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Preparation method for lithium battery anode material by taking metal organic frame as template

A metal-organic framework, negative electrode material technology, applied in battery electrodes, electrolyte battery manufacturing, secondary batteries, etc., can solve problems such as small specific capacity, achieve high charge-discharge specific capacity, high Coulomb efficiency, good cycle stability and Effect of magnification performance

Inactive Publication Date: 2016-09-07
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

But so far, lithium-ion batteries using MOF materials directly as electrodes have disadvantages such as small specific capacity (Lin Y, Zhang Q, Zhao C, et al. An exceptionally stable functionalized metal–organic framework for lithium storage[J].Chemical Communications ,2015,51(4):697-699.)

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  • Preparation method for lithium battery anode material by taking metal organic frame as template
  • Preparation method for lithium battery anode material by taking metal organic frame as template
  • Preparation method for lithium battery anode material by taking metal organic frame as template

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preparation example Construction

[0030] A kind of preparation method of the negative electrode material of lithium battery with metal organic framework as the template of the present invention, comprises the following steps:

[0031] (1) Synthesis of organic ligand 4-p-methylphenyl-pyridine oxide (4,4-Hopybz): Weigh 4-bromopyridine hydrochloride, 4-carboxyphenylboronic acid and sodium carbonate into toluene, add four Triphenylphosphopalladium is used as a catalyst, after reacting at 80-100°C for 10-14h in a nitrogen atmosphere, filter the clear night, adjust the pH to acidic, precipitate and filter to obtain a white intermediate product; dry the intermediate product, add glacial acetic acid and hydrogen peroxide , After heating the reaction, the 4,4-Hopybz organic ligand was obtained by filtration.

[0032] (2) Synthesis of Pb-MOF material: Weigh Pb(NO 3 ) 2 Dissolve the ligand 4,4-Hopybz in the solvent, heat the reaction in the reactor, and cool down to room temperature after the reaction to obtain the Pb-...

Embodiment 1

[0040] This example describes in detail the preparation method of the lithium battery negative electrode material using the metal organic framework as the template.

[0041] A kind of preparation method of the lithium battery negative electrode material of the present invention using metal organic framework as template, comprises the following steps:

[0042] (1) Synthesis of organic ligand 4-p-methylphenyl-pyridine oxide (4,4-Hopybz)

[0043] see figure 1 , which is a schematic diagram of the synthesis reaction steps of the organic ligand in the present invention. Take by weighing 8mmol of 4-bromopyridine hydrochloride, 8mmol of 4-carboxyphenylboronic acid and 10mmol of anhydrous sodium carbonate and join in the toluene solution, add 0.01mmol of tetrakis triphenyl phosphopalladium, in catalyst tetrakis triphenyl Under the action of phospho-palladium and in a nitrogen atmosphere, react at 90 ° for 12 hours, filter to collect clear night, add dilute hydrochloric acid to adjus...

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Abstract

The invention discloses a preparation method for a lithium battery anode material by taking a metal organic frame as a template. The preparation method of the lithium battery anode material comprises the steps of 1, synthesizing organic ligand 4, 4 Hopybz; 2, synthesizing a Pb-MOF material, weighing Pb(NO3)2 and the ligand 4, 4 Hopybz, dissolving the Pb(NO3)2 and the ligand 4, 4 Hopybz into solvent, carrying out heating and reacting in a reactor and cooling to a room temperature after reaction, thereby obtaining the Pb-MOF material; 3, preparing the lithium battery anode material, and heating to activate the Pb-MOF obtained in the step 2, thereby obtaining the lithium battery anode material. Compared with the prior art, the method has the advantages that a porous metal organic frame complex is synthesized, the complex is further activated, the complex is directly applied to a lithium battery as the anode material of the lithium battery, the structure and specific surface area of the metal organic frame are adjustable, and the prepared lithium battery anode material has good electrochemical performance.

Description

technical field [0001] The invention relates to the application field of lithium ion battery negative electrode materials, in particular to a preparation method of lithium battery negative electrode materials using a metal organic framework as a template. Background technique [0002] In the 1960s and 1970s, due to the outbreak of the first energy crisis and the increasing demand for mobile energy devices, scientists began research on secondary lithium-ion batteries, but until the early 1990s, lithium Research on ion batteries has made breakthrough progress. Lithium-ion batteries use layered lithium cobalt oxide (LiCoO 2 ) as the positive electrode, graphite (C) as the negative electrode, and a non-aqueous lithium-ion conductive medium as the electrolyte. Since lithium-ion batteries only pass through Li during charging and discharging + The intercalation and extraction in the active electrode material can overcome the shortcomings of metal lithium dissolution and reductio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M10/0525H01M10/058
CPCH01M4/60H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 林晓明胡磊牛继亮蔡跃鹏
Owner SOUTH CHINA NORMAL UNIVERSITY
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