Preparation method of ordered manganese oxide

Abstract

The invention provides a method for preparing ordered manganese oxides. 1) Take a certain amount of saturated oxalic acid solution; 2) Add manganese nitrate to the oxalic acid solution at a ratio of 3-5 mmol of manganese nitrate per 0.1L of saturated oxalic acid solution, and stir on a magnetic stirrer to make a uniform Mix the solution; 3) magnetically stir at room temperature until a large amount of precipitation appears; 4) wash the precipitate obtained in 3) with alcohol and distilled water several times in sequence to obtain a precursor; 5) dry the precursor at 80°C; 6) dry the The dry precursor was ground into a fine powder and calcined at 800°C for 6 hours to obtain the product. The shape of the product obtained by the method of the invention is close to a rod shape, and is arranged in order to form a large sheet. The synthesis cost is low, the synthesis steps are few, the operation is simple, the reaction conditions are mild, environmental protection and energy saving, the conditions to be controlled are few and easy to implement, and it is very promising to be applied to large-scale production.

Description

(1) Technical field [0001] The invention relates to a method for preparing a compound, in particular to a method for preparing orderly arranged manganese oxide nanopowder. (2) Background technology [0002] Manganese oxides have various electrical, magnetic and catalytic properties, among which bixbyite-type Mn 2 o 3 It is a solid-state method for the synthesis of LiMn, the cathode material for lithium-ion secondary batteries. 2 o 4 One of the best raw materials for lithium-ion secondary batteries, LiMn can be easily prepared as a manganese source. 2 o 4 Spinel, as a catalyst, is widely used in the oxidation catalysis of carbon monoxide and organic pollutants and the reduction reaction of nitrogen oxides, so it has attracted extensive attention. mn 2 o 3 The size and morphology of particles have a significant impact on their physical and chemical properties, therefore, the synthesis of high-quality Mn with different morphologies 2 o 3 Powder has important applicatio...

AI Technical Summary

Problems solved by technology

However, the current research on it mainly focuses on the synthesis of powder or nanoscale crystals, and rarely involves the synthesis of its ordered arrangement.

Moreover, many synthetic methods are difficult to obtain bixbyite Mn 2 o 3 The pure phase of the mixed phase is obtained instead, which is very important for the synthesis of the positive electrode material LiMn with excellent performance. 2 o 4 Extremely unfavorable

Images