

“…b Chronopotentiometry curves at the current density of 100 mA/cm 2 of the electrolytic cell with MoS 2 /NiFe LDH | MoNiFe coupled electrodes and the reference cell with Pt/C | RuO 2 coupled electrodes. c The comparison of overall water splitting performance at the current density of 100 mA/cm 2 for MoS 2 /NiFe LDH | MoNiFe and other noble-metal-free electrocatalysts in recently reported literature, such as MnCo-CH@NiFe-OH (1.69 V) 61 , NiFe-LDH/Ni(OH) 2 (1.81 V) 62 , NiCoFe-O@NF (1.7 V) 63 , NiP 2 /NiSe 2 (1.8 V) 64 , Ni2P-Fe2P/NF (1.68 V) 65 , NiFeP-CNT@NiCo/CP (1.92 V) 66 , FeCo/Co 2 P@NPCF (1.98 V) 67 , Co-NC/CP (1.86 V) 68 and CoP NFs (1.92 V) 69 . …”

Oxygen-vacancy-containing Nb2O5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction

“…4b), implying a faster charge transport rate and hence improved electrocatalytic activity. [35][36][37] Additionally, the electrochemically active surface area of Nb 2 O 5Àx and Nb 2 O 5 was measured to further study the inuence of the OVs by calculating the electrochemical double-layer capacitance (C dl ). [37][38][39] The C dl of Nb 2 O 5Àx (3.1 mF cm À2 ) was larger than that of Nb 2 O 5 (2.4 mF cm À2 ), which proves that the introduction of OVs could provide more catalytically active sites for the ENRA reaction (Fig.…”

Atomic Heterointerface Engineering of Ni2P‐NiSe2 Nanosheets Coupled ZnP‐Based Arrays for High‐Efficiency Solar‐Assisted Water Splitting

“…Specific surface area and porosity of the ZnP@Ni 2 P‐NiSe 2 were evaluated by nitrogen adsorption–desorption isotherms. As seen in Figure 2e, the ZnP@Ni 2 P‐NiSe 2 possesses a high specific surface area of 14.7 m 2 g –1 , ≈6.7 times higher than that of the pure ZnP NRs as well as many recently reported catalysts, such as Ni 0.7 Fe 0.3 S 2 , [ 35 ] Co‐Mo‐P@NCNS‐600, [ 36 ] MnCo‐CH@NiFe‐OH, [ 37 ] and β‐Ni(OH) 2 /NF. [ 38 ] In addition, the pore size distribution is observed at a range from 1 to 20 nm along with a high pore volume recorded at a narrow range of 1–3 nm, confirming the mesoporous nature of the catalyst (Inset in Figure 2e).…”