Method for preparing selenide ferrous iron nanometer flower

A technology for ferrous selenide and nanoflowers, which is applied in the fields of nanomaterials and electrochemistry, can solve the problems of unfavorable large-scale industrial production, high requirements for synthesis instruments, and high synthesis temperature, and achieves reduced energy consumption, low synthesis temperature, and repeatability. Good results
CN101559931AInactive Publication Date: 2009-10-21武汉理工力强能源有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武汉理工力强能源有限公司
Publication Date
2009-10-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a selenide ferrous iron nanometer flower. The material can be used as an active material of an anode of a lithium ion battery. The method for preparing the selenide ferrous iron nanometer flower comprises the following steps that: according to the ratio of 0.1 mol:0.1 mol:100 mL, selenium powder, sodium sulfite and deionized water are picked up, heated and stirred to obtain a solution of Na2SeSO3; 2) according to the ratio of 10g:100 mL, polyvinyl alcohol and distilled water are picked up, heated and stirred to obtain a water solution of polyvinyl alcohol; 3) according to the ratio of 2.5 mmol:5 mL:20 to 30 mL : 20 to 30 mL, F3C2O4, citric acid with the concentration of 1 M, the solution of Na2SeSO3 and the water solution of polyvinyl alcohol are picked up, mixed and stirred, and by adjusting the pH value of the system to be 8-10, an even rheological phase matter is obtained; 4) the obtained matter is kept at a temperature of between 160 and 180 for 10 to 24 hours and then naturally cooled to obtain a hydrothermal product; 5) the hydrothermal product is subjected to centrifugal separation; and 6) the hydrothermal product is dried to obtain the red brown selenide ferrous iron nanometer flower. The method has the characteristics of simple process and low synthetic temperature.
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Description

technical field

[0001] The invention belongs to the technical field of nanomaterials and electrochemistry, in particular to a ferrous selenide (FeSe 2 ) The preparation method of nano flower, this material can be used as lithium ion battery cathode active material. Background technique

[0002] Since Poizot et al. reported the lithium electrochemical behavior of transition metal oxide materials in 2000, compounds based on transition metals such as iron, cobalt, and nickel are considered to be a new class of lithium storage materials with great development potential. Research groups and Scientists have studied it extensively. Among these materials, iron compounds have more advantages than other transition metal compounds because iron has many advantages such as abundant reserves, low price, and environmental friendliness. On the other hand, nanomaterials have attracted widespread attention in the field of lithium-ion batteries due to their special structures and effects. T...

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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