Lead-carbon battery negative pole preparation method based on ZIF-8 zeoliteimidazate framework porous carbon nanomaterial

A zeolite imidazolate and nanomaterial technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., to achieve the effects of high specific surface area, inhibition of irreversible sulfation, and good physical properties

Active Publication Date: 2016-12-14
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the mechanism of action of carbon materials in lead-carbon batteries is different from the energy storage mechanism in supercapacitors, in order to obtain high-performance lead-carbon batteries, it is necessary to start with car

Method used

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  • Lead-carbon battery negative pole preparation method based on ZIF-8 zeoliteimidazate framework porous carbon nanomaterial
  • Lead-carbon battery negative pole preparation method based on ZIF-8 zeoliteimidazate framework porous carbon nanomaterial
  • Lead-carbon battery negative pole preparation method based on ZIF-8 zeoliteimidazate framework porous carbon nanomaterial

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Embodiment 1

[0031] A preparation method of a lead-carbon battery negative electrode based on a ZIF-8 zeolite imidazolate framework porous carbon nanomaterial, comprising the following steps:

[0032] (1) Under the condition of magnetic stirring, 7.71g metal nitrate Zn(NO 3 ) 2 ·6H 2 O was dissolved in 750ml of anhydrous methanol to form a colorless and clear solution A; 9.84g of organic ligand 2-methylimidazole was dissolved in the above solution to form a clear solution B, and the clear solution B continued to be magnetically stirred until it became turbid to form an emulsion. The prepared emulsion was aged for 24 h, centrifuged at 7000 rad / min and washed 3 times to obtain a white paste. The prepared white paste was dried for 8 hours in a blast dryer at 60°C, and dried in a vacuum oven at 105°C for 5 hours to obtain a ZIF-8 zeolite imidazolate skeleton, whose XRD pattern is as follows: figure 1 shown;

[0033] (2) Grind the dried ZIF-8 material in an agate mortar for 30 min, and keep...

Embodiment 2

[0039] A preparation method of a lead-carbon battery negative electrode based on a ZIF-8 zeolite imidazolate framework porous carbon nanomaterial, comprising the following steps:

[0040] (1) Under the condition of magnetic stirring, 7.71g metal nitrate Zn(NO 3 ) 2 ·6H 2 O was dissolved in 750ml of anhydrous methanol to form a colorless and clear solution A; 9.84g of organic ligand 2-methylimidazole was dissolved in the above solution to form a clear solution B, and the clear solution B continued to be magnetically stirred until it became turbid to form an emulsion. The prepared emulsion was aged for 24 h, centrifuged at 6000 rad / min and washed 3 times to obtain a white paste. The prepared white paste was dried in a blast dryer at 60°C for 10 hours, and dried in a vacuum oven at 100°C for 5 hours to obtain a ZIF-8 zeolite imidazolate skeleton;

[0041] (2) Grind the dried ZIF-8 material in an agate mortar for 30 min, and keep it in a tube furnace with a nitrogen atmosphere ...

Embodiment 3

[0047] A preparation method of a lead-carbon battery negative electrode based on a ZIF-8 zeolite imidazolate framework porous carbon nanomaterial, comprising the following steps:

[0048] (1) Under the condition of magnetic stirring, 7.71g metal nitrate Zn(NO 3 ) 2 ·6H 2 O was dissolved in 750ml of anhydrous methanol to form a colorless and clear solution A; 9.84g of organic ligand 2-methylimidazole was dissolved in the above solution to form a clear solution B, and the clear solution B continued to be magnetically stirred until it became turbid to form an emulsion. The prepared emulsion was aged for 24 h, centrifuged at 7000 rad / min and washed twice to obtain a white paste. The prepared white paste was dried in a blast dryer at 60°C for 9 hours, and dried in a vacuum oven at 105°C for 5 hours to obtain a ZIF-8 zeolite imidazolate skeleton;

[0049] (2) Grind the dried ZIF-8 material in an agate mortar for 30 min, and keep it in a tube furnace with a nitrogen atmosphere at ...

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Abstract

The invention provides a lead-carbon battery negative pole preparation method based on a ZIF-8 zeoliteimidazate framework porous carbon nanomaterial and belongs to the technical field of lead-carbon battery negative polematerials. The ZIF-8 zeoliteimidazate framework porous carbon nanomaterial is a porous carbon material prepared by conducting annealing on a metal organic framework material synthesized by using zinc as metal ions and using 2-methyl imidazole as an organic ligand under protective atmosphere. Lead and the ZIF-8 zeoliteimidazate framework porous carbon nanomaterial are grinded and mixed in a ball mill. A lead-carbon battery can effectively inhibit irreversible sulfation occurred on a negative pole plate during charging and discharging and has superior high rate capability and excellent cycle performance. A negative pole can be used for large commercial energy storage lead-carbon batteries.

Description

technical field [0001] The invention relates to a preparation method of a lead-carbon battery negative electrode based on a ZIF-8 zeolite imidazolate framework porous carbon nanomaterial, and belongs to the technical field of lead-carbon battery negative electrodes. technical background [0002] The lead-carbon battery is a new type of energy storage device formed by combining the "battery" of the lead-acid battery and the "capacitance" of the supercapacitor. Compared with traditional lead-acid batteries, it can effectively inhibit the sulfation of the negative electrode, especially under high-rate partial charge state (HRPSoC) conditions, and its service life can reach 3 to 10 times that of traditional lead-acid batteries. The power density is increased by 20% to 50%, achieving a breakthrough in high rate charge and discharge and high cycle life. The key to lead-carbon battery technology is to apply capacitive carbon materials (such as activated carbon, carbon black, graph...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M4/14H01M4/20
CPCH01M4/14H01M4/20H01M4/364H01M4/57H01M4/628Y02E60/10
Inventor 汪浩徐小龙严辉刘晶冰
Owner BEIJING UNIV OF TECH
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