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Preparation method of lead-carbon battery negative electrode plate

A lead-carbon battery and negative electrode technology, applied in the field of negative electrode additives and electrodes, can solve problems such as complex synthesis conditions, achieve broad application prospects, improve effective utilization, and prolong cycle life.

Active Publication Date: 2018-01-12
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

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Problems solved by technology

However, the synthesis conditions of these patents are relatively complex, and the composition is a binary system

Method used

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  • Preparation method of lead-carbon battery negative electrode plate
  • Preparation method of lead-carbon battery negative electrode plate
  • Preparation method of lead-carbon battery negative electrode plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The specific surface area is 2000m 2 / g of 3g activated carbon placed in 1M lead sulfate, 0.1M sulfuric acid, 0.1M nano-SiO 2 , 0.05M sodium tripolyphosphate 100mL mixed solution, the counter electrode is a platinum electrode. The deposition current density is 20mA / cm -2 , the deposition time is 1 h, and the deposition temperature is 33° C. to obtain a silicon-containing negative electrode additive.

[0035] Mix 10g of Pb-C-SiO in 100g of lead powder, 1g of humic acid, 1g of short fiber, 1g of barium sulfate, 1g of sodium lignosulfonate, and 1g of acetylene black 2 Complex. Add 8g of water and 1mL / s 10g of 4.7mol / L sulfuric acid slowly to the mixed active substance and stir evenly to form a lead paste. The lead paste is coated on the lead alloy grid, dried and solidified to prepare the negative electrode plate of the lead carbon battery. The drying and curing steps are:

[0036] 1) 50°C, air humidity 98%, constant temperature for 24h

[0037] 2) 55℃, air humidity...

Embodiment 2

[0041] The specific surface area is 2000m 2 / g of 3g activated carbon placed in 1M lead sulfate, 0.11M sulfuric acid, 0.1M nano-SiO 2 , 0.05M sodium tripolyphosphate 100mL mixed solution, the counter electrode is a platinum electrode. The deposition current density is 20mA / cm -2 , the deposition time was 1 h, and the deposition temperature was 33° C. to obtain a silicon-containing negative electrode additive.

[0042] Mix 10g of Pb-C-SiO in 100g of lead powder, 1g of humic acid, 1g of short fiber, 1g of barium sulfate, 1g of sodium lignosulfonate, and 1g of acetylene black 2 Complex. Add 8g of water and 1mL / s 10g of 4.7mol / L sulfuric acid slowly to the mixed active substance and stir evenly to form a lead paste. The lead paste is coated on the lead alloy grid, dried and solidified to prepare the negative electrode plate of the lead carbon battery. The drying and curing steps are:

[0043] 1) 50°C, air humidity 98%, constant temperature for 24h

[0044] 2) 55℃, air humid...

Embodiment 3

[0048] The specific surface area is 2000m 2 / g of 3g activated carbon placed in 1M lead sulfate, 0.12M sulfuric acid, 0.1M nano-SiO 2 , 0.05M sodium tripolyphosphate 100mL mixed solution, the counter electrode is a platinum electrode. The deposition current density is 20mA / cm -2 , the deposition time was 1 h, and the deposition temperature was 33° C. to obtain a silicon-containing negative electrode additive.

[0049] Mix 10g of Pb-C-SiO in 100g of lead powder, 1g of humic acid, 1g of short fiber, 1g of barium sulfate, 1g of sodium lignosulfonate, and 1g of acetylene black 2 Complex. Add 8g of water and 1mL / s 10g of 4.7mol / L sulfuric acid slowly to the mixed active substance and stir evenly to form a lead paste. The lead paste is coated on the lead alloy grid, dried and solidified to prepare the negative electrode plate of the lead carbon battery. The drying and curing steps are:

[0050] 1) 50°C, air humidity 98%, constant temperature for 24h

[0051] 2) 55℃, air humidi...

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Abstract

The invention discloses a lead-carbon battery negative electrode additive and an electrode plate preparation method thereof. The additive is a Pb-C-SiO2 compound which is prepared with constant current electrodeposition; and an electrode plate is composed of lead powder, Pb-C-SiO2, humic acid, short fibers, barium sulfate, sodium lignosulphonate and acetylene black. Different from the traditionallead-carbon compound additive, for the lead-carbon battery negative electrode additive, on the past basis, silicon dioxide nanoparticles are added; and nanometer silicon dioxide can store an electrolyte, and the solution stored by the nanometer silicon dioxide can provide more sulfate ions for a carbon material with high reactive sites along with electrochemical circulation of a negative electrode, so that the conversion rate of lead sulfate is accelerated, and the adaptive capacity of the electrode at high current density is improved. The electrode plate which is composed by the compound provided by the invention, the effective utilization ratio of the active substances can be effectively increased, the negative electrode sulfation phenomenon under high-rate partial-state-of-charge is relieved, and the cycle life of the battery is prolonged.

Description

Technical field: [0001] The invention relates to a lead-carbon battery, in particular to a negative 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): H01M4/16H01M4/21H01M4/36
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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