63 results about "Nickel sulphide" patented technology

The invention discloses a method for preparing a hollow ball of sulfide and oxide of nickel. The method comprises the following steps: (1), adopting ultrasonic or mechanical stirring to disperse nickel nitrate, L-cysteine and urea uniformly in deionized water; (2), transferring the mixed liquid into a reaction kettle, and reacting for 8 to 48 hours at a temperature of 140 DEG C to obtain a nickel disulphide hollow ball; (3), calcinating nickel disulphide at different temperatures to obtain hollow balls of nickel monosulfide and nickel oxide respectively; and (4), under hydrothermal condition, reacting nickel disulphide with selenium source and tellurium source respectively for 4 to 48 hours at a temperature of 140 DEG C to obtain hollow balls of nickel diselenide and nickel telluride. According to the method, raw materials are cheap, easy to obtain, and convenient to compound; the required devices are simple; no pollution is caused in the production process; and the large scale production can be realized rapidly.

The invention relates to an electrode for an alkaline water electrolysis full battery and a preparation method thereof. The full battery includes a water electrolysis cell body, and the water electrolysis cell body is separated into a cathode cavity and an anode cavity which are not connected to each other by a diaphragm. The cavity and the anode cavity are respectively equipped with a cathode and an anode, and the diaphragm is a sulfonated polyether ketone ion exchange membrane; the anode is a hydrated cobalt-nickel sulfide nanosheet or a hydrated cobalt-nickel sulfide strip formed in situ on the surface of the nickel-based substrate bring. The electrode with this structure has the characteristics of high surface roughness and large electrochemical reaction area. The existence of two-dimensional nanosheets can not only promote electron transfer and material transport, but also provide more reactive sites for water electrolysis reactions. Thereby reducing the onset potential of OER and increasing the speed of water electrolysis reaction. Since the substrate Ni is relatively stable in an alkaline environment, the incorporation of Co elements makes the structure of nickel sulfide more stable, thereby maintaining its structure and catalytic performance during continuous water electrolysis.