Interface-coupling of CoFe-LDH on MXene as high-performance oxygen evolution catalyst

Ambient Growth of Hierarchical FeOOH/MXene as Enhanced Electrocatalyst for Oxygen Evolution Reaction

“…In the O 1s spectra (Figure c ), the deconvoluted five peaks are Ti−O (530 eV), C−Ti‐O x (531.8 eV), Fe‐O−Fe (529.8 eV), Fe‐O−H (531.2 eV), and ‐OH (532.2 eV), which are attributable to the Ti 3 C 2 and FeOOH as reported . In the high‐resolution Fe 2p spectra (Figure d ), two major peaks at 724.9 and 711 eV correspond to Fe 2p 1/2 and Fe 2p 3/2 orbits, respectively; the peak at 713.6 eV is assigned to Fe 3+ ; peaks at 719.3 and 733 eV are two shake‐up satellites . In the high‐resolution of Ti 2p spectra, the peaks of Ti−C (458.2 and 463.9 eV) shift obviously to higher binding energies region in comparison to the pure Ti 3 C 2 (455.19 and 461.2 eV).…”

“…FeOOH NSs/Ti 3 C 2 exhibits peaks of (100) and (110) planes located at 35 and 63° that belong to the δ‐FeOOH. Distinctly, the (002) characteristic peak of Ti 3 C 2 disappears and the other peaks become very weak, which is because FeOOH NSs suppress restacking of Ti 3 C 2 NSs . SEM and TEM were used to characterized the morphologies of samples.…”

“…As a representative one, Ti 3 C 2 is synthesized by selectively etching the Al layers from the bulk Ti 3 AlC 2 , where Al atoms are replaced by terminated functional groups including ‐O, ‐OH and ‐F . Thus, combination of highly reactive surface and excellent conductivity, Ti 3 C 2 offers the feasibility for constructing various hybrid materials that are proved to exhibit enhanced electrochemical performance in battery, supercapacitor and electrocatalysis field . The ultrathin few‐layer of Ti 3 C 2 can further provide flexibility, larger exposed active area and strong interfacial coupling interaction.…”

Investigation of adsorption, dissociation, and diffusion properties of hydrogen on the V (1 0 0) surface and in the bulk: A first-principles calculation

“…The production, purification, and storage of H 2 have always attracted considerable research attention. Separation and purification techniques of H 2 determine the application standards of H 2 fuel [2], [3], [4]. To meet the industrial demand for high-purity H 2 , H 2 purification is necessary.…”

Effects of Mo alloying on stability and diffusion of hydrogen in the Nb16H phase: a first-principles investigation

“…Hydrogen-permeable alloy membranes have been well regarded as the most important materials for hydrogen separation and purication. [1][2][3][4][5] Currently, group V metals (vanadium, niobium, and tantalum) have attracted many investigations as promising hydrogenseparation materials owing to their lower price and higher hydrogen permeability than those of currently used Pd-based alloys. 3,6 However, there is still a large barrier to practical application of these metals because of their poor resistance to hydrogen embrittlement.…”