Preparation method of manganese-containing electrode material

Abstract

A preparation method of a manganese-containing electrode material is characterized by comprising the following steps of: dissolving 6mmol of EDTA-2Na and 5.25 mmol of manganese acetate in a mixed solution of water and ethanol, stirring and dissolving; adding 20 mmol of KF into the solution obtained in the previous step; dissolving cobalt acetate into water, and dropwise adding the solution into the coexisting liquid under continuous stirring; dividing the coexisting liquid into three parts, continuing to react at 30 DEG C, 40 DEG C and 50 DEG C respectively, carrying out centrifugal separationto obtain solid products, and marking the solid products as K (Mn<0.95>Co<0.05>) F<3>-30, K (Mn<0.95>Co<0.05>) F<3>-40 and K (Mn<0.95>Co<0.05>) F<3>-50 respectively; and washing the solid products with ethanol and distilled water for multiple times, collecting and drying the solid products at 60 DEG C for later use. The method can effectively inhibit the dissolution of manganese in the electrolyte, and can effectively improve the cycle performance of manganese.

Description

technical field [0001] The invention belongs to the technical field of battery electrodes, and in particular relates to a preparation method of a manganese-containing electrode material. Background technique [0002] Manganese-containing electrode materials are widely used in the fields of lithium-ion batteries, sodium-ion batteries and potassium-ion batteries. Manganese-containing electrode materials have the advantages of abundant resources, low cost, no pollution, good safety, and good rate performance. It is an ideal positive electrode material for power batteries, but due to the dissolving characteristics of manganese in the electrolyte, it has poor cycle performance, which greatly limits its industrialization. In order to promote the industrialization of manganese electrode materials, it is urgent to provide a method that can improve the cycle performance of manganese electrode materials. Contents of the invention [0003] Aiming at the above-mentioned problems in t...

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Problems solved by technology

[0002] Manganese-containing electrode materials are widely used in the fields of lithium-ion batteries, sodium-ion batteries and potassium-ion batteries. Manganese-containing electrode materials have the advantages of abundant resources, low cost, no pollution, good safety, and good rate performance. An ideal positive electrode material for power batteries, but due to the dissolving characteristics of manganese in the electrolyte, it has poor cycle performance, which greatly limits its industrialization.

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