5 results about "Stannous sulfate" patented technology

This invention discloses a positive electrode paste for lead-acid batteries with high cycle stability and its preparation method, belonging to the field of electrochemical energy storage technology. Rice husk ash is acid-treated to obtain a wet filter cake. The wet filter cake is refluxed with silane coupling agent KH-550 to obtain functionalized rice husk ash. The functionalized rice husk ash, pyrrole, and ammonium persulfate are mixed and stirred to obtain a composite conductive agent. Aniline, o-aminobenzoic acid, and ammonium persulfate are mixed and stirred to obtain a conductive copolymer. The conductive copolymer is mixed with N-methylpyrrolidone to obtain a dispersion, and glycerol is added and stirred to obtain a modified precursor solution. Lead powder, mixed conductive agent, polypropylene short fibers, stannous sulfate, sulfuric acid solution, deionized water, and the precursor solution are mixed to obtain the positive electrode paste. This method improves the structural stability and electronic conductivity of the positive electrode active material, effectively inhibits the shedding of active material and interface peeling during cycling, and extends the cycle life of the battery under high-rate partial charge conditions.

The application discloses a kind of chemical plating black nickel concentrated solution, including concentrated solution A, concentrated solution B and concentrated solution C, concentrated solution A includes nickel sulfate, stannous sulfate, zinc sulfate, sodium hypophosphite, sodium citrate, sodium acetate, sodium lactate, sulfur-containing amino acid, stabilizer, ammonia and deionized water, concentrated solution B includes sodium hypophosphite, zinc sulfate, sodium acetate, sodium lactate, stabilizer and deionized water, concentrated solution C includes nickel sulfate, stannous sulfate, sodium citrate, sulfur-containing amino acid, ammonia and deionized water.The application also discloses its preparation method, plating method and application.The black nickel layer prepared from the chemical plating black nickel concentrated solution of the application not only has excellent blackening effect and luster, but also has excellent wear resistance, corrosion resistance and bonding force when directly contacting with metal substrate.The chemical plating bath has long service life and self-regulating control of pH value by continuous supplementing, and the plating speed is stable during the whole plating process.

The application discloses a preparation method of mesoporous silver oxide-tin dioxide nanosphere gas-sensitive material and application thereof, and comprises the following steps: taking tannic acid as a complexing agent and a reducing agent, taking stannous sulfate and silver nitrate as metal precursors, and preparing the mesoporous silver oxide-tin dioxide nanosphere gas-sensitive material through one-step hydrothermal method. The mesoporous silver oxide-tin dioxide nanosphere gas-sensitive material prepared through the method can detect formaldehyde gas under low-temperature conditions.