Method for preparing lithium battery material by using plant fibers

A plant fiber and electrode material technology, applied in circuits, electrical components, battery electrodes, etc., can solve the problems of low capacity of negative electrode materials and difficulty in applying new negative electrode materials for lithium-ion batteries, etc., to improve lithium battery performance, rich in processing, and huge applications. Foreground effect

Active Publication Date: 2013-04-24
FUZHOU UNIV
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Problems solved by technology

[0005] In order to promote the development of the lithium-ion battery material industry and solve the problems of low capacity of existing commercial lithium-ion battery negative electrode materials and the difficulty of applying new lithium-ion battery negative electrode materials, the present invention provides a method for preparing lithium battery materials from plant fibers, making full use of natural Plant fibers have sufficient sources, have micro-nano pore structure, and can be converted into carbon materials after high-temperature treatment. Combining other new lithium-ion battery active materials with plant fibers to prepare composite materials will improve the preparation process and development of lithium-ion batteries. New lithium-ion battery materials provide support, which is conducive to the development of the lithium-ion battery industry

Method used

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  • Method for preparing lithium battery material by using plant fibers
  • Method for preparing lithium battery material by using plant fibers
  • Method for preparing lithium battery material by using plant fibers

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Embodiment Construction

[0018] The invention will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, this invention may be embodied in different forms and should not be construed as limited to only the embodiments set forth herein.

[0019] (1) Cotton fiber is selected as the raw material. The main component of cotton fiber is cellulose. Each cotton fiber is composed of multi-level fiber structure, and there are many pore structures inside. Firstly, the naturally mature fibers are cleaned with deionized water and alcohol, and the cleaning process is supplemented by ultrasonic treatment. The cotton fibers were then dried in a forced air oven at 70°C. Finally, the cotton fibers are crushed into small fiber segments with a length of about 1 mm.

[0020] (2) Through chemical methods, the cotton fiber is purified to remove pectin, gum, metal ions and other substances in the plant fiber. First, the crushed cotton...

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Abstract

The invention discloses a method for preparing a lithium battery material by using plant fibers. According to the method, the lithium ion battery electrode material is produced through the processes of pulverization, purification, loading of lithium ion battery active substances and carbonization by using plant fibers as the raw material. Based on the scheme disclosed by the invention, the composite material with a micro-nano mosaic structure can be prepared conveniently, and the raw materials have wide sources. According to the method, a support is provided for improving lithium ion battery production technology and developing novel lithium ion battery materials, and is beneficial for the development of the lithium ion battery industry is facilitated.

Description

technical field [0001] The invention belongs to the field of preparation of lithium battery materials, and in particular relates to a method for preparing lithium battery materials from plant fibers. Background technique [0002] Since the advent of lithium-ion batteries in the 1990s, as the third generation of rechargeable batteries, they have attracted much attention due to their high specific energy, good cycle performance, high working voltage, long life and low pollution, and have been widely used in Among various light portable devices, secondary batteries play an important role. However, in recent years, with the emergence of electric vehicles, the demand for high-power, high-capacity secondary batteries has intensified, and the requirements for lithium-ion battery materials and lithium-ion battery production processes have become higher and higher. Feasible, low-cost lithium-ion battery materials and further optimization of the production process have become the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60
CPCY02E60/12Y02E60/10
Inventor 杨尊先
Owner FUZHOU UNIV
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