Piezoelectricity of strain-induced overall water splitting of Ni(OH)₂/MoS₂ heterostructure

Abstract

In our study, the heterostructured Ni(OH)2/MoS2 nanoflowers (NFs) drastically exhibit overall water splitting into hydrogen (H2) and oxygen (O2) gas. The Ni(OH)2/MoS2 NF interface offers a strain-induced piezoelectric potential (piezopotential)...

Amorphous Nickel Hydroxide Shell on Ni8P3 Nanorods for Boosted Highly Stable Overall Water Splitting at High Current

“…The electrochemical durability also plays an important role for practical application. 30,31 As shown in Figure S6b, the LSV curve of this Ni 8 P 3 @Ni(OH) 2 electrode almost overlaps with the initial electrode after 1000 cycles, indicating the excellent stability of the as-prepared electrode. Additionally, the long-term stability of the Ni 8 P 3 @ Ni(OH) 2 core−shell electrode under a fixed overpotential was also detected, as shown in Figure S7a, and the electrode shows almost no attenuation under the 200 h test, indicating the excellent stability of the Ni 8 P 3 @Ni(OH) 2 electrode under high current density.…”

“…The Ni 8 P 3 @Ni­(OH) 2 core–shell electrode shows a larger TOF value of 1.88 s –1 than that of naked Ni 8 P 3 (1.03 s –1 ) and Ni­(OH) 2 (0.408 s –1 ) electrodes at an overpotential of 400 mV (Figure f), which also indicated the excellent catalytic activity of the Ni 8 P 3 @Ni­(OH) 2 core–shell electrode. , In addition, polarization curves normalized by the ECSA, as shown in Figure S6a, also illustrate the excellent intrinsic catalytic activity of Ni 8 P 3 @Ni­(OH) 2 . The electrochemical durability also plays an important role for practical application. , As shown in Figure S6b, the LSV curve of this Ni 8 P 3 @Ni­(OH) 2 electrode almost overlaps with the initial electrode after 1000 cycles, indicating the excellent stability of the as-prepared electrode. Additionally, the long-term stability of the Ni 8 P 3 @Ni­(OH) 2 core–shell electrode under a fixed overpotential was also detected, as shown in Figure S7a, and the electrode shows almost no attenuation under the 200 h test, indicating the excellent stability of the Ni 8 P 3 @Ni­(OH) 2 electrode under high current density.…”

An ultraefficient surface functionalized Ti3C2Tx MXene piezocatalyst: synchronous hydrogen evolution and wastewater treatment

“…Two-dimensional (2D) molybdenum disulfide (MoS 2 ) has been found to be useful in energy, environment, and sustainability applications. 13–17 MoS 2 is also effective at catalyzing redox reactions through mechanically induced electric fields, 18–20 thanks to the abundant active sites with high piezoelectricity present in a few odd-numbered layers. Researchers have developed new material systems with noncentrosymmetric structures using various piezoelectric and ferroelectric materials, including ZnSnO 3 , 21 BaTiO 3 , 22,23 BiFeO 3 , 24 MoSe 2 , 25 WS 2 , 26 and ferroelectric high entropy oxides.…”

MnOxHy-modified CoMoP/NF nanosheet arrays as hydrogen evolution reaction and oxygen evolution reaction bifunctional catalysts under alkaline conditions

“…Due to their adjustable 3d orbitals, 16 transition metals and their derivatives, 17 such as transition metal oxides, 18 transition metal phosphates, 19,20 transition metal hydroxides, 21 transition metal nitrides, 22 transition metal selenides, 23 and transition metal sulphides, 24,25 have been increasingly used as catalysts for water electrolysis. Among these, transition metal phosphides have emerged as popular choices due to their excellent catalytic efficacy and cost-effectiveness.…”