A kind of preparation method of electrode material, electrode material, electrode and battery

An electrode material and electrode technology, applied in the fields of nanomaterials and chemical power sources, can solve the problems of complex preparation process, low capacity of iron oxide composite materials, environmental pollution, etc.

Active Publication Date: 2019-04-23
东莞凯德新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the modification of FeO electrode materials is mainly to compound it with carbon materials by chemical methods, and to use carbon sources such as carbon nanotubes, graphite, and acetylene black to coat and modify single-component FeO nanoparticles. Iron oxide composite materials generally have low capacity under high current charge and discharge conditions. On the other hand, the preparation process is complicated and the environmental pollution is serious.

Method used

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  • A kind of preparation method of electrode material, electrode material, electrode and battery
  • A kind of preparation method of electrode material, electrode material, electrode and battery
  • A kind of preparation method of electrode material, electrode material, electrode and battery

Examples

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Embodiment 1

[0025] Add 4.5g of ferric chloride hexahydrate, 12g of sodium acetate and 3.3g of polyethylene glycol into 160ml of ethylene glycol, and ultrasonically oscillate for 30 minutes to obtain a uniform mixed solution; The reaction was carried out for 12 hours. The hydrothermal product was successively cleaned by centrifugation with deionized water and absolute ethanol, and after vacuum freeze-drying at a temperature of -60°C and a pressure of 0 kPa for 6 hours, the product was obtained; ℃ for 8 hours, and cooled to room temperature to obtain a hollow spherical ferrous oxide and iron composite electrode material.

[0026] figure 1 is the XRD pattern of the obtained ferrous oxide and iron composite electrode material, by figure 1 The diffraction peaks of FeO and Fe can be seen in the material.

[0027] figure 2 and image 3 It is the morphology of the ferrous oxide and iron composite electrode material prepared in Example 1 observed under a scanning electron microscope. It can ...

Embodiment 2

[0032] Add 1g of ferric chloride hexahydrate, 6g of sodium acetate and 0.9g of polyethylene glycol into 80ml of ethylene glycol, and ultrasonically oscillate for 200 minutes to obtain a uniform mixed solution; React for 24 hours. The hydrothermal product was successively washed with deionized water and absolute ethanol, and vacuum freeze-dried at a temperature of 0°C and a pressure of 101kPa for 30 hours to obtain the product; Calcined for 5 hours and cooled to room temperature to obtain a hollow spherical ferrous oxide and iron composite electrode material.

[0033] The composite electrode material prepared in Example 2 and the polyvinylidene fluoride binder are prepared into an electrode in a mass ratio of 4:1, and the electrolyte solute is LiPF 6 , the solvent is mixed by ethylene carbonate, diethyl carbonate and dimethyl carbonate in a volume ratio of 1:1:1, LiPF 6 The concentration is 1mol / L, and the electrode and electrolyte are assembled to form a button battery.

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Abstract

The invention discloses a method for preparing an electrode material, the electrode material, an electrode and a battery. According to the preparation method, an iron(II) oxide and iron composite electrode material which is of a hollow spherical nanostructure can be obtained. The method comprises the steps of first evenly dissolving iron salt, sodium acetate and polyethylene glycol in ethylene glycol to obtain a mixed solution; placing the mixed solution in a reaction kettle to undergo hydrothermal reaction; cleaning the obtained product and performing freeze drying; finally placing the product in protective atmosphere to perform roasting to obtain the iron oxide and iron composite electrode material which is in a black powder shape, and utilizing the electrode material to prepare the electrode and the battery. The method for preparing the electrode material has the advantages that sources of raw materials are wide, and the preparation process is simple and safe, green and free of pollution; and the prepared iron(II) oxide and iron composite electrode material has very good structural stability and monodispersity and has good cycle life and rate capacity.

Description

technical field [0001] The invention relates to a preparation method of an electrode material, an electrode material, an electrode and a battery, and belongs to the technical field of nanometer materials and chemical power sources. Background technique [0002] The breakthroughs in synthetic material technology provide guarantees for the preparation and application of nanocomposites, among which the design and preparation of nanocomposites with different components is the frontier of research in recent years. This kind of nanostructure material has the following characteristics: it has two or more components; the functions of different components can be compounded and complemented; it presents some new functions. The unique physical and chemical properties of nanocomposites make them promising in many fields such as catalysis, drug delivery, microelectronics, photonic crystals, lithium-ion batteries, and sensors. [0003] Ferrous oxide (FeO) is a functional material with ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M4/36H01M4/48H01M4/139H01M4/1391H01M4/1395H01M10/0525
CPCH01M4/139H01M4/1391H01M4/1395H01M4/362H01M4/38H01M4/483H01M10/0525Y02E60/10
Inventor 洪树吴超许艳艳宋文峰李艳芬刘晓萌张艳
Owner 东莞凯德新能源有限公司
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