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Electrode active material for lead-acid storage battery

A technology for electrode active materials and lead-acid batteries, applied in lead-acid batteries, battery electrodes, circuits, etc., can solve problems such as active material utilization, charging efficiency, large current discharge capacity is not ideal, quality products are rare, and preparation conditions are harsh.

Inactive Publication Date: 2017-06-20
杨春晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, by adding some common conductive agents, dispersants, expansion agents, etc. to the active material, 30%-60% utilization of positive and negative active materials and better charging efficiency can be obtained, and it can also make sulfate , softening and shedding of positive active material, and early capacity loss have been more or less controlled or alleviated, but there are still considerable room for improvement and problems, such as active material utilization, charging efficiency, large current discharge capacity, and softening of positive active material The control of falling off is not ideal enough. The carbon-based conductive agent is easily consumed by oxidation in the positive electrode, and has a low hydrogen evolution overpotential in the negative electrode. The titanium oxide additive TiO 2 Poor conductivity, and better conductivity of titanium oxide (Ti 4 o 7 ) The preparation conditions are extremely harsh, resulting in rare quality products, etc.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0045] The active material of the lead-acid battery electrode of this embodiment is made of PbO powder, TiO 2 / Al (coating layer / core) coated composite material particles are mixed and prepared. The specific formula is shown in Table 1:

[0046] Table 1 The formulation of the active material of the lead-acid battery electrode of Example 1

[0047] Component Relative mass ratio The average particle size PbO powder1 500nm TiO 2 / Al particles

2％ 500nm

[0048] TiO in formula 2 Including but not limited to martensitic type.

[0049] Preparation method: Weigh 1 part by mass of PbO lead powder and 2% by mass of TiO 2 / Al-coated composite material particles are poured into a stirring container, stirred for 10 minutes, and mixed evenly to obtain a dry powder state of the lead-acid battery electrode active material.

[0050] Applying the active material to the positive electrode of a lead-acid battery can increase the active material utilization rate of the positive electrode of the lead-...

Embodiment 2

[0052] The active material of the lead-acid battery electrode in this embodiment is made of ball-milled lead powder, TiB 2 / Ti (coating layer / core) coated composite material particles are mixed and prepared. The specific formula is shown in Table 2:

[0053] Table 2 The formulation of the active material of the lead-acid battery electrode of Example 2

[0054] Component Relative mass ratio The average particle size Ball milled lead powder1 5μm TiB 2 / Ti particles

12％ 5μm

[0055] Preparation method: weigh 1 part by mass of ball-milled lead powder and 12% by mass of TiB 2 / Ti-coated composite material particles are poured into a stirring container, and the dry powder is stirred for 15 minutes. After mixing uniformly, a dry powder state of the lead-acid battery active material is obtained.

[0056] Applying this active material to the positive electrode of a lead-acid battery can increase the active material utilization rate of the positive electrode of the lead-acid battery by 23...

Embodiment 3

[0058] The active material of the lead-acid battery electrode of this embodiment is made of Batun lead powder, Ti 3 N 4 / Ti / Al (coating layer / single-layer intermediate layer / core) coated composite material powder is mixed and prepared, wherein the thickness of the coating layer is 10μm and the thickness of the intermediate layer is 100nm. The specific formula is shown in Table 3:

[0059] Table 3 The formulation of the active material of the lead-acid battery electrode of Example 3

[0060]

[0061]

[0062] Preparation method: Weigh 1 part by mass of Batun lead powder and 5% by mass of Ti 3 N 4 The / Ti / Al coated composite material powder is poured into a mixing container, and the dry powder is stirred for 15 minutes. After mixing uniformly, a dry powder state of the lead-acid battery active material is obtained.

[0063] Applying this active material to the negative electrode of a lead-acid battery can increase the active material utilization rate of the negative electrode of the lea...

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Abstract

The invention discloses an electrode active material for a lead-acid storage battery. The electrode active material comprises lead powder and composite material granules; the lead powder comprises one or more kinds of metal lead powder, ball-milling lead powder, Barton lead powder, Pb<2>O powder, PbO powder, Pb<2>O<3> powder, Pb<3>O<4> powder and PbO<2> powder; and the composite material granules comprise one or more kinds of coating type composite material granules and mixed type composite material granules. By virtue of the electrode active material for the lead-acid storage battery with an improved formula, the specific power, specific energy, active material utilization rate, charging-discharging efficiency, cycle life, low-temperature performance and the like of the applied lead-acid storage battery can be obviously improved.

Description

Technical field [0001] The present invention relates to the field of lead-acid batteries, in particular to the electrode active materials of lead-acid batteries. Background technique [0002] The active material of lead-acid battery is closely related to the performance of lead-acid battery, which affects or even determines the specific power, specific energy, high-current discharge capacity, charging efficiency, cycle life and so on of lead-acid battery. The preparation and application of the active materials of the current lead-acid batteries have enabled the lead-acid batteries to obtain relatively practical and better performance. Generally, by adding some common conductive agents, dispersants, expansion agents, etc. to the active materials, 30%-60% of the positive and negative active materials utilization rate and better charging efficiency can be obtained, and it can also be sulfated , The softening and shedding of the positive electrode active material, and the early capa...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/57H01M4/62H01M10/06
CPCH01M4/366H01M4/57H01M4/625H01M4/628H01M10/06Y02E60/10
Inventor 杨春晓
Owner 杨春晓
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