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A kind of lead-carbon battery positive grid and preparation method thereof, and lead-carbon battery

A lead-carbon battery, positive plate technology, applied in the direction of electrode carrier/current collector, etc., can solve problems such as environmental and personal hazards, achieve the effect of improving cycle life, avoiding softening and falling off, and low price

Active Publication Date: 2022-03-18
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cadmium and arsenic are added to the grid alloy in the prior art to reduce corrosion performance, cadmium and arsenic are harmful to the environment and the human body, and should be strictly used

Method used

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  • A kind of lead-carbon battery positive grid and preparation method thereof, and lead-carbon battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Lead-carbon battery positive grid:

[0028] Ultrasonic cleaning of PbCa matrix with acetone and surface roughening by sandblasting. The mixed material was sprayed under a nitrogen atmosphere with a pressure of 2.0MPa and 200°C to obtain a lead-carbon battery positive electrode grid coated with a 100 μm thick titanium oxide film on the surface.

[0029] Among them, the mixed material includes 40vol.% of PbCa alloy particles with a particle size of 100-130μm and 60vol.% of Ti with a particle size of 30-50μm n o 2n-1 powder, the Ti n o 2n-1 The powder includes 70%, 10%, and 10% Ti by mass percentage respectively 4 o 7 、Ti 5 o 9 and Ti 6 o 11 and 10% of other titanium oxide compounds.

Embodiment 2

[0030] Example 2 Lead-carbon battery positive grid

[0031] The acetone ultrasonic cleaning and sandblasting surface roughening treatment of the titanium plate substrate. The mixed material was sprayed under a nitrogen atmosphere at a pressure of 1.8 MPa and 250° C. to obtain a lead-carbon battery positive electrode grid coated with a 150 μm thick titanium oxide film on the surface.

[0032] Among them, the mixed material includes 50vol.% PbCaSn alloy particles with a particle size of 120-150 μm and Ti with a particle size of 40-60 μm n o 2n-1 powder, the Ti n o 2n-1 The powder includes 65%, 10%, and 10% Ti by mass percentage respectively 4 o 7 、Ti 5 o 9 and Ti 6 o 11 and 15% of other titanyl compounds.

Embodiment 3

[0033] Example 3 Lead-carbon battery positive grid

[0034] Ultrasonic cleaning of the aluminum substrate with acetone and roughening of the surface by sandblasting. The mixed material was sprayed under a nitrogen atmosphere at a pressure of 0.6 MPa and 150° C. to obtain a lead-carbon battery positive electrode grid coated with a 200 μm thick titanium oxide film on the surface.

[0035] Among them, the mixed material includes 15vol.% of Pb alloy particles with a particle size of 110-120 μm and 75% of Ti with a particle size of 20-40 μm n o 2n-1 powder, the Ti n o 2n-1 The powder includes 80%, 5%, and 10% Ti by mass percentage respectively 4 o 7 、Ti 5 o 9 and Ti 6 o 11 and 5% of other titanium oxide compounds.

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Abstract

The invention provides a positive electrode grid of a lead-carbon battery, the positive electrode grid includes a substrate grid and a titanium suboxide film on the surface of the substrate grid; the titanium oxide of the titanium suboxide film comprises Ti 4 o 7 、Ti 5 o 9 and Ti 6 o 11 . The titanium suboxide film on the surface of the positive grid provided by the present invention has a dense structure, has good binding force with the positive active material, has the characteristics of high conductivity and corrosion resistance, improves the corrosion resistance of the positive grid, and strengthens the grid. The ability to combine with the active material reduces the interface resistance, avoids the softening and falling off of the positive electrode material during the cycle, and improves the cycle life of the battery.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a corrosion-resistant and high-conductivity positive electrode grid of a lead-carbon battery. Background technique [0002] Lead-carbon battery is a new type of composite battery composed of lead-acid battery and super capacitor, which can effectively inhibit the sulfation of the negative plate than traditional lead-acid batteries. It can not only prolong its life by 3-5 times, but also improve The power density is 20%-50%, and it can also be manufactured on the production line of lead-acid batteries to achieve large-scale production, and has broad application prospects in the fields of large-scale energy storage and electric vehicles. However, with the continuous improvement of the performance of the negative electrode, the positive electrode of the battery has become a bottleneck that limits the life of the lead-carbon battery, especially the corrosion of the positive electrode gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/73
CPCH01M4/73Y02E60/10
Inventor 胡晨金翼王绥军穆居易孙召琴黎可尹秀娟林亚洲高飞刘超群刘家亮
Owner CHINA ELECTRIC POWER RES INST