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External-applying lead carbon battery negative electrode preparation method

A lead-carbon battery and negative electrode technology, which is applied in lead-acid battery electrodes, battery electrodes, lead-acid batteries, etc., can solve the problems of not comprehensively solving the connectivity problem, ignoring the interaction between carbon and electrolyte, and improving the effective utilization. efficiency, increased strength, and low internal resistance

Inactive Publication Date: 2019-11-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patents only focus on the physical force and structural design between lead and carbon, ignoring the interaction between carbon and electrolyte, so the connectivity problem is still not fully resolved

Method used

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  • External-applying lead carbon battery negative electrode preparation method
  • External-applying lead carbon battery negative electrode preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The specific surface area of ​​70g is 2000m 2 Immerse the mixed material of activated carbon, 10g graphite, and 15g polyacrylonitrile in absolute ethanol, heat to 85°C, heat and stir at a constant temperature for 1h, and cool naturally to a viscosity that is convenient for coating to obtain a carbon paste;

[0038] Add 3g of ethylene oxide solid into 47g of water, heat to 60°C and stir at constant temperature, and obtain a transparent and uniform gel electrolyte after 8 hours;

[0039] 100g of lead powder, 0.5g of humic acid, 0.83g of 40mm polyester staple fiber, 0.8g of barium sulfate, 0.2g of sodium lignosulfonate, and 0.2g of acetylene black are evenly mixed to make an active substance. The active substance of 10.5g is slowly added successively to the water of 10.5g and the 4.7mol / L sulfuric acid of 8.3g (drop rate is 2mL / s) and stirs to make lead plaster;

[0040] Firstly, the prepared lead paste is coated on a 4*7cm lead alloy grid, dried and solidified to prepare...

Embodiment 2

[0047] 85g specific surface area 100m 2 Immerse the mixed material of graphite / g of graphite, 10g of acetylene black, and 5g of polytetrafluoroethylene in absolute ethanol, heat to 85°C, heat and stir at a constant temperature for 1h, and cool naturally to a viscosity that is convenient for coating to obtain a carbon paste; Add 5g of polyaniline solid into 50g of water, heat to 90°C and stir at constant temperature, and obtain a transparent and uniform gel electrolyte after 2 hours;

[0048]100g of lead powder, 0.5g of humic acid, 0.83g of 40mm polyester staple fiber, 0.8g of barium sulfate, 0.2g of sodium lignosulfonate, and 0.2g of acetylene black are evenly mixed to make an active substance. The active substance of 10.5g is slowly added successively to the water of 10.5g and the 4.7mol / L sulfuric acid of 8.3g (drop rate is 2mL / s) and stirs to make lead plaster;

[0049] Firstly, the prepared lead paste is coated on a 4*7cm lead alloy grid, dried and solidified to prepare a...

Embodiment 3

[0056] 80g specific surface area 100m 2 Immerse the mixed material of 1 / g activated carbon, 10g acetylene black, and 10g polytetrafluoroethylene in absolute ethanol, heat to 75°C, heat and stir at a constant temperature for 1h, and cool naturally after reaching a viscosity that is convenient for coating to obtain a carbon paste; Add 4g of polyvinyl alcohol solid into 50g of water, heat to 90°C and stir at constant temperature, and obtain a transparent and uniform gel electrolyte after 2 hours;

[0057] 100g of lead powder, 0.5g of humic acid, 0.83g of 40mm polyester staple fiber, 0.8g of barium sulfate, 0.2g of sodium lignosulfonate, and 0.2g of acetylene black are evenly mixed to make an active substance. The active substance of 10.5g is slowly added successively to the water of 10.5g and the 4.7mol / L sulfuric acid of 8.3g (drop rate is 2mL / s) and stirs to make lead plaster;

[0058] Firstly, the prepared lead paste is coated on a 4*7cm lead alloy grid, dried and solidified ...

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Abstract

The invention discloses an external-applying lead carbon battery negative electrode preparation method. The negative electrode comprises an external-applying activated carbon layer and a gel electrolyte layer for protecting the carbon layer. The plate is composed of a lead paste (lead powder, humic acid, short fiber, barium sulfate, sodium lignosulfonate, acetylene black, sulfuric acid, and pure water) and a carbon layer. Through adding a suitable binder to the carbon layer preparation and laminating the carbon layer on the surface of the plate with suitable pressure, the physical connection between the carbon phase and the lead phase and the charge transport ability on the lead-carbon interface are enhanced. Through applying the gel electrolyte on the surface of the plate containing the carbon layer, the purposes of protecting the carbon layer from falling off and suppressing hydrogen evolution from the carbon layer can be achieved. The plate formed by the carbon layer can improve thecharging acceptance of the negative electrode and the effective utilization rate of the activated material, the negative electrode sulfation phenomenon under a high-rate partial charge state can be alleviated, and the whole power density and the cycle life of the battery are improved.

Description

Technical field: [0001] The invention relates to a lead-carbon battery, in particular to a negative electrode composition of a lead-carbon battery. Background technique: [0002] With the gradual popularization of electrified equipment, people's demand for energy storage equipment is increasing day by day. As an energy storage device with a history of nearly two hundred years, lead-acid batteries have the advantages of low cost, good low temperature stability, safety and reliability. However, its low energy density and short cycle life limit its application range. [0003] Lead-carbon batteries are known as the next generation of lead-acid batteries, which add carbon materials to the negative electrodes of lead-acid batteries. Because carbon materials have good electrical conductivity, chemical stability in strong acid environments, and a specific surface area much higher than that of pure lead, compared with traditional lead-acid batteries, the sulfation of the negative e...

Claims

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Application Information

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IPC IPC(8): H01M4/20H01M4/57H01M4/62H01M10/06
CPCH01M4/20H01M4/57H01M4/625H01M10/06Y02E60/10
Inventor 林海波郭家祥
Owner JILIN UNIV
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