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Negative plate of lead acid super battery, production method and lead acid super battery assembled by negative plate

A technology of super battery and negative plate, applied in the direction of lead-acid battery electrodes, lead-acid batteries, battery electrodes, etc., can solve the problems of short working life of lead-acid super batteries, and achieve the purpose of suppressing hydrogen evolution on the surface, improving charge state, and good conductivity performance effect

Active Publication Date: 2012-10-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of short working life of the existing lead-acid super battery in the high-rate partial charge state, and to provide a negative plate of the lead-acid super battery, its preparation method and the lead-acid super battery assembled therewith. Battery

Method used

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  • Negative plate of lead acid super battery, production method and lead acid super battery assembled by negative plate
  • Negative plate of lead acid super battery, production method and lead acid super battery assembled by negative plate
  • Negative plate of lead acid super battery, production method and lead acid super battery assembled by negative plate

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specific Embodiment approach 1

[0019] Embodiment 1: This embodiment is a lead-acid super battery negative plate, including a negative electrode grid and a negative electrode paste coated on the negative electrode grid, wherein the outer surface of the negative electrode paste is covered with a capacitor carbon paste layer, and the negative electrode paste is coated with a carbon paste layer. Expanded mesophase carbon microspheres (MCMB) are added, wherein, the capacitor carbon paste layer consists of 70-80 parts by weight of activated carbon loaded with lead oxide, 5-10 parts of polytetrafluoroethylene, 0.1-1 part It is composed of sodium carboxymethyl cellulose, 0.1-2 parts of stearic acid and 5-20 parts of acetylene black, and the expanded mesophase carbon microspheres account for 0.1%-5% of the mass of the lead powder in the negative electrode paste.

[0020] In this embodiment, the high-performance supercapacitor material expansion mesophase carbon microspheres suitable for sulfuric acid electrolyte is m...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is that activated carbon, sub-nanometer graphite and conductive carbon black of loaded lead oxide (PbO) are also added in the negative electrode lead paste, wherein the mass of lead powder in the negative electrode lead paste As the base, the activated carbon loaded with lead oxide accounts for 0.1% to 10% of the base, the subnano graphite accounts for 0.1% to 3% of the base, and the conductive carbon black accounts for 0.1% to 5% of the base. Other parameters are the same as in the first embodiment.

[0024] In this embodiment, the high-performance supercapacitor material expanded mesophase carbon microspheres suitable for sulfuric acid electrolyte are mixed into the negative electrode paste of the lead-acid super battery, as well as activated carbon loaded with lead oxide, sub-nanometer graphite and conductive carbon black, At the same time, the supercapacitor material is effecti...

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the preparation method of the expanded mesophase carbon microspheres is as follows: 1. Place the container in an ice bath, then add concentrated sulfuric acid to the container, and then Add mesophase carbon microspheres and sodium nitrate into concentrated sulfuric acid, stir for 15-30 minutes, then add potassium permanganate, stir for 10 minutes, then place the container at 30-40°C for 1-5 hours to obtain viscous Thick liquid, wherein the ratio of the volume of concentrated sulfuric acid to the mass of mesophase carbon microspheres is 20-40mL: 1g, the mass ratio of sodium nitrate to mesophase carbon microspheres is 0.3-0.6:1, potassium permanganate and mesophase carbon microspheres are The mass ratio of the balls is 1.5-4:1; 2. Add the viscous liquid in step 2 into distilled water, stir at room temperature for 1-2 hours, then add hydrogen peroxide, stir at room t...

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Abstract

The invention discloses a negative plate of a lead acid super battery, a production method and a lead acid super battery assembled by the negative plate, solving the problem of short service life of the charge state of a magnifying power part of the traditional lead acid super battery. The negative plate comprises a negative plate grid and negative lead plaster, wherein capacitance carbon plasteris coated on the surface of the negative lead plaster, and expansion intermediate phase carbon microballoons are added to the negative lead plaster; and the capacitance carbon plaster comprises activated carbon loading lead oxide, stearic acid, acetylene black, and the like. In the invention, the negative plate is formed by the method that the materials of the negative lead plaster are coated onto the negative plate and after cured and formatted, the capacitance carbon plaster is coated onto the outer surface and cured; and a super capacitive negative plate is obtained by doping high-capacitance and high-conductivity expansion intermediate phase carbon microballoons into the negative lead plaster to match with active substances in the capacitance carbon plaster. The service life of the assembled lead acid super battery is prolonged by 3-5 times compared with that of the traditional lead acid super battery, and the power is improved by 5 times, thus the lead acid super battery can be applied to medium and low hybrid electric vehicles and low-configuration pure electric vehicles.

Description

technical field [0001] The invention relates to a negative plate of a lead-acid battery, a preparation method thereof and a lead-acid super battery assembled therefrom. Background technique [0002] With the dwindling of oil resources and the increasingly serious pollution of urban air caused by automobile exhaust, countries around the world are vigorously developing new energy vehicles to solve this global problem. my country has also listed electric vehicles as a strategic emerging industry for key development. . At present, the bottleneck in the development of electric vehicles is the power battery, which is reflected in the safety, price, life, specific energy, specific power and fast charging of the battery. Lithium-ion batteries have high specific energy and cycle life, but poor safety, especially the high price, which is difficult for the mass market to accept recently; Ni-MH batteries have high specific power and good safety, but the price is also high, and Due to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14H01M4/62H01M4/16H01M10/06
CPCY02T10/7016Y02E60/126Y02E60/10
Inventor 王殿龙朱俊生王林郎笑石任安福胡新春
Owner HARBIN INST OF TECH
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