Lead-carbon super battery anode material and preparation method thereof

A technology of super battery and negative electrode material, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of increasing the overall cost of the battery, difficult industrialization process, adverse battery performance, etc. Small, the effect of preventing carburization

Inactive Publication Date: 2017-06-16
江苏强劲新能源科技有限公司
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  • Application Information

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Problems solved by technology

However, a small amount of hydrogen evolution inhibitor is difficult to mix evenly with lead paste through simple mechanical stirring, and adding a large amount of inhibitor increases the content of impurity elements in the negative electrode, which is not conducive to improving battery performance, and also does not fundamentally solve the problem of hydrogen evolution in the negative electrode.
[0005] The material prepared by the above method is only used as an additive for the negative plate. On the one hand, the effect is limited. On the other hand, adding additives on the existing basis will increase the overall cost of the battery and bring many difficulties to the industrialization process.

Method used

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  • Lead-carbon super battery anode material and preparation method thereof
  • Lead-carbon super battery anode material and preparation method thereof

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preparation example Construction

[0048] The present invention also provides a preparation method for the anode material of the above-mentioned lead-carbon super battery, comprising the following specific steps:

[0049] 1) Material preparation: Dissolve graphite oxide in water to prepare a graphite oxide solution of 0.5-10 mg / ml (preferably 0.5-3 mg / ml); dissolve soluble lead salt in deionized water to prepare a concentration of 0.01-2 mol / l lead salt solution; soluble lead salt is one or more of nitrate, acetate, carbonate, hydrochloride, sulfate and complex salts containing lead elements;

[0050] 2) Mixed material: ultrasonically treat the graphite oxide solution to disperse it into a uniform graphene oxide colloidal solution, then add the above-mentioned lead salt solution to it, oscillate ultrasonically for 5-30 minutes, and pour it into a high-pressure reactor;

[0051] 3) Hydrothermal reaction: Fix the high-pressure reactor and place it in a constant temperature explosion-proof box. The temperature of ...

Embodiment 1

[0058] Prepare an aqueous solution of lead acetate with a concentration of 0.1M, and add a graphite oxide solution with a concentration of 2ml / mg. The volume ratio of lead acetate aqueous solution to graphene oxide solution is 90:10, heated in water for 25-30 hours, dried under nitrogen at 80°C, and heat-treated in an inert atmosphere in an atmosphere furnace to obtain a lead / carbon composite material.

Embodiment 2

[0060] Prepare an aqueous solution of lead nitrate with a concentration of 0.1M, and add a graphite oxide solution with a concentration of 2ml / mg. The volume ratio of lead acetate aqueous solution to graphene oxide solution is 90:10, heated in water for 25-30 hours, dried under nitrogen at 80°C, and heat-treated in an inert atmosphere in an atmosphere furnace to obtain a lead / carbon composite material.

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Abstract

The invention provides a lead-carbon super battery anode material which is a graphene/Pb nano composite material. The lead-carbon super battery anode material is prepared by mixing a lead salt solution with a graphite oxide solution, carrying out hydrothermal reaction, and then carrying out macro body freeze drying and burning. The lead-carbon super battery anode material is prepared from 91 to 99.5 percent of lead and 0.5 to 9 percent of graphene. The lead salt solution is prepared by dissolving soluble lead salt into deionized water; the soluble lead salt is one or several of lead-containing nitrate, acetate, carbonate, hydrochloride, sulfate and complex salt. The invention further provides a preparation method of the lead-carbon super battery anode material. The preparation method provided by the invention has the advantages of high efficiency, environmental friendliness, high uniformity and the like; the prepared lead-carbon super battery anode material is high in uniformity, high in stability and wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of super batteries, in particular to a lead-carbon super battery negative electrode material and a preparation method thereof. Background technique [0002] Lead-acid batteries, as a secondary battery with a history of more than 150 years, are widely used in start-stop, energy storage, communication, lighting, automobiles, low-speed electric vehicles, etc. due to their mature technology, low cost, and good safety. field. From 2005 to 2009, the average growth rate of China's lead-acid battery industry reached 30%. China is currently the world's largest producer of lead-acid batteries and the largest consumer of lead-acid batteries. [0003] Under the high-rate partial charge state cycle of traditional lead-acid batteries, a lead sulfate crystal layer will be formed on the surface of the negative plate, that is, sulfation, resulting in a decrease in the utilization rate of active materials and a decrease in c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/62
CPCH01M4/364H01M4/62H01M4/625H01M4/628Y02E60/10
Inventor 王自强
Owner 江苏强劲新能源科技有限公司
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