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Method for synthesizing nanoelectrode materials using an ultra-fast combustion method, and nanoelectrode materials synthesized by the method

A technology of nano-electrode and synthesis method, which is applied in the direction of nano-technology, nano-technology, battery electrodes, etc., can solve the problems of low time efficiency, increase the complexity of synthesis process, etc. The effect of stabilizing electrochemical properties

Active Publication Date: 2013-03-13
IND FOUND OF CHONNAM NAT UNIV
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Problems solved by technology

[0007] However, in order to synthesize LiFePO with high crystallinity using the above-mentioned existing solid-state reaction method, sol-gel method, hydrothermal synthesis method, and co-precipitation method 4 , need to go through high-temperature heat treatment process, and the polyol method also needs to go through cleaning process, filtration and drying process, which not only increases the complexity of the synthesis process, but also has low time efficiency

Method used

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  • Method for synthesizing nanoelectrode materials using an ultra-fast combustion method, and nanoelectrode materials synthesized by the method
  • Method for synthesizing nanoelectrode materials using an ultra-fast combustion method, and nanoelectrode materials synthesized by the method
  • Method for synthesizing nanoelectrode materials using an ultra-fast combustion method, and nanoelectrode materials synthesized by the method

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preparation example Construction

[0051] The nanometer electrode material synthesis method of the present invention comprises: the step of mixing polyols solvent, transition metal compound, polyacid anion compound and flammable liquid to prepare a reaction solution; and the burning step of burning the reaction solution. In the burning step, preferably, after pouring the reaction solution on a flat substrate heated to 25° C. to 300° C. to disperse it, a fire is ignited on the reaction solution to completely burn the reaction solution.

[0052] Specifically, the step of preparing the reaction solution is to prepare a polyol solvent, and mix the transition metal compound, polyacid anion compound, lithium compound solution and flammable liquids in the polyol solvent to prepare the reaction solution.

[0053] In the present invention, the polyol solvent not only plays a role as a solvent and a stabilizer in the synthesis process, but also can prevent particle growth, and the polyol solvent can create a reducing atmo...

no. 1 example

[0065] The transition metal compound Fe(CH 3 COO) 2 and phosphate ion compound H 3 PO 4 , lithium compound CH 3 COOLi and flammable liquids were used as diluents to prepare reaction solutions. Fe(CH 3 COO) 2 :H 3 PO 4 :CH 3 The molar ratio of COOLi is mixed in a ratio of 1:1:1, and the diluent is about 1 / 5 of the total amount of the added solution, that is, TTEG:diluent is mixed in a volume ratio of 5:1.

[0066] Then, after pouring about 25 ml of the reaction solution on a flat heating plate heated to about 100° C. to spread it evenly, the reaction solution was ignited to completely burn it. After complete combustion and natural fire extinguishing, the particles were recovered on the heating plate to obtain nano-electrode material 1, namely LiFePO 4 .

no. 2 example

[0068] As a transition metal compound, in addition to using Mn(CH 3 COO) 2 Besides, LiMnPO4 which is the nano-electrode material 2 was obtained by the same method as that of the first embodiment.

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Abstract

The present invention relates to a method for synthesizing electrode materials, and more particularly, to a method for synthesizing nanoelectrode materials using an ultra-fast combustion method and to nanoelectrode materials synthesized by the method, wherein the method for synthesizing nanoelectrode materials uses an ultra-fast combustion method to eliminate the necessity of a process for heat-treating reaction products as well as of other additional processes such as cleaning, filtering, and drying processes required for the synthesis of electrode materials, to thereby obtain products in several seconds to several minutes.

Description

technical field [0001] The present invention relates to a synthesis method of an electrode material, in particular to an ultra-fast combustion method, which completely does not need to go through the heat treatment process of the reaction product required for the synthesis of the electrode material and other additional processes, namely cleaning, filtering and drying processes. A method for synthesizing a nanometer electrode material that can obtain a product within minutes and a nanometer electrode material synthesized by the method. Background technique [0002] With the rapid development of various information and communication mobile IT products such as the electronics industry and mobile communications, secondary batteries have been widely popularized, and relying on the production technology of hybrid electric vehicles, the requirements for batteries with large capacity and high energy density are increasing day by day. Among them, the requirements for lithium secondar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00H01L21/28
CPCH01M4/5825H01M4/587Y02E60/122H01M4/625H01M4/366H01M4/131B82B3/00C01B25/45H01M10/052H01L21/28Y02E60/10
Inventor 金在国金恩贞俞仁善林真燮
Owner IND FOUND OF CHONNAM NAT UNIV
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