Transition metal phosphides (TMPs) are expected to be excellent electrocatalysts for oxygen evolution reaction (OER) because of their high stability, highly conducting metalloid nature, highly abundant constituting elements, and the ability to act as a precatalyst due to in situ surface-formed oxy-hydroxide species. Herein, a "one-pot" colloidal approach has been used to develop a rod-shaped one-dimensional non-noble metal FeCoP electrocatalyst, which exhibits an excellent OER activity with an exceptionally high current density of 950 mA cm −2 , a turnover frequency value of 7.43 s −1 , and a low Tafel slope value of 54 mV dec −1 . The FeCoP electrocatalyst affords OER ultralow overpotentials of 230 and 260 mV at current densities of 50 and 100 mA cm −2 , respectively, in 1.0 M KOH, and demonstrates a superior catalytic stability of 10,000 cycles and durability up to 60 h at 50 mA cm −2 . An insight into the superior and stable electrocatalytic OER performance by the FeCoP nanorods is obtained by extensive Xray photoelectron spectroscopy, X-ray diffraction, Raman and infrared spectroscopy, and cyclic voltammetry analyses for a mechanistic study. This reveals that a high number of electrocatalytically active sites enhance the oxygen evolution and kinetics by offering metal ion sites for utilitarian in situ surface formation and adsorption of *O, *OH, and *OOH reactive species for OER catalysis.

The challenge to develop a highly efficient and affordable electrocatalyst for the oxygen evolution reaction (OER) could be fulfilled by a newly developed transition metal boron amorphous alloy electrocatalyst. This could successfully improve the overall efficiency of the electrochemical water splitting. Herein, we demonstrate the development of an entirely new Cu−Co−B amorphous alloy nanosheet (NS), which can act as an industrially promising electrocatalyst for the OER. Among a series of studied compositions, surface activated CuCo 2 B NSs with 5−6 nm thickness offer highly promising OER performances with an exceptionally high current density of 1000 mA cm −2 at 270 mV of overpotential (η) in a 1.0 M KOH electrolyte. It can also afford η 100 = 204 mV and η 500 = 256 mV, which remains intact for 60 h, with the lowest Tafel slope and charge transfer resistance and the highest electrochemically active sites with a promising turnover frequency and 87% Faradaic efficiency. It also fulfills the commercial requirement criteria of the OER process in 30 wt % KOH. Extensive experimental analyses led to a Cu−Co synergistic-based mechanism by the in situ formed active sites for the adsorption of *OH and *OOH reaction species, reconstruction of the catalyst surface by forming a metal hydroxides/oxyhydroxides precatalyst, modulation of electronic structure due to the rich defect nature, and topological disorder of the amorphous catalyst. Density functional theory (DFT) studies reveal that CuCo 2 B NSs are the most promising candidates for OER due to the lowest barrier for OER and thus the lowest adsorption energies, and the Cu-centers effectively and synergistically enhance the OER.

Herein, we developed trimetallic FeCoPd polyhedral alloy nanoparticles (NPs) as a new highly efficient and promising bifunctional electrocatalyst for hydrogen and oxygen evolution reaction (HER, OER). The as-synthesized polyhedral NPs...

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The superior performance of Graded-Channel MOSFET over classical MOSFET transistors is demonstrated to extend to down scaled channel lengths. While keeping a normal down scaling trend, Graded-Channel devices continue to show favoured static and analog performances in comparison to classical devices. Graded-Channel devices are also characterized in high temperature and high frequency regimes of operation.