A kind of preparation method and application of rice granular α-ferric oxide

A technology of ferric oxide and rice grains, applied in the direction of iron oxide, iron oxide/iron hydroxide, nanotechnology, etc., to achieve the effects of concentrated particle size distribution, good comprehensive electrochemical performance, and low production cost
CN102259933AInactive Publication Date: 2011-11-30CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2011-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method and application of rice-like alpha-iron trioxide. The preparation process adopts a hydrothermal reaction method, and the specific steps are as follows: first, mechanical stirring is used to uniformly disperse the iron salt and the surfactant in deionized water to obtain a mixed solution; the mixed solution is placed in a reactor for hydrothermal reaction; finally, the obtained The product is washed and freeze-dried to obtain a precursor; then the precursor is calcined at 200-900° C. for 1-40 hours, cooled to room temperature and ground to obtain red rice-like ferric oxide powder material. The invention has the advantages of wide source of raw materials, simple preparation method, convenient operation, green and pollution-free, and the obtained material has high structural purity, regular morphology and uniform particle size distribution. It can reach more than 1000mAh / g, and has better cycle life.
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Description

technical field

[0001] The present invention relates to a kind of preparation method and application of ferric oxide, especially a kind of grain-like α-ferric oxide (α-Fe 2 o 3 ) preparation method and application, which belong to the field of new material preparation method and application technology. Background technique

[0002] In recent years, the rapid development of electric tools, electric mopeds and electric vehicles has provided a broad application space for lithium-ion batteries, but at the same time it has put forward higher requirements for the performance of lithium-ion batteries. However, at present, graphite materials (theoretical capacity is 372mAh / g) are mainly used as the negative electrode in lithium-ion batteries, and its low theoretical capacity is the bottleneck that restricts lithium-ion batteries as future power batteries, so it is urgent to find a new generation of high specific energy electrodes. Material. α-Fe 2 o 3 As a lithium-ion battery a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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