Strain-mediated oxygen evolution reaction on magnetic two-dimensional monolayers

Abstract

By screening 56 magnetic 2D monolayers through first-principles calculations, 8 magnetic 2D monolayers (CoO2, FeO2, FeSe, FeTe, VS2, VSe2, VTe2 and CrSe2) can bind O*, OH* and OOH* intermediates of...

Substrate Strain Engineering of Single-Atomic Sn-N4 Sites Embedded in Various Carbon Matrixes for Bifunctional Oxygen Electrocatalysis

“…Another approach to strain engineering of carbon materials involves introducing an external lattice strain by applying external forces artificially or creating a lattice mismatch by constructing heterostructures with supporting materials. ,,, Although the lattice strain in the carbon substrate is thermodynamically unstable and hard to maintain when the external force is removed or the carbon substrate slips with the supporting material, this method allows for continuous and controllable tuning of catalytic activities. ,− Therefore, we further discussed the effect of external lattice strain on the catalytic performance of Sn-N 4 moieties. Since it is difficult to apply controllable external strain to GQDs from both theoretical and experimental perspectives, our investigation was focused on the effect of axial lattice strain on the ORR/OER performance of Sn-N 4 -(5,0) CNT and the effect of in-plane lattice strain on that of Sn-N 4 -Gra.…”

Magnetism in curved VSe2 monolayers

“…[9][10][11][12][13][14][15][16] On the other hand, the structural deformation on 2D materials not only changes the intrinsic mechanical and physical behaviors of 2D materials but also endows them with new phenomena and properties. 17,18 The appearance of strain gradient in low-dimensional materials caused by nonuniform mechanical strain or inhomogeneous deformation can have a comparably strong inuence on charge polarization and electronic behaviors, [19][20][21][22][23][24] spin-orbit interactions, 25,26 and topological magnetism, 26 which gives rise to notable exoelectric and exomagnetic effects. 24,[27][28][29][30][31] As the low exural stiffness of thin atomic layers, magnetic 2D materials can be easily bended or deformed under mechanical loading or substrate interaction.…”

Strong Room-Temperature Ferromagnetism in Ultrathin NiOOH Nanosheets through Surfactant Manipulation

“…Exploring room-temperature 2D FM materials with tunable spin ordering is still essential. In addition to the anisotropic dimensionality effect, strain , and impurities − can also tune the spin ordering, leading to FM. Although this enhancement is generally weak in antiferromagnetic (antiFM) bulk phases, it can become particularly strong in 2D materials due to the significantly enhanced anisotropic electronic and magnetic structures in their ultrathin geometry. , NiOOH, a layered material which can be readily tuned by doping , and strain engineering, , may be able to be fabricated into a tunable FM 2D material.…”