Preparation method for iron phosphate nanosheets

A nano-flaky, iron phosphate technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of complex and cumbersome operations, large particles, and long time consumption, and achieve high purity, large specific surface area, and accelerated ionization speed effect
CN110294466AActive Publication Date: 2019-10-01SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Publication Date
2019-10-01

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Abstract

The invention discloses a preparation method for iron phosphate nanosheets. The preparation method comprises the steps that iron black is slowly added to phosphoric acid with the concentration of 1.5-3.0 mol / L, stirring and heating are conducted for reacting, and after the reaction, the iron phosphate nanosheets are obtained through suction filtration, washing, drying, dewatering and other steps.The iron phosphate prepared by using the method has a nanosheet-shaped morphology, the thickness of the nanosheets is 70-80 nanometers, and the specific surface area is high. By optimizing the reaction conditions, in the reaction procsess, the pH value does not need to be adjusted, and no oxidizing agents are added; the interference with anionic and cationic impurities is effectively avoided, theiron phosphate obtained by using the method is free of impurity phases and high in purity. Besides, less water is used for washing iron phosphate precipitation, the iron phosphate synthesizing cost isreduced, and the pollution to the environment is reduced. The technology is simple, operation is convenient, industrial production is facilitated, and the preparation method is wide in application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of energy materials, and in particular relates to a preparation method of nano-flaky iron phosphate. Background technique

[0002] With the development of the economy, the problem of energy shortage and environmental pollution has become increasingly prominent, and lithium-ion batteries have attracted widespread attention as a new type of clean energy. Lithium-ion batteries have outstanding advantages such as high energy density, high working voltage, good cycle performance, no memory effect and small self-discharge, and have been widely used in small electronic devices. In addition, lithium-ion batteries are also used in new energy electric vehicles as automotive power batteries. In recent years, the output of lithium-ion batteries has been increasing, and the application fields are also expanding. It has gradually become an indispensable part of people's daily life and national economy.

[0003] Lithium ...

Claims

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