Preparation method of pole plate for positive pole of lead-carbon battery

A lead-carbon battery and electrode technology, applied in lead-acid battery electrodes and other directions, can solve the problem of neglecting the mass transfer and diffusion of the electrode plate, and achieve the effect of improving the charging and discharging acceptance capacity, prolonging the cycle life and improving the corrosion resistance.

Active Publication Date: 2018-01-19
吉林省凯禹电化学储能技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these patents, the main consideration is the connectivity between effective substances, while the influence of mass transfer and diffusion inside the plate is ignored

Method used

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  • Preparation method of pole plate for positive pole of lead-carbon battery
  • Preparation method of pole plate for positive pole of lead-carbon battery
  • Preparation method of pole plate for positive pole of lead-carbon battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Using the constant current deposition method, the flat titanium is placed in 1M lead sulfate, 0.1M sulfuric acid, 0.05M nano-SiO 2 , 0.05M triethylhexyl phosphoric acid mixed solution, the counter electrode is a platinum electrode, and the deposition current density is 10mA / cm 2 , the deposition time is 4h, the deposition temperature is 25℃, and the α / β-PbO 2 -SiO 2 Complex.

[0033] 85wt% lead powder, 10wt% α / β-PbO 2 -SiO 2 Compound, 2.5wt% of colloidal graphite, 2.5wt% of 40mm polyester are mixed evenly to make active substance, and the mixed active substance is slowly added with 12wt% of its total weight of water and 8wt% of sulfuric acid of 2mL / s 4.7mol / L stirring evenly to form a lead paste; coating the prepared lead paste on a lead alloy grid, drying and solidifying to prepare a positive electrode plate of a lead-carbon battery. The curing steps are as follows:

[0034] 1) 55°C, air humidity 98%, constant temperature for 2h

[0035] 2) 60℃, air humidity 95%...

Embodiment 2

[0040] Using the constant current deposition method, the flat titanium is placed in 1M lead sulfate, 0.1M sulfuric acid, 0.05M nano-SiO 2 , 0.05M triethylhexyl phosphoric acid mixed solution, the counter electrode is a platinum electrode, and the deposition current density is 20mA / cm 2 , the deposition time is 4h, the deposition temperature is 25℃, and the α / β-PbO 2 -SiO 2 Complex.

[0041] 85wt% lead powder, 10wt% α / β-PbO 2 -SiO 2 Compound, 2.5wt% of colloidal graphite, 2.5wt% of 40mm polyester are mixed evenly to make active substance, and the mixed active substance is slowly added with 12wt% of its total weight of water and 8wt% of sulfuric acid of 2mL / s 4.7mol / L stirring evenly to form a lead paste; coating the prepared lead paste on a lead alloy grid, drying and solidifying to prepare a positive electrode plate of a lead-carbon battery. The curing steps are as follows:

[0042] 1) 55°C, 98% air humidity, constant temperature for 3 hours

[0043] 2) 60°C, air humidity...

Embodiment 3

[0048] Using the constant current deposition method, the flat titanium is placed in 1M lead sulfate, 0.1M sulfuric acid, 0.05M nano-SiO 2 , 0.05M triethylhexyl phosphoric acid mixed solution, the counter electrode is a platinum electrode, and the deposition current density is 50mA / cm 2 , the deposition time is 4h, the deposition temperature is 30℃, and the α / β-PbO 2 -SiO 2 Complex.

[0049] 85wt% lead powder, 10wt% α / β-PbO 2 -SiO 2 Compound, 2.5wt% of colloidal graphite, 2.5wt% of 40mm polyester are mixed evenly to make active substance, and the mixed active substance is slowly added with 12wt% of its total weight of water and 8wt% of sulfuric acid of 2mL / s 4.7mol / L stirring evenly to form a lead paste; coating the prepared lead paste on a lead alloy grid, drying and solidifying to prepare a positive electrode plate of a lead-carbon battery. The curing steps are as follows:

[0050] 1) 55°C, air humidity 98%, constant temperature for 4h

[0051] 2) 60℃, air humidity 98%...

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Abstract

The invention discloses an additive for a positive pole of a lead-carbon battery, which is highly controllable in component and crystal form and a preparation method of a pole plate for the positive pole of the lead-carbon battery. The additive is an alpha/beta-PbO2-SiO2 compound which is prepared by constant-current electrodeposition; the pole plate is prepared from lead powder, alpha/beta-PbO2-SiO2, colloidal graphite and a short fiber. As an excellent electrolyte storage medium, silicon dioxide has certain elastic deformation ability, after being added into the positive role of the lead-carbon battery, while being capable of providing more effective reactive ions for an internal active substance, is used for providing physical buffer action when the pole plate generates deformation, andis used for relieving the phenomenon that lead plaster falls off due to geometrical bending. However, lead dioxide is used as a basic active substance for the positive pole; the crystal form of the lead dioxide is a decisive factor of influencing the electrochemical property of a material. The pole plate prepared from the compound provided by the invention can be used for obviously improving theeffective utilization ratio of an active substance and the corrosion-resistant ability of the pole plate; the falling-off phenomenon in a high-rate partially charged state is effectively relieved, andthe overall energy density and cycle life of the battery are improved.

Description

Technical field: [0001] The invention relates to a lead-carbon battery, in particular to a positive electrode additive and an electrode 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 t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/16H01M4/21
CPCY02E60/10
Inventor 林海波包金鹏李洪坤
Owner 吉林省凯禹电化学储能技术发展有限公司
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