11 results about "Nickel boride" patented technology

The invention relates to composition and preparation of a thick-film copper conductor sintered at different temperatures and different atmospheres, and belongs to the field of chemical preparation. Comprising the following steps: mixing 65-85% of copper powder, 3.0%-15.0% of glass, 15.0%-35.0% of an organic adhesive and 0.1-1.5% of an additive which is one or more of titanium trioxide or stannous oxide, cuprous oxide and copper oxide, rolling into slurry, and sintering at 850-950 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The medium-temperature copper paste is prepared by the following steps: mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic adhesive and 0.2-1.6% of an additive which is one or more of titanium sesquioxide or stannous oxide, cuprous oxide and copper oxide, rolling into paste, and sintering at 450-650 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The low-temperature copper paste is prepared by mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic binder and 0.1-2.0% of an additive which can be one or more of elemental elements of magnesium, zinc, boron and phosphorus or one or more of nickel phosphide, nickel boride, copper phosphide and copper oxide, rolling the mixture into paste, and sintering the paste in air at 250-350 DEG C to obtain a copper conductor.

The invention discloses a preparation method of a nickel-iron alloy composite electrode suitable for electrocatalytic cracking of alkaline seawater and a product. The preparation method comprises the steps of surface treatment of a nickel-iron alloy sheet and preparation of a boronized nickel-iron alloy sheet composite electrode. According to the method, the marketed NiFe alloy sheet is directly subjected to thermal boronizing treatment and is directly subjected to electrochemical oxidation to prepare the multi-chromatography oxygen electrode, and various requirements of an anode material for seawater decomposition can be met. The prepared multi-layer oxygen electrode is mainly composed of a surface oxide layer, an alloy middle layer and an alloy substrate layer. The NiFeB alloy layer on the surface plays a role of a catalytic active layer, the NiFeB alloy layer in the middle plays a role of a corrosion-resistant layer, the NiFe alloy layer on the substrate plays a role of supporting, and the electrode material is efficiently supported by multiple layers together, so that the electrode material has a rapid electron transfer process, and the electrode material can show relatively high catalytic activity. The electrode material is cheap in raw material source and simple in preparation process, and has a relatively strong commercial application prospect.

The invention relates to the technical field of battery materials, in particular to a nickel boride and carbon double-layer coated sodium super-ion conductor positive electrode material as well as a preparation method and application thereof. The sodium super-ion conductor material comprises a manganese-based NASICON structure inner core and a nickel boride / carbon double-layer coating layer, wherein the manganese-based NASICON structure inner core is coated with the nickel boride / carbon double-layer coating layer; and the chemical formula of the manganese-based NASICON structure inner core is Na3MnTi (PO4) 3. The nickel boride accounts for 1%-10% of the sodium super-ion conductor material in percentage by mass. The sodium-ion battery positive electrode material is obtained by coating the manganese-based NASICON structure inner core with the nickel boride and carbon double coating layers, the ginger-Taylor effect can be effectively inhibited, the conductivity of the material is improved, and the prepared battery is excellent in cycling stability and capacity and has important application value in the field of sodium-ion battery material processing.

The present invention belongs to the technical field of photocatalytic hydrogen production, and specifically relates to a g-C3N4 / Ag@NiB with high hydrogen production activity. x Photocatalytic material and preparation method thereof. The method anchors silver (Ag) and in-situ self-catalytically deposits nickel boride (NiB) on its surface. x ), Ag@NiB with small size and uniform dispersion was obtained x Core-shell co-catalyst significantly improves the photocatalytic hydrogen production activity.

The present invention relates to the field of battery material technology, and in particular to a sodium superionic conductor positive electrode material coated with a double layer of nickel boride and carbon, as well as its preparation method and application. The sodium superionic conductor material comprises a manganese-based NASICON structure core and a nickel boride / carbon double-layer coating coated on the outside of the manganese-based NASICON structure core; the chemical formula of the manganese-based NASICON structure core is Na3MnTi(PO4)3. In terms of mass percentage, the nickel boride accounts for 1% to 10% of the sodium superionic conductor material. The present invention obtains a sodium ion battery positive electrode material by coating the manganese-based NASICON structure core with a double layer of nickel boride and carbon. The positive electrode material can effectively suppress the Jan-Taylor effect and improve the conductive properties of the material. The prepared battery has excellent cycle stability and relatively good capacity, and has important application value in the field of sodium ion battery material processing.

The invention relates to a method for preparing NiB alloy through eddy current thermoelectric coupling, and belongs to the field of nickel alloy preparation. The method mainly comprises the following steps that metal pure nickel is put into an induction furnace to be rapidly molten to obtain nickel melt, eddy current is formed in the nickel melt through the synergistic effect of electromagnetism and mechanical stirring, B2O3 (boric acid) and magnesium powder are mixed and introduced into the nickel melt, an in-situ reaction is carried out to generate elementary substances B and MgO, and under the effect of the eddy current, the elementary substances B are evenly dispersed in the nickel melt. In addition, excessive B2O3 and MgO generated through reaction are added for slagging to generate 3MgO. B2O3, the melting point of MgO-based slag is reduced, and the slag-metal separation effect is improved. Effective separation of slag and metal is promoted through the thermoelectric coupling effect. And after the reaction is finished, treating the smelting slag by adopting sulfuric acid, decomposing the boron-magnesium ore, separating out a boric acid product from the boron-magnesium ore, dehydrating and then recycling, thereby realizing clean preparation of the nickel-boron alloy.

The present application relates to a kind of anode catalysts for alkaline system direct urea fuel cell, it is with nickel salt, H3BO3 and PVP dispersed in water heating reaction preparation precursor, then under inert atmosphere calcination obtained, by nitrogen-containing carbon material wrapped elemental nickel / nickel oxide / nickel boride nanocrystalline composite material.The present application introduces non-metallic boron and PVP carbon material, after calcination, active substance nickel / nickel oxide / nickel boride replaces traditional noble metal, by forming metal boride and oxide to adjust catalyst electronic structure, improve the catalytic activity and electrode conductivity of catalyst, with it as the anode catalyst for alkaline system direct urea fuel cell, with excellent electrochemical reaction activity.

A downhole pump barrel is nickel plated to a predefined thickness followed by Boronizing a portion of nickel matrix to create Nickel Boride layer and leaving a layer of nickel between the newly formed Nickel Boride and the barrel metal surface. The top layer of Nickel Boride provides a hard surface like chrome plating which increases the wear / abrasion resistance during the sucker rod pump production. The nickel matrix disposed beneath the Nickel Boride acts as a barrier from any corrosion attacks reaching the barrel metal surface.

A downhole pump barrel is nickel plated to a predefined thickness followed by Boronizing a portion of nickel matrix to create Nickel Boride layer and leaving a layer of nickel between the newly formed Nickel Boride and the barrel metal surface. The top layer of Nickel Boride provides a hard surface like chrome plating which increases the wear / abrasion resistance during the sucker rod pump production. The nickel matrix disposed beneath the Nickel Boride acts as a barrier from any corrosion attacks reaching the barrel metal surface.

A downhole pump barrel is nickel plated to a predefined thickness followed by Boronizing a portion of nickel matrix to create Nickel Boride layer and leaving a layer of nickel between the newly formed Nickel Boride and the barrel metal surface. The top layer of Nickel Boride provides a hard surface like chrome plating which increases the wear / abrasion resistance during the sucker rod pump production. The nickel matrix disposed beneath the Nickel Boride acts as a barrier from any corrosion attacks reaching the barrel metal surface.