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Preparation method and application method of a lead-carbon battery negative electrode additive material

An additive material, lead-carbon battery technology, applied in the preparation/purification of carbon, battery electrodes, lead-acid batteries, etc., can solve the problems of excessive hydrogen evolution of the negative plate, high energy consumption, poor economic benefits, etc., and increase the adsorption capacity. , the effect of high economic efficiency and large natural reserves

Active Publication Date: 2022-03-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding carbon materials to the negative electrode will cause excessive hydrogen evolution on the negative plate.
And according to the current literature reports, the preparation of lead-carbon composite materials usually adopts the method of using activated carbon materials as carbon substrates and carrying out lead loading to realize the composite modification of carbon materials and lead. This method is prepared from raw materials to final products. There are many steps involved, the energy consumption is large, and the economic benefit is poor

Method used

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  • Preparation method and application method of a lead-carbon battery negative electrode additive material
  • Preparation method and application method of a lead-carbon battery negative electrode additive material
  • Preparation method and application method of a lead-carbon battery negative electrode additive material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Peel the eggplants purchased in the vegetable market; place the peeled eggplants in saturated lead nitrate solution; soak for 24 hours; freeze the soaked eggplants at -40°C for 8 hours; then transfer them to a freeze dryer Dry at -60°C for 48h. The freeze-dried eggplant was placed in a tube furnace, heated to 700°C at 5°C / min under a nitrogen atmosphere, kept at 700°C for 3 hours, and then cooled naturally; the product after the above high-temperature treatment was washed, Dry to obtain the final desired product, and the lead-carbon composite material obtained in this example is used as a lead-carbon battery negative electrode additive.

[0039] The lead-carbon composite material prepared by the above method was characterized by scanning electron microscopy to study the microscopic morphology of the lead-carbon composite material. The results are as follows figure 1 shown. from figure 1 It can be clearly seen that after high-temperature calcination, the naturally exi...

Embodiment 2

[0043] Peel the eggplants purchased in the vegetable market; place the peeled eggplants in saturated lead nitrate solution; soak for 24 hours; freeze the soaked eggplants at -40°C for 8 hours; then transfer them to a freeze dryer Dry at -60°C for 48h. The freeze-dried eggplant was placed in a tube furnace, heated to 600°C at 5°C / min under a nitrogen atmosphere, and kept at 600°C for 3 hours, and then cooled naturally; the product after the above high-temperature treatment was washed, Dry to obtain the final desired product.

Embodiment 3

[0045] Peel the eggplants purchased in the vegetable market; place the peeled eggplants in saturated lead nitrate solution; soak for 24 hours; freeze the soaked eggplants at -40°C for 8 hours; then transfer them to a freeze dryer Dry at -60°C for 48h. The freeze-dried eggplant was placed in a tube furnace, heated to 800°C at 5°C / min under a nitrogen atmosphere, and kept at 800°C for 3 hours, and then cooled naturally; the product after the above high-temperature treatment was washed, Dry to obtain the final desired product.

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Abstract

The invention discloses a method for preparing a lead-carbon battery negative electrode additive material, which comprises the following steps: soaking the peeled eggplant in a lead source; freezing the peeled eggplant after soaking; freeze-drying the frozen peeled eggplant ; Under an inert atmosphere, calcining at high temperature in a tube furnace, washing, and drying to obtain a lead-carbon composite material, the lead-carbon composite material is added to the lead-acid battery negative electrode by 2% mass fraction as the lead-carbon battery negative electrode additive, and 76 The lead powder with % oxidation degree is 100%, which can effectively inhibit the hydrogen evolution reaction of the negative electrode of the lead-acid battery and prolong the cycle life of the lead-acid battery.

Description

technical field [0001] The invention relates to the field of lead-carbon battery materials, in particular to a preparation method and an application method of a lead-carbon battery negative electrode additive material. Background technique [0002] In the context of global environmental problems caused by the excessive use of traditional fossil energy, the concept of sustainable green development has increasingly received widespread support from all walks of life. As a new type of energy storage equipment, lead-acid batteries have the characteristics of low cost, high safety, long cycle life, large energy storage scale, and environmental friendliness (99% recovery rate), which makes lead-acid batteries still occupy an important position in the world today. Important position, is widely used in uninterruptible power supply, power grid and power vehicles and other fields. In recent years, lead-acid batteries have become a hot spot in the research of new energy storage systems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M10/06C01B32/05B22F9/18
CPCY02E60/10
Inventor 徐新高云芳管立
Owner ZHEJIANG UNIV OF TECH