Method for preparing trihydroxy cobalt hydroxide

Abstract

The invention relates to a method for preparing trihydroxy cobalt hydroxide, which comprises the following steps of: adding an appropriate amount of cobalt chloride and hexadecyl trimethyl ammonium chloride into mixed liquor of N,N-dimethylformamide and deionized water, and slightly stirring to form red uniform solution; adding 30 weight percent of hydrogen peroxide, fully mixing, screwing a reaction kettle, putting into a drying box, and standing at the temperature of 150 DEG C; and performing centrifugal separation on a product, and washing for multiple times to obtain the product. Comparedwith the prior art, the method has the advantages that: a new type of trihydroxy cobalt hydroxide is synthesized by a hydrothermal method, is well crystallized, and has controllable size and structure, high purity and definite components; the preparation method is simple and practicable, and high in operability and repeatability; and the powdered product has stable performance, can be stored in air at room temperature for a long time, and can be widely used for the fields of energy batteries, catalysis, electrochemistry, gas sensors, magnetics and the like.

Description

technical field [0001] The invention relates to a method for preparing inorganic materials, in particular to a method for preparing cobalt trihydroxide hydroxide. Background technique [0002] Cobalt hydroxide is a functional material with a wide range of uses. It is often used as an additive for Ni / MH battery cathode materials to improve the capacitance and conductivity of β-NiOOH batteries" Synthesis of CoOOH nanorods and application as coating materials of nickel hydroxide for high temperature [0003] The preparation of cobalt hydroxide is a research hotspot at present. Some synthetic methods such as liquid phase precipitation "Synthesis of the CoOOH fine nanoflake film with the high rate capacitance property" [Hosono E, Fujihara S, Honma I, Ichihara M and Zhou H S J. Power Sources, 158, 779-783 (2006)], Precursor conversion "Microwave-assisted synthesis of β-C(OH) 2 and Co3O4nanosheets via a layered precursor conversion method” [Liang Z, Zhu Y, Cheng G and Huang Y.Can...

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Problems solved by technology

Some synthetic methods such as liquid phase precipitation "Synthesis of the CoOOH fine nanoflake film with the high rate capacitance property" [Hosono E, Fujihara S, Honma I, Ichihara M and Zhou H S J. Power Sources, 158, 779-783 (2006)], Precursor conversion "Microwave-assisted synthesis of β-C(OH) 2 and Co3O4nanosheets via a layered precursor conversion method” [Liang Z, Zhu Y, Cheng G and Huang Y.Can.J.Chem.84, 1050-1053(2006)] and the electrochemical deposition method “Directlow-temperature deposition of crystallized CoOOH films by potentiostatic electrolysis”[Pauporte T, Mendoza L, Cassir M, Bernard M C and Chivote J.J.electrochem.Soc.152, C49-C53(2005)] etc. are used for the preparation of cobalt hydroxide products, however, various preparation studies The types of cobalt hydroxide involved are limited, usually only β-C(OH) 2 and CoOOH; and, due to the crystal structure of cobalt hydroxide itself, the structure of the synthesized product through the above-mentioned route is not highly adjustable.

This will greatly limit the research of cobalt hydroxide materials in various related aspects and the optimization and improvement of application performance

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