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Preparation method of ZnO/sisal fiber-based carbon composite material and application thereof

A carbon composite material, sisal fiber technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, electrical components, etc. Simple and effective in reducing hydrogen evolution

Inactive Publication Date: 2019-03-08
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, lead-carbon batteries add a carbon material with a hydrogen evolution overpotential lower than that of the lead surface in the negative electrode, which intensifies the hydrogen evolution phenomenon. The current solution is to add a hydrogen evolution inhibitor to the lead-carbon battery negative electrode to suppress the hydrogen evolution phenomenon. Most of the additives are directly added to the negative electrode. Although this suppresses the occurrence of hydrogen evolution at the negative electrode, it also causes the pores of some carbon materials to be blocked by the hydrogen evolution inhibitor, preventing the electrode reaction from occurring, resulting in attenuation of battery life.

Method used

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  • Preparation method of ZnO/sisal fiber-based carbon composite material and application thereof
  • Preparation method of ZnO/sisal fiber-based carbon composite material and application thereof
  • Preparation method of ZnO/sisal fiber-based carbon composite material and application thereof

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Embodiment

[0025] The present invention is further illustrated below in conjunction with specific examples, but the examples do not limit the protection scope of the present invention.

[0026] The concrete steps of preparing ZnO / sisal fiber-based carbon composite material are:

[0027] After cleaning the sisal fiber with distilled water, it is placed in an oven for drying, and the temperature of the oven is set at 90°C. The dried sisal fiber is cut into 1 centimeter with scissors again, and the sodium hydroxide solution that the mass percent concentration is 5% is poured in the sisal fiber and soaked 24 hours. Then soak in 5% phosphoric acid solution for 24 hours with mass percent concentration. After soaking, the sisal fibers were fished out and dried in a vacuum drying oven for 8 h at a set temperature of 90 °C.

[0028] Put the dried sisal fiber into a closed grinder for grinding, and grind it into 300-400 mesh sisal fiber powder. Weigh 2.0 g sisal fiber powder and 0.37 g Zn(OH) ...

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Abstract

The invention discloses a preparation method of a ZnO / sisal fiber-based carbon composite material and an application thereof. The preparation method comprises the steps of first, pretreating a sisal fiber, mainly treating surface impurities and low polymer molecules of the sisal fiber through an acid-alkali two-step treatment method; and then preparing the ZnO / sisal fiber-based carbon composite material by taking the pretreated sisal fiber and zinc hydroxide as raw materials and adopting an in-situ carbon-thermal synthesis method. The prepared ZnO / sisal fiber-based carbon composite material isapplied to preparation of a negative electrode material; and the abovementioned material has good hydrogen evolution inhibition and electrochemical performance through detection and analysis of an electrochemical workstation.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a preparation method and application of a ZnO / sisal fiber-based carbon composite material. Background technique [0002] With the development of new energy and non-fossil energy, the effective development of new energy vehicles has become a major trend, and the application of lead-carbon batteries in the fields of new energy vehicle batteries and energy storage batteries has great prospects and opportunities. As a combination of lead-acid batteries and supercapacitors, lead-carbon batteries not only have the specific energy advantages of lead-acid batteries and good charge and discharge performance, but also combine the advantages of supercapacitors with instantaneous large-capacity charging, and have broad market prospects. [0003] However, lead-carbon batteries add a carbon material with a hydrogen evolution overpotential lower than that of the lead surface in t...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38H01M4/48H01M4/62H01M10/12
CPCH01M4/362H01M4/38H01M4/48H01M4/625H01M4/628H01M10/12Y02E60/10Y02P70/50
Inventor 刘峥王浩梁秋群陈浩东韦楚楚
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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