Method for preparing sodium-doped lithium ferrous silicate/carbon nano-micro structure composite cathode material

A composite positive electrode material, lithium ferrous silicate technology, applied in the direction of structural parts, battery electrodes, electrical components, etc., can solve the problems of low electronic conductivity and poor diffusion performance, and achieve uniform particle distribution, high rate performance, excellent Effect of rate performance and cycle performance
CN105375013AInactive Publication Date: 2016-03-02CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2016-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of lithium ion battery manufacturing, and especially a method for preparing a sodium-doped lithium ferrous silicate / carbon nano-micro structure composite cathode material. The method comprises the following steps: adding citric acid, lithium hydroxide, sodium hydroxide and ferrous oxalate into water, stirring and dissolving, performing oil bath and forming a deep green solution; and adding nanosilicon dioxide to obtain a sol, spray drying to obtain a precursor of the sodium-doped lithium ferrous silicate / carbon nano-micro structure composite cathode material, and calcinating in argon to obtain the sodium-doped lithium ferrous silicate / carbon nano-micro structure composite cathode material. The method for preparing the sodium-doped lithium ferrous silicate / carbon nano-micro structure composite cathode material provided by the invention is simple and safe in process, low in cost, and the obtained sodium-doped lithium ferrous silicate / carbon nano-micro structure composite cathode material is uniform in particle distribution and excellent in electrochemical performance.
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Description

technical field

[0001] The invention relates to the technical field of manufacturing lithium ion batteries, in particular to a method for preparing sodium-doped lithium ferrous silicate / carbon nanostructure composite cathode materials. Background technique

[0002] With the decreasing of non-renewable energy such as oil, coal and natural gas, and the deteriorating problems of greenhouse effect and environmental pollution caused by their use, the development of new energy mainly based on renewable energy and the development of low-carbon economy are the solution to these two problems. important path to the problem. At present, countries all over the world are striving to develop and utilize green and environmentally friendly renewable energy, such as water energy, wind energy, solar energy, biomass energy, etc., and realize the effective conversion and storage of energy. Among many energy storage batteries, lithium-ion batteries have been widely used in portable appliances (...

Claims

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