1results about How to "Regular crystal form" patented technology

This invention discloses a low-temperature solid-phase synthesis method for manganese tetroxide, belonging to the field of inorganic functional material preparation technology. The preparation method includes: preparing a targeted organic ammonium salt surface modifier; preparing a composite precursor by high-energy ball milling of a manganese source (γ-type MnOOH) and a rhombohedral MnCO3, a modifier, and a composite auxiliaries; obtaining a crude product through a low-temperature solid-phase reaction at 220-350℃ under a nitrogen or argon inert atmosphere; and obtaining the final product through fluidized bed desorption, air jet milling depolymerization, sieving, acid washing, and vacuum drying. To address the shortcomings of existing solid-phase synthesis methods, such as high energy consumption, easy generation of impurities, and product agglomeration, this invention proposes a synergistic regulation and low-temperature solid-phase synthesis technology. Through specific manganese source formulation and the synergistic effect of modifiers and auxiliaries, pure-phase synthesis at 220-350℃ is achieved, solving problems such as high-temperature dependence and impurity phase formation. The product has a regular crystal structure, high purity, and good dispersibility, making it suitable for high-end lithium-ion battery cathode materials and other applications. The process is energy-efficient and environmentally friendly.