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Novel graphene negative electrode active material for lead-acid battery and preparation method thereof

A graphene anode, lead-acid battery technology, applied in battery electrodes, circuits, electrical components and other directions, can solve the problems affecting battery cycle life, poor charging acceptance, poor performance, etc., to improve cycle life As well as the effect of high current charge and discharge capacity, improved performance, and enhanced electrical conductivity

Active Publication Date: 2017-05-03
江苏海宝电池科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The research and development of lead-carbon batteries will be a development trend of super batteries in the future, but the lead-acid batteries currently on the market have many shortcomings: such as poor charging acceptance and long charging time; negative electrode sulfation affects battery cycle use life; under extreme conditions such as high and low temperature, poor performance, etc.; therefore, there is an urgent need for a method to solve the above problems

Method used

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  • Novel graphene negative electrode active material for lead-acid battery and preparation method thereof

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Embodiment 1

[0020] A new type of graphene negative electrode active material for lead-acid storage battery, its percentage by weight, colloidal graphite 1%, humic acid 0.8%, lignin 0.8%, barium sulfate 0.9%, polypropylene staple fiber 0.15%, polytetrafluoroethylene 0.12%, 0.09% polyvinyl alcohol; 0.15% 1,2-propanediol, 0.15% nano-powdered graphene, 1% acetylene black, 80% lead powder, 8% 1.4g / ml sulfuric acid, and the rest is high-purity deionized water .

Embodiment 2

[0022] A new type of graphene negative electrode active material for lead-acid storage battery, its percentage by weight, colloidal graphite 1.2%, humic acid 0.5%, lignin 0.3%, barium sulfate 1.2%, polypropylene staple fiber 0.07%, polytetrafluoroethylene 0.15%, 0.03% polyvinyl alcohol; 0.2% 1,2-propanediol, 0.3% nano-powder graphene, 0.8% acetylene black, 85% lead powder, 1.4g / ml sulfuric acid 7%, the rest is high-purity deionized water .

Embodiment 3

[0024] A new type of graphene negative electrode active material for lead-acid storage battery, which comprises 0.5% of colloidal graphite, 0.6% of humic acid, 0.8% of lignin, 0.5% of barium sulfate, 0.2% of polypropylene staple fiber, and polytetrafluoroethylene by weight percentage. 0.05%, 0.2% polyvinyl alcohol; 0.1% 1,2-propanediol, 0.1% nano-powdered graphene, 1.5% acetylene black, 75% lead powder, 1.4g / ml sulfuric acid 10%, the rest is high-purity deionized water .

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Abstract

A novel graphene anode active compound used for lead-acid storage batteries is disclosed. The graphene anode active compound comprises following components by weight: 0.5-1.2% of colloidal graphite, 0.5-0.8% of humic acid, 0.3-0.8% of lignin, 0.5-1.2% of barium sulfate, 0.07-0.2% of staple fiber, 0.05-0.15% of polytetrafluoroethylene, 0.03-0.2% of poly(vinyl alcohol), 0.1-0.2% of 1,2-propanediol, 0.1-0.3% of graphene, 0.8-1.5% of acetylene black, 75-85% of lead powder and 7-10% of a diluted sulfuric acid solution, with the balance being deionized water. The graphene anode active compound enhances conductivity and low-temperature charge-discharge properties of anode plates and delays sulfation tendency of anode active compounds. Under the premise of not influencing the initial stage capacity of batteries, cyclic service lifetime of batteries is prolonged, high-current charge-discharge capability of batteries is improved, and using performance under extreme conditions is improved to a certain degree.

Description

technical field [0001] The invention relates to a novel negative electrode active material for lead-acid batteries using graphene as an additive; the invention also relates to a preparation method of the negative electrode active material. Background technique [0002] The research and development of lead-carbon batteries will be a development trend of super batteries in the future, but the lead-acid batteries currently on the market have many shortcomings: such as poor charging acceptance and long charging time; negative electrode sulfation affects battery cycle use life; under extreme conditions such as high and low temperatures, poor performance, etc.; therefore, a method to solve the above problems is urgently needed. Contents of the invention [0003] The object of the present invention is to provide a novel negative electrode active material using graphene as an additive and a preparation method thereof. [0004] The technical scheme adopted in the present invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/58H01M4/62
CPCH01M4/581H01M4/625Y02E60/10
Inventor 胡华闫智刚杨海涛沈维新
Owner 江苏海宝电池科技有限公司
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