Doped lithium manganate and preparation method and application thereof

• Main Authors: ZHAO XIAOLIAN, YANG LIANGLIANG, MIN TING, FANG GANG, CHEN YUESHENG, JIANG KAI
• Format: Patent
• Language: Chinese; English
• Published: 02.10.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention belongs to the technical field of material synthesis, and particularly relates to a doped lithium manganate preparation method, which comprises steps of S1, preparing a manganese-based precursor with controllable particle size distribution by using a soluble manganese salt, and uniformly mixing a doped substance and the manganese-based precursor to obtain a mixture A, or directly mixing the soluble manganese salt with the doped substance to prepare a mixture A containing the manganese-based precursor with controllable particle size distribution and the doped substance, S2, pretreating the mixture A, S3, mixing the pretreated mixture A with a lithium salt to obtain a mixture B, and S4, heating the mixture B in air or an oxidizing atmosphere, and carrying out a solid-phase sintering reaction to obtain the doped lithium manganate with controllable particle size. In addition, the invention also relates to doped lithium manganate and an application of the doped lithium manganate in a lithium ion batt