5results about "Zirconium sulfates" patented technology

The invention discloses a closed cycle utilization method of a zirconium-based arsenic removal agent. The method comprises the following steps: (1) taking zirconium sulfate as the arsenic removal agent used for the first time; the roasted material prepared in the step (4) is adopted as an arsenic removal agent for follow-up recycling; adding an arsenic removal agent into the arsenic-containing acid liquid and / or zirconium arsenate thin slurry, and carrying out solid-liquid separation to obtain arsenic-removed slag and arsenic-removed liquid; (2) mixing the arsenic-removed liquid with macroporous composite exchange resin, and carrying out zirconium removal reaction to obtain zirconium-loaded resin and purified liquid; (3) mixing the zirconium-loaded resin with the arsenic-containing acid solution, and separating resin particles from the slurry containing the zirconium arsenate precipitate by using a solid-liquid separation device to obtain regenerated resin and zirconium arsenate thin slurry; (4) mixing the arsenic-removed slag with a sulfuric acid solution and elemental sulfur, carrying out a reduction roasting reaction to obtain a roasted material, and condensing gas released by the reaction to obtain a mixture of sulfuric acid and arsenious acid; and (5) cooling the mixture of sulfuric acid and arsenious acid, and carrying out centrifugal separation to obtain arsenic trioxide solid and a sulfuric acid solution.

The invention belongs to the technical field of solid-state batteries, and provides a coated lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a lithium salt, a manganese salt, a cobalt salt and a nickel salt, carrying out a co-precipitation reaction, and sintering to obtain the lithium-rich manganese-based positive electrode material LRMO; the LRMO and the coating agent are mixed and subjected to ball milling, and the mass ratio of the LRMO to the coating agent is 100: (5-30). The invention also discloses the coated lithium-rich manganese-based positive electrode material prepared by the method and an all-solid-state battery, and the positive electrode of the battery comprises the coated lithium-rich manganese-based positive electrode material. The structural stability and interface compatibility of the LRMO are optimized by adjusting the content of the coating agent and the parameters of the ball milling process. The obtained coated positive electrode material can effectively stabilize Li-O-Li configuration, inhibit lattice oxygen release and transition metal dissolution, improve the interface matching with electrolyte, and significantly improve the cycle capacity retention ratio and voltage attenuation characteristic of the all-solid-state battery.

The present disclosure belongs to the technical field of solid-state batteries, and provides a coated lithium-rich manganese-based positive electrode material and a preparation method and application thereof. The preparation method comprises: mixing lithium salt, manganese salt, cobalt salt and nickel salt to perform a co-precipitation reaction, and sintering to obtain a lithium-rich manganese-based positive electrode material LRMO; mixing the LRMO with a coating agent and ball milling to obtain the same, and the mass ratio of the two is 100:5-30. The present disclosure also discloses a coated lithium-rich manganese-based positive electrode material prepared according to the above method, and a full solid-state battery, wherein the positive electrode of the battery comprises the above coated lithium-rich manganese-based positive electrode material. By adjusting the content of the coating agent and the ball milling process parameters, the structural stability and interface compatibility of the LRMO are optimized. The obtained coated positive electrode material can effectively stabilize the Li-O-Li configuration, inhibit the release of lattice oxygen and the dissolution of transition metals, and at the same time improve the interface matching with the electrolyte, thereby significantly improving the cycle capacity retention rate and voltage attenuation characteristics of the full solid-state battery.

The invention belongs to the technical field of solid electrochemistry and energy storage materials, and discloses a sulfite-based oxyhalide solid electrolyte material and a preparation method and application thereof. The sulfite-based oxyhalide solid electrolyte material is of an amorphous structure, and the chemical formula of the sulfite-based oxyhalide solid electrolyte material is (Na2SO3) xZrCl4, wherein x is more than or equal to 0.1 and less than or equal to 0.7. Compared with a traditional halide electrolyte, the sulfite-based oxygen halide solid electrolyte material has the advantages that the ionic conductivity is improved by one to two orders of magnitude, and an all-solid-state sodium ion battery assembled based on the material shows high efficiency, long cycle life, wide electrochemical stability window and excellent mechanical property; and the method has huge application potential in actual solid-state sodium ion battery devices.