5 results about "Ternary sulfide" patented technology

The invention discloses a method for preparing a ternary sulfide catalyst by utilizing a waste battery and application of the ternary sulfide catalyst. The method comprises the following steps: S1, separating and collecting a positive electrode material; s2, preparing an electro-deposition leaching solution; s3, a layered NiCoMn (OH) x / NF precursor is prepared through primary electro-deposition; s4, a NiCoMnS < x > / NF catalyst is prepared through secondary electro-deposition; the catalyst is applied to an electro-catalysis hydrogen evolution reaction and a sulfur ion oxidation reaction. The method is simple in process, controllable in cost and free of toxic gas generation, and the catalyst is excellent in performance, so that the catalyst shows extremely high applicability and popularization value in industrial production.

The invention relates to a Fe-Mo-V ternary sulfide electrocatalytic ammonia synthesis catalyst, in particular to the technical field of electrochemical green hydrogen production of green ammonia. The catalyst is composed of iron, molybdenum, vanadium and sulfur elements, has a chemical general formula of FeaMo [beta] V [gamma] S, and has a porous nanosheet structure with a specific surface area. The preparation method comprises the following steps: dissolving an iron source, a molybdenum source and a vanadium source in water in proportion, adding a sulfur source, carrying out a hydrothermal reaction, carrying out centrifugal washing, and annealing in a hydrogen-containing inert atmosphere. According to the catalyst, an iron-molybdenum electronic structure is reconstructed through vanadium doping, Fe-V double active centers are formed to synergistically promote nitrogen adsorption and N = N bond breakage, and meanwhile, a proton transfer path is perfected through molybdenum and sulfur sites. The invention is applied to proton exchange membrane electrolytic cell cathodes. The porous nanosheet structure accelerates nitrogen mass transfer, V-S bonds strengthen lattice stability, and the problems of weak nitrogen activation, serious hydrogen evolution competition and sulfur loss of a traditional catalyst are solved. The process is suitable for large-scale production, the energy consumption of single electrolysis is reduced to 28.6 kWh / kgNH3, and a high-efficiency and low-cost catalysis scheme is provided for green ammonia industrialization.

The invention discloses a cobalt-doped nickel molybdenum sulfide electrode material, a preparation method of the cobalt-doped nickel molybdenum sulfide electrode material and application of the cobalt-doped nickel molybdenum sulfide electrode material in electro-catalytic synthesis of 3, 4-dihydroisoquinoline. A simple hydrothermal method is adopted to directly grow a cobalt-doped nickel molybdenum oxide precursor on a foamed nickel substrate in situ, and then the cobalt-doped nickel molybdenum oxide precursor is subjected to vulcanization treatment to prepare the Co-NiMo-S / NF self-supporting electrode material. The electrode can efficiently catalyze tetrahydroisoquinoline to be selectively oxidized into 3, 4-dihydroisoquinoline under the normal-temperature and alkaline conditions, the conversion rate is larger than or equal to 85%, the selectivity is close to 100%, and meanwhile generation of deep oxidation product isoquinoline is effectively inhibited; the ternary sulfide electrode is applied to the reaction system for the first time, the catalyst cost is low, the preparation process is simple, the reaction conditions are mild, and the method has good industrial application prospects.

Particular embodiments may provide interfacial materials for a solid-state electrolyte interface. In some embodiments, the solid-state electrolyte is argyrodite-based. In some embodiments, the interfacial material may comprise a binary halide, a ternary halide, a binary sulfide, a ternary sulfide, or a combination thereof. In some embodiments, the interfacial material may be disposed at the interface of the anode and the solid-state electrolyte and / or the interface of the cathode and the solid-state electrolyte.

The present application relates to the technical field of solid-state batteries, and discloses a surface-modified graphite negative electrode material, a preparation method therefor, and a use thereof. The surface-modified graphite negative electrode material comprises a graphite core, an inner coating layer, and an outer coating layer, the inner coating layer coats the surface of the graphite core, and the outer coating layer coats the surface of the inner coating layer; the inner coating layer is made of a LiX-doped binary sulfide electrolyte, and the outer coating layer is made of a ternary sulfide electrolyte; X is a halogen element; and the mass ratio of the graphite core to the inner coating layer to the outer coating layer is (85-99.5):(0.25-5):(0.25-10). In the present application, coating modification is performed on the graphite negative electrode material, so that the probability of side reactions between the graphite negative electrode material and an electrolyte material is reduced, thereby improving the ionic conductivity and the electronic conductivity of the negative electrode material, and improving the rate performance of the negative electrode material and a solid-state battery.