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Lead-acid cell

A lead-acid battery and conductive agent technology, used in lead-acid batteries, battery electrodes, circuits, etc., can solve the problems of poor high-current performance and short cycle life of lead-acid batteries, and achieve enhanced low-temperature startup performance, prolong service life, The effect of inhibiting sulfation

Inactive Publication Date: 2012-10-03
CHERY AUTOMOBILE CO LTD
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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 problems of poor high-current performance and short cycle life of the existing lead-acid batteries, and provide a lead-acid battery that can improve the high-current performance and cycle life of the battery

Method used

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Examples

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Embodiment 1

[0025] This embodiment provides a lead-acid battery, which includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively prepared from positive electrode paste and negative electrode paste.

[0026] 1. Components of positive electrode paste and negative electrode paste

[0027] The positive lead paste contains 0.3wt% of carbon black, 0.1wt% of polyester fiber, 15.9wt% of water, 3.7wt% of sulfuric acid (calculated as sulfuric acid molecules), and the rest of the ingredients are lead powder with an oxidation degree of 78%. Carbon black acts as a conductive agent, while the remaining components in the lead paste are known materials;

[0028] The negative electrode paste contains 5wt% graphene oxide, and the specific surface area of ​​0.5wt% is 100m 2 / g of activated carbon, 0.2wt% zinc oxide, 0.1wt% sodium carboxymethylcellulose (calculated as sodium carboxymethylcellulose molecules), 4wt% sulfuric acid (calculated...

Embodiment 2

[0065] This embodiment provides a lead-acid battery, which includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively prepared from positive electrode paste and negative electrode paste.

[0066] 1. Components of positive electrode paste and negative electrode paste

[0067] The positive electrode paste contains 1wt% reduced graphene oxide, 0.05wt% polyester fiber, 15.5wt% water, 5wt% sulfuric acid (calculated as sulfuric acid molecules), and the rest of the ingredients are lead powder with an oxidation degree of 78%. Reduced graphene oxide is used as the conductive agent, while the remaining components in the lead paste are known materials.

[0068] The negative lead paste contains 1wt% carbon black, and the specific surface area of ​​10wt% is 50m 2 / g of expanded graphite, 5wt% bismuth oxide, 0.5wt% neoprene (calculated as neoprene molecules), 4wt% sulfuric acid (calculated as sulfuric acid molecules), 1wt%...

Embodiment 3

[0085] This embodiment provides a lead-acid battery, which includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively prepared from positive electrode paste and negative electrode paste.

[0086] 1. Components of positive electrode paste and negative electrode paste

[0087] Positive lead paste contains 0.5wt% reduced graphene oxide, 2wt% carbon black, 0.1wt% acetylene black, 0.05wt% polyester fiber, 14.4wt% water, 3.8wt% sulfuric acid (in terms of sulfuric acid molecules ) and the remaining ingredients are lead powder with an oxidation degree of 78%, wherein reduced graphene oxide, carbon black and acetylene black are used as conductive agents, and the remaining components in the lead paste are known materials.

[0088] The negative electrode paste contains 0.1wt% titanium oxide, and the specific surface area of ​​8wt% is 100m 2 / g of natural flake graphite, 1.5wt% bismuth oxide, 0.3wt% zinc oxide, 0.5wt% ne...

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Abstract

The invention provides a lead-acid cell which belongs to the field of lead-acid cells, and can be used for solving the problems of poor large current performance and short cycle life of the existing lead-acid cell. Through adding conductive additive and carbon materials to a negative pole of the lead-acid cell, the lead-acid cell solves the problems of the poor large current performance, the short cycle life and the like of the existing lead-acid cell.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a lead-acid battery. Background technique [0002] Traffic exhaust emissions and the burning of fossil fuels have had an impact on the climate that cannot be underestimated. With the depletion of oil and other resources, human beings are facing two urgent problems of environmental protection and rational use of resources. They attach great importance to and vigorously develop new batteries powered by Energy, moving closer to the era of electric vehicles, the development of zero-emission, pollution-free, and noise-free electric vehicles has broad application prospects. [0003] The core of an electric vehicle is a power source, and lead-acid batteries are currently the most widely used storage batteries. However, due to the limitations of the electrochemical system of the lead-acid battery, the mass density and power density of the battery are relatively low; when used as a pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/06H01M10/42
CPCY02E60/126Y02E60/10
Inventor 胡德言高峰童庆
Owner CHERY AUTOMOBILE CO LTD
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