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Method for preparing cathode of external applied lead-carbon battery

A lead-carbon battery and negative electrode technology, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of ignoring the interaction between carbon and electrolyte, and the connection problem is not well solved, so as to improve the effective utilization rate , small internal resistance, enhanced connectivity

Active Publication Date: 2018-02-27
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, these patents only focus on the physical force and structural design between lead and carbon, ignoring the interaction between carbon and electrolyte, so the connectivity problem is still not well resolved

Method used

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  • Method for preparing cathode of external applied lead-carbon battery
  • Method for preparing cathode of external applied lead-carbon battery
  • Method for preparing cathode of external applied lead-carbon battery

Examples

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Embodiment 1

[0030] The 60wt% specific surface area is 2000m 2 The mixed material of activated carbon, 30wt% polystyrene, and 10wt% acetylene black per gram is placed in first-grade water, heated to 110°C, heated and stirred at a constant temperature for 3 hours, cooled naturally and left to stand in an environment with an air humidity of 50% for 36 hours get carbon paste;

[0031] 90wt% of lead powder, 0.5wt% of humic acid, 3wt% of 40mm polyester staple fiber, 1.5wt% of barium sulfate, 3wt% of sodium lignosulfonate, and 2wt% of acetylene black are evenly mixed to make active substances , the mixed active substance is slowly added to the total weight of 10.0wt% water and 13wt% 2mL / s 4.7mol / L sulfuric acid and stirred evenly to form a lead paste;

[0032] First apply the lead paste to the lead alloy grid, dry and solidify to prepare a green plate, and then apply the carbon paste at 0.3g / cm 2 The loading amount was evenly coated on the surface of the raw electrode plate, and dried for 24 h...

Embodiment 2

[0038] The 60wt% specific surface area is 100m 2 The mixed material of graphite carbon, 30wt% polystyrene, and 10wt% acetylene black per gram is placed in first-grade water, heated to 110°C, heated and stirred at a constant temperature for 3 hours, and left to stand in an environment with an air humidity of 50% for 36 hours after natural cooling After obtaining carbon paste;

[0039] 90wt% lead powder, 2wt% humic acid, 2wt% 40mm polyester staple fiber, 2wt% barium sulfate, 2wt% sodium lignosulfonate, 2wt% acetylene black are mixed uniformly to make active material, mix The final active substance was slowly added to its total weight of 10.0wt% water and 13wt% 2mL / s 4.7mol / L sulfuric acid and stirred evenly to form a lead paste;

[0040] First apply the lead paste to the lead alloy grid, dry and solidify to prepare a green plate, and then apply the carbon paste at 0.3g / cm 2 The loading amount was uniformly coated on the surface of the raw electrode plate, and dried for 24 hour...

Embodiment 3

[0046] The specific surface area of ​​70wt% is 2000m 2 The mixed material of activated carbon, 25wt% polystyrene, and 5wt% acetylene black per gram was placed in first-grade water, heated to 130°C, heated and stirred at a constant temperature for 3 hours, cooled naturally and left to stand in an environment with an air humidity of 50% for 48 hours. get carbon paste;

[0047]90wt% of lead powder, 1.5wt% of humic acid, 1.5wt% of 40mm polyester staple fiber, 2wt% of barium sulfate, 2wt% of sodium lignosulfonate, and 3wt% of acetylene black are evenly mixed to make active substances , the mixed active substance is slowly added to the total weight of 10.0wt% water and 13wt% 2mL / s 4.7mol / L sulfuric acid and stirred evenly to form a lead paste;

[0048] First apply the lead paste to the lead alloy grid, dry and solidify to prepare a green plate, and then apply the carbon paste at 0.3g / cm 2 The loading amount was evenly coated on the surface of the raw electrode plate, and dried for...

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Abstract

The invention discloses a method for preparing the cathode of an external applied lead-carbon battery. The cathode comprises an external applied carbon paste, wherein an electrode plate consists of lead powder, the carbon paste, humic acid, a short fiber, barium sulfate, sodium lignin sulfonate and acetylene black. An additive which can play a physical connection network function in a preparationprocess and can be polymerized in sulfuric acid to generat ester gel is added into the carbon paste, and the whole external applied electrode is wrapped in the gel with ion permeability, so that the physical connection of a carbon phase and a lead phase is enhanced. By adopting the electrode plate comprising the carbon paste, the carbon paste dropping velocity is effectively reduced, the advantages of an external applied electrode structure are sufficiently brought into play, the effective utilization rate of active substances is increased, a cathode sulfation phenomenon at a high magnification part charge state is alleviated, the energy density of the whole battery is improved, and the circulation service life of the battery is prolonged.

Description

Technical field: [0001] The invention relates to a lead-carbon battery, in particular to a negative electrode composition 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 the negative e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/20H01M4/57H01M4/583
CPCH01M4/20H01M4/57H01M4/583Y02E60/10
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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