Preparation method and application of carbon-coated Fe3O4 nanoparticle lithium ion battery negative electrode material

A lithium-ion battery and nanoparticle technology, applied in battery electrodes, nanotechnology, secondary batteries, etc., can solve the problems of difficult control of microscopic morphology and structure, high production cost, large particle size, etc., and achieve good conductivity And the effect of stabilizing electrochemical performance, improving stability, and excellent electrochemical performance
CN104993126AInactive Publication Date: 2015-10-21HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2015-10-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method and an application of a carbon-coated Fe3O4 nanoparticle lithium ion battery negative electrode material, and relates to an electrode used in a lithium storage battery and formed based on an oxide active material; the preparation method is a method for preparing the carbon-coated Fe3O4 nanoparticle lithium ion battery negative electrode material by a hydrothermal method and a high temperature calcination process and comprises the steps: preparation of precursor carbon-coated Fe2O3 nanoparticles, preparation of a carbon-coated Fe3O4 nanoparticle powder, and preparation of the carbon-coated Fe3O4 nanoparticle lithium ion battery negative electrode material. The carbon-coated Fe3O4 nanoparticle lithium ion battery negative electrode material is applied as a lithium ion battery negative electrode piece for assembly of a semi-battery. The defects that carbon-coated Fe3O4 nanoparticles prepared in the prior art have larger particle size, the microtopography and the structure are difficult to control, a lithium ion battery negative electrode material prepared by the carbon-coated Fe3O4 nanoparticles has not good electrochemical performance, the preparation process is complex and the production cost is high are overcome.
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Description

technical field

[0001] The technical solution of the present invention relates to electrodes for lithium batteries consisting of oxide-based active materials, in particular carbon-coated Fe 3 o 4 Preparation method and application of nanoparticle lithium ion battery negative electrode material. Background technique

[0002] With the rapid development of the world economy and the excessive consumption of global resources, it is urgent to solve the problems of environmental pollution and energy depletion. As a new energy source, lithium-ion batteries have been widely focused due to their advantages of high energy density, long cycle life, high conversion efficiency and environmental friendliness. Today, lithium-ion batteries have been widely used in portable devices such as mobile phones and notebook computers, and will be used in electric vehicles and hybrid vehicles, so there are higher requirements for the capacity and rate discharge performance of lithium-ion batteries. ...

Claims

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