36 results about "Nickel(II) oxide" patented technology

The present invention provides an anode of excellent charge efficiency that can inhibit the generation of O2 even at the high temperature of the charging process and an alkaline battery that adopts the anode and has excellent battery capacity. The alkaline battery adopts the anode that contains nickel oxide as the main material and so on, and is characterized in that:(1) the nickel oxide is coated by cobalt oxide; (2) the nickel oxide is in solid solution state and at least contains elements that are chosen from Co, Zn, Mg, Mn, Ag and Al; (3) the cobalt oxide has elements of solid solution that are chosen from the elements which are symbolized by Ti, Y, Zn, Cd, Pb, Cr, Ag and Ln (wherein, Ln is one or mixture of lanthanide elements). The alkaline battery for power use, which can reach a high temperature when used and has significant high-speed discharging characteristics, in particular can inhibit the reduction of discharge capacity.

The invention discloses a hydrodesulfurization catalyst for removing sulfur compounds in medium / low-temperature coal tar and an application thereof, belongs to the technical field of hydrodesulfurization catalysts for coal tar, and aims to provide a catalyst which can deeply remove the sulfur compounds in the coal tar and has relatively high denitrification capacity, relatively high mechanical strength, relatively high water resistance, a certain specific surface area, proper pore volume and proper pore diameter. The technical scheme is as follows: the catalyst consists of an active ingredient, a carrier and an aid, wherein the carrier accounts for 60 to 75 percent of the total weight of the catalyst; the active ingredient accounts for 18 to 26 percent of the total weight of the catalyst; the aid accounts for 7 to 14 percent of the total weight of the catalyst; the active ingredient consists of metal tungsten, nickel and molybdenum; and based on metal oxides for calculation, tungsten trioxide accounts for 12 to 16 percent of the total weight of the catalyst; nickel oxide accounts for 5 to 7 percent of the total weight of the catalyst; and molybdenum trioxide accounts for 2 to 5 percent of the total weight of the catalyst.

The invention discloses a modified nickel oxide negative material. Nickel oxide with a hollow structure is taken as a matrix and is doped with metal elements (including one or more of lithium, sodium and potassium). A preparation method of the modified nickel oxide negative material comprises the following steps: dissolving metal element nitrate and nickel nitrate in water for mixing uniformly to obtain a mixed liquor, and then performing spray pyrolysis treatment on the obtained mixed liquor, thereby obtaining the modified nickel oxide negative material, wherein a metal element is one or more of lithium, sodium and potassium, and the molar concentration ratio of metal ions and nickel ions in the mixed liquor is equal to (1:100)-(10:100). The nickel oxide negative material has a hollow spherical feature, so that diffusion paths of lithium ions are reduced, and the volume change in a circulating process is alleviated to a certain degree. As nickel oxide is doped with the metal elements including lithium, sodium and potassium, the conductivity of the material is improved, the charge transfer impedance is lowered, and the electrochemical performance of a battery is improved.

The present disclosure relates generally to ceramic materials suitable for use as catalyst support materials, catalysts using such materials and methods for using them, such as methods for converting sugars, sugar alcohols, glycerol, and bio-renewable organic acids to commercially-valuable chemicals and intermediates. One aspect of the invention is a ceramic material including zirconium oxide and one or more metal oxides selected from nickel oxide, copper oxide, cobalt oxide, iron oxide and zinc oxide, the ceramic material being at least about 50 wt. % zirconium oxide. In certain embodiments, the ceramic material is substantially free of any binder, extrusion aid or additional stabilizing agent.

The invention relates to an in-situ-growth-based method for preparing nickel hydroxide-nickel oxide film electrode. The method comprises: cleaning, dedusting, rust removing, and oil removing are carried out on a metallic nickel substrate to obtain a clean nickel surface; preparation of an alkaline electrolyte is carried out, wherein the main raw material is KOH or NaOH alkali metal and the concentration is 5-300g / L and the auxiliary raw material is one of hydrogen peroxide, ammoniacal liquor, sodium carbonate, sodium oxalate, urea, and glycol and the concentration is 1-20g / L; the electrolyte is placed in an reaction still and the clean nickel substrate is immersed into the electrolyte; the reaction still is placed in a muffle furnace to carry out hydrothermal reaction for 1 to 96 houses at the temperature of 120 to 250 DEG C, so that oxidation reaction is carried out on the metallic nickel surface; and then the metallic nickel is taken out after water heating and is cleaned and dried, thereby obtaining the nickel hydroxide-nickel oxide film electrode prepared based on in-situ growth. The preparation method has advantages of simple process, low price of raw materials, easy operation, and low production price; the thickness of the prepared film material can be controlled; and the activity is high. The method is suitable for industrial large-scale production.

The invention discloses a compound perovskite oxide and a preparation method thereof. A general formula of the compound perovskite oxide is CaCu3Me4O12, wherein Me is one of Ni, Sb and Bi. The preparation method comprises the steps of taking calcium oxide, cupric oxide, nickel oxide, antimony pentoxide and bismuth trioxide as raw materials, mixing and ballmilling for 4-24h at the ballmilling rate of 200-450rpm, conducting pressure molding on ballmilled powder under 200-400MPa unidirectional pressure, sintering under high pressure, boosting 3-5GPa high pressure, heating to 1000-1200 DEG C with a heating rate of 30-50 DEG C / min, sintering for 30-120min, cooling to the room temperature at a rate of 20-50 DEG C / min, and removing the high pressure. Under the extra high pressure, the metastable compound perovskite oxide CaCu3Me4O12 can be kept stable; related compounds remain extra high pressure states in a whole high-temperature synthetic process; and a second phase due to lattice strain and the like is inhibited, so that the pure compound perovskite oxide can be obtained.