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Packaging equipment for seed packaging
ActiveCN224061237UImprove packaging qualityavoid cloggingSolid materialPackaging machinesAgricultural scienceAgricultural engineering
Owner:ZHEJIANG MITSUO SEED CO LTD
High-nickel ternary positive electrode material and preparation method and application thereof
PendingCN121948566AUniform transmissionImprove deintercalation rateCell electrodesSecondary cellsElectrical batteryNiobium
The invention relates to the technical field of lithium ion batteries, and discloses a high-nickel ternary positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing and sintering a nickel-cobalt-manganese precursor, a lithium source, niobium salt and fused salt. According to the preparation method of the high-nickel ternary positive electrode material provided by the invention, the niobium salt and the molten salt form a liquid phase environment at a relatively low temperature, and the niobium element can efficiently enter a crystal lattice, so that uniform bulk phase doping in a real sense is realized, and the electrochemical stability and the thermal stability are improved; meanwhile, the niobium doping can ensure the rapid and uniform transmission of the lithium source, so that the lithiation is more sufficient, and the lithium-nickel mixed arrangement caused by lithium deficiency is reduced in dynamics.
Owner:GEM WUXI ENERGY MATERIAL CO LTD +1
Nickel-rich positive electrode material, preparation method and application thereof
ActiveCN117208972BHigh crystallinityThe layered structure is intactCell electrodesSecondary cellsNickel saltElectrical battery
The application relates to the technical field of lithium ion battery positive electrode materials, in particular to a nickel-rich positive electrode material and a preparation method and application thereof. The preparation method is as follows: in a vacuum and high-temperature environment, a mixed solvent composed of acid, an organic solvent and an aqueous solution has a low boiling point, can be quickly self-evaporated, metal cation M1, metal cation M2, lithium ions, nickel ions and anions in the mixed solution are quickly precipitated, an atomically mixed uniform metal salt, nickel salt and lithium salt mixture is obtained, then high-performance nickel-rich positive electrode material with high crystallinity, small lithium-nickel mixing degree and accurate stoichiometric ratio is obtained through solid-phase sintering; the preparation method is simple, atomically mixed material can be realized, no element is lost in the whole synthesis process, the atomic utilization rate is high, the stoichiometric ratio is accurately controlled, and the method is suitable for wide application.
Owner:SHENZHEN DYNANONIC CO LTD +1
A synergistically modified high-voltage positive electrode material and a preparation method and application thereof
The application relates to the technical field of battery positive electrode materials, in particular to a synergistically modified high-voltage positive electrode material and a preparation method and application thereof, which comprises a bulk particle, a doped layer coated on the surface of the bulk particle and a coating layer coated on the surface of the doped layer; the bulk particle comprises lithium nickel cobalt manganese oxide; the doped layer is lithium nickel cobalt manganese oxide doped with fluorine elements in a bulk phase; and the coating layer comprises a lithium fluoride coating layer and lithium nickel cobalt manganese titanium oxide particles embedded in the lithium fluoride coating layer. The preparation method comprises the following steps: firstly, a nickel cobalt manganese hydroxide precursor is prepared by adopting a coprecipitation method; then, a doped layer and a coating layer are synthesized on the surface of the nickel cobalt manganese hydroxide precursor by adopting a solvothermal method; finally, calcination treatment is carried out to obtain the synergistically modified high-voltage positive electrode material. The synergistic modification strategy of bulk phase doping and surface coating effectively guarantees the stability of the interface and bulk structure, the preparation process is simple, and the electrochemical performance of the positive electrode material under high voltage, high cycle, high rate or high-temperature environment is improved.
Owner:DEEPAL AUTOMOBILE TECH CO LTD
A TiNb2O7-synergistically modified high-nickel ternary cathode material, its preparation method and application
The application provides a TiNb2O7 synergistically modified high-nickel ternary positive electrode material and a preparation method and application thereof. The preparation method of the TiNb2O7 synergistically modified high-nickel ternary positive electrode material is characterized in that: TiNb2O7 with a Wadsley-Roth structure is used, an in-situ self-assembly process of early surface anchoring and later gradient diffusion is used, and a multi-level structure of "surface coating-transition layer doping-core unchanged" is constructed in the particle interior. Ti and Nb elements in the TiNb2O7 diffuse to the bulk phase in the high-temperature crystallization and self-assembly process, and the structure is stabilized from the interior. The TiNb2O7 which is not diffused or partially converted and a lithiumated product thereof remain on the surface to form a protective layer, so that the capacity, stability and rate performance of the high-nickel material are synergistically improved.
Owner:JINGMEN GEM NEW MATERIAL CO LTD +1