Method for manufacturing lead-carbon ultracapacitor battery cathode

A battery negative electrode and supercapacitor technology, which is applied in the direction of electrode manufacturing, circuits, electrical components, etc., can solve the problems of difficult energy storage systems such as wide application, poor high current acceptance capacity, narrow operating temperature range, etc., to achieve wide application prospects and improve Effect of discharge capacity and material cost reduction

Active Publication Date: 2010-03-10
SHUANGDENG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, in the field of energy storage systems such as solar energy and wind energy, lead-acid battery technology is currently the main technology. This technology has defects such as short life (about 300-500 times), narrow operating temperature range, and poor high-current acceptance capacity. Therefore, New supercapacitor battery technology needs to be developed to meet energy storage requirements in this field
[0004] Existing inorganic supercapacitors mainly include carbon-carbon symmetric type and nickel electrode-carbon hybrid alkaline system. Although their lifespan is longer, the price is more than 10 times that of lead-acid batteries of the same type, and the working potential window is only 1.5V. , the specific energy is only about 5wh / kg, it is difficult to be widely used in energy storage systems

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  • Method for manufacturing lead-carbon ultracapacitor battery cathode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 20Kg of lead powder, 0.08Kg of short fibers, 0.5Kg of conductive carbon black, 0.28Kg of sodium lignosulfonate, and 0.4Kg of barium sulfate were uniformly dry-mixed, and then wet-mixed by adding deionized water with a raw material weight ratio of 8 to 10Kg. Then add 2Kg density of 1.4g / cm 3 sulfuric acid solution; these lead pastes are then double-coated on a 0.5 mm thick lead strip substrate near the lug area (see figure 1 ), curing and drying at 60°C to 70°C.

[0021] Then dry mix 70Kg activated carbon and 1.6Kg conductive carbon black evenly, add 1.5KgCMC, 3.5Kg LA132 dissolved in aqueous solution, and then apply the mixed paste on both sides outside the 0.5mm thick lead tape matrix lead paste area, and drying at a temperature of 50-80°C, the negative electrode of lead-carbon supercapacitor battery can be made.

[0022] The prepared lead-carbon supercapacitor battery negative electrode is coated with AGM separator U-shaped, and pure lead is used as the substrate to...

Embodiment 2

[0025] 30Kg of lead powder, 0.1Kg of short fibers, 0.55Kg of conductive carbon black, 0.3Kg of sodium lignosulfonate, and 0.5Kg of barium sulfate were uniformly dry-mixed, and then wet-mixed by adding deionized water with a raw material weight ratio of 10 to 12Kg. Then add 2.5Kg density of 1.4g / cm 3 sulfuric acid solution; these lead pastes are then double-coated on a 0.5 mm thick lead strip substrate near the lug area (see figure 1 ), curing and drying at 60°C to 70°C.

[0026] Then dry mix 60Kg activated carbon and 1.2Kg conductive carbon black evenly, add 1.2KgCMC and 3Kg PTFE dissolved in aqueous solution, and then apply the mixed paste on both sides of the 0.5mm thick lead tape matrix outside the lead paste , and dried at a temperature of 50-80°C, the negative electrode of the lead-carbon supercapacitor battery can be made.

[0027] The prepared lead-carbon supercapacitor battery negative electrode is coated with AGM separator U-shaped, and pure lead is used as the subs...

Embodiment 3

[0030] 40Kg of lead powder, 0.12Kg of short fibers, 0.6Kg of conductive carbon black, 0.3Kg of sodium lignosulfonate, and 0.5Kg of barium sulfate were uniformly dry-mixed, and then wet-mixed by adding deionized water with a raw material weight ratio of 10 to 12Kg. Then add 3.2Kg density of 1.4g / cm 3 sulfuric acid solution; these lead pastes are then double-coated on a 0.5 mm thick lead strip substrate near the lug area (see figure 1 ), curing and drying at 60°C to 70°C.

[0031] Then dry mix 50Kg of activated carbon and 1.0Kg of conductive carbon black evenly, add an aqueous solution dissolved in 1.0Kg of CMC and 2.5Kg of PTFE, and then apply the mixed paste on both sides of the 0.5mm thick lead tape matrix lead paste area, and drying at a temperature of 50-80°C, the negative electrode of lead-carbon supercapacitor battery can be made.

[0032] The prepared lead-carbon supercapacitor battery negative electrode is coated with AGM separator U-shaped, and pure lead is used as the...

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Abstract

The invention discloses a method for manufacturing a lead-carbon ultracapacitor battery cathode, comprising the following steps: active substances taking lead powder as a main component and active substances taking active carbon as a main component are respectively coated on different areas of an electrode matrix, and then are dried to obtain the lead-carbon ultracapacitor battery cathode. The invention provides a manufacturing technology of lead-carbon ultracapacitor battery cathode, which takes a pure lead sheet or lead alloy sheet as a matrix, and adopts the active carbon and the lead powder as active substances. Compared with the cathode taking the pure active carbon as cathode active substance, the cathode piece manufactured by the method can greatly improve discharge capacity of thelead-carbon ultracapacitor batteries, the specific energy can reach more than 16wh/kg, the cycle life can reach more than 1500 times, working potential window can reach 2.0V, and the cost is only onethird to one fifth of that of the current inorganic system carbon-carbon symmetric form and nickel electrode-carbon mixed alkaline system.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor batteries, and in particular relates to a method for preparing a negative electrode of a supercapacitor battery. Background technique [0002] A supercapacitor battery (SupercapacitorBattery) is an energy storage device between a supercapacitor and a battery. It not only has the characteristics of fast charging and discharging of capacitors, but also has the energy storage mechanism of electrochemical batteries. Ultracapacitor batteries have a strong ability to store charges, and have the characteristics of fast charging and discharging speed, high efficiency, no pollution to the environment, long cycle life, wide operating temperature range, and high safety. Because of its high specific power, large capacitance and long cycle life, it has become a new type of energy storage device, which has important and broad applications in the fields of mobile communication, information technology, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M16/00
CPCY02E60/12Y02E60/10
Inventor 佘沛亮凌付冬
Owner SHUANGDENG GRP
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