47 results about "Zirconium doping" patented technology

The invention discloses a lithium-ion battery positive electrode sheet using a cobalt-free high-nickel positive electrode material, comprising a positive electrode current collector and a positive electrode active material layer loaded on the positive electrode current collector, and the composition of the positive electrode active material layer includes a cobalt-free high-nickel positive electrode material , conductive agent and binder, the molecular formula of cobalt-free high-nickel positive electrode material is Li(Ni 1‑ x mn x )Zr y o 2 , where 0.1≤x≤0.5, 0.002≤y≤0.003. When the cobalt-free high-nickel positive electrode material is prepared, it is first prepared by coprecipitation (Ni 1‑x mn x )Zr y (OH) 2 precursor; then combine the precursor with LiOH·H 2 O mixed calcined. The present invention uses zirconium-doped cobalt-free high-nickel layered positive electrode material, which can effectively improve the cycle performance and rate performance of the positive electrode sheet; the precursor prepared by coprecipitation method has complete morphology and uniform size, and the tested Zr content and doped The impurities are basically the same, and the structural stability and high temperature stability are good.

The invention discloses a cerium-zirconium-doped polishing liquid and its preparation method and application. The preparation method uses rare earth carbonate and basic zirconium carbonate as precursors, and through pre-high-energy ball milling, the particle size of raw materials is greatly reduced while passing The energy input reduces the grain boundary energy in the raw material, and the spray drying ensures the uniformity of dispersion between the powder particles while removing the water. After that, combined with a specific secondary calcination method, it can prevent the original crystal from growing too much during the calcination process. Make the crystal grains grow more completely during the calcination process, the crystal lattice is more perfect, the edges and corners are more distinct, and it is easier to obtain materials with small grain size and uniform particle size distribution, thus ensuring that the polishing liquid prepared by the above method is used for polishing blue glass It has high cutting capacity and high surface quality at the same time; in addition, the further ball milling and formula preparation of polishing fluid are completed at the same time during the ball milling process, which not only speeds up the ball milling efficiency, shortens the production cycle, but also is more environmentally friendly.