The present disclosure relates to a method that includes heating a mixture that includes a metal phenylphosphine-containing precursor that includes at least one of Mo(PPh.sub.3).sub.2(CO).sub.4, Pd(PPh.sub.3).sub.4, Ru(PPh.sub.3).sub.3Cl.sub.2, Ru(PPh.sub.3).sub.2(CO).sub.2Cl.sub.2, Co(PPh.sub.3)(CO).sub.2(NO), and/or Rh(PPh.sub.3).sub.2(CO)Cl, a surfactant, and a solvent. The heating is to a target temperature to form a heated mixture containing a metal phosphide nanoparticle that includes at least one of MoP, Ru.sub.2P, Co.sub.2P, Rh.sub.2P, and/or Pd.sub.3P, and the metal phosphide nanoparticle is not hollow.

Provided are a sulfide solid electrolyte, and a preparation method and use thereof. The sulfide solid electrolyte has a chemical composition formula of Li.sub.6P.sub.1-a(M).sub.aS.sub.5X (where M is one or more selected from the group consisting of V, Nb, and Ta, and X is one or more selected from the group consisting of F, Cl, and Br). The preparation method includes: weighing raw materials of a Li source, a P source, an S source, an M source, and an X source, and mixing to be uniform to obtain a mixture, and subjecting the mixture to ball milling to obtain a precursor powder of the sulfide solid electrolyte; sieving the precursor powder to obtain a sieved powder, and then pressing the sieved powder into a solid sheet; and subjecting the solid sheet to vacuum high-temperature sintering to obtain the sulfide solid electrolyte.

Ternary heterostructure comprising Ni.sub.2P, MoNiP.sub.2, and MoP, wherein the ternary heterostructure comprises crystalline regions and amorphous regions useful as an electrocatalyst for alkaline hydrogen evolution reaction; a cathode and an electrochemical cell including the same; and methods of preparation and use thereof.

The present invention is in the field of nanostructure synthesis. The present invention is directed to methods for producing nanostructures, particularly Group III-V semiconductor nanostructures. The present invention is also directed to preparing Group III inorganic compounds that can be used as precursors for nanostructure synthesis.

The present disclosure relates to a method that includes heating a mixture that includes a metal phenylphosphine-containing precursor that includes at least one of Mo(PPh.sub.3).sub.2(CO).sub.4, Pd(PPh.sub.3).sub.4, Ru(PPh.sub.3).sub.3Cl.sub.2, Ru(PPh.sub.3).sub.2(CO).sub.2Cl.sub.2, Co(PPh.sub.3)(CO).sub.2(NO), and/or Rh(PPh.sub.3).sub.2(CO)Cl, a surfactant, and a solvent. The heating is to a target temperature to form a heated mixture containing a metal phosphide nanoparticle that includes at least one of MoP, Ru.sub.2P, Co.sub.2P, Rh.sub.2P, and/or Pd.sub.3P, and the metal phosphide nanoparticle is not hollow.