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Method for preparing lead-carbon battery cathode composite material

A composite material, lead-carbon battery technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of battery operation interruption, affecting the conductivity of negative electrode active materials, increasing interface ohmic resistance, etc.

Inactive Publication Date: 2017-02-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Claims
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Problems solved by technology

However, in such a preparation process, there is an incompatibility between the interface between the active material and the carbon material in the lead paste mixture system, and this incompatibility will increase the ohmic resistance of the interface, resulting in When running for a long time, the battery work may be interrupted, which will eventually affect the conductivity of the negative active material (NAM)

Method used

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  • Method for preparing lead-carbon battery cathode composite material
  • Method for preparing lead-carbon battery cathode composite material
  • Method for preparing lead-carbon battery cathode composite material

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Embodiment Construction

[0017] The specific steps are:

[0018] 1. A method for preparing lead-carbon battery negative electrode composite material, characterized in that the specific steps are:

[0019] (1) Take 2 grams of chitosan, soak it in 2% acetic acid solution for 1 hour, then take it out and dry it in an oven at 85° C. for 5 hours, take it out and cool it, and then grind it into powder.

[0020] (2) weigh the chitosan processed in PbO, step (1) in the ratio of 76% by the mass ratio of the sum of PbO and PbO and chitosan, fully grind and mix, prepare sample, put into crucible, place Put it into a muffle furnace, heat under nitrogen protection, heat up to 800°C at a heating rate of 5°C / min, keep it warm for 2 hours, and cool naturally to room temperature to obtain chitosan in situ synthetic carbon material.

[0021] (3) the chitosan in situ synthetic carbon material obtained in step (2) is mixed with the negative electrode active material, and the negative electrode active material is made of...

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Abstract

The invention discloses a method of an in-situ-synthesized carbon material which can be used as a lead-carbon battery cathode composite material. The raw materials comprise chitosan, conductive agent acetylene black, binder PTFR emulsion, expanding agent barium sulfate, hydrogen evolution inhibitor indium oxide and gallium oxide, anode active material lead oxide, lead powder and the like. Through the method of in-situ synthesis, the lead-carbon battery cathode composite material is prepared. The adoption of the in-situ-synthesized carbon material effectively improves compatibility of the carbon material and an active material interface, constructs an ideal conductive network, improves use ratio of the an active material and high dispersibility of the biomass carbon material, and inhibits generation of irreversible PbSO4.

Description

technical field [0001] The invention relates to a method for preparing negative electrode composite materials of lead-carbon batteries. Background technique [0002] Using non-renewable natural fossil energy as a power source, automobiles have become one of the main causes of urban smog and air pollution. Vigorously developing new energy vehicles such as electric vehicles has become the best way to solve this problem. As a new type of battery developed on the basis of lead-acid batteries, lead-carbon batteries have the high energy density of lead-acid batteries and the high power density of supercapacitors, which are equivalent to a mixture of the two, and can be widely used in applications that require rapid energy Recycling, long-term undercharging and other fields where conventional batteries cannot be used. At the same time, the production process of lead-carbon batteries is very close to that of existing lead-acid batteries, and industrialization is relatively easy. W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/583H01M4/62H01M4/20
CPCH01M4/20H01M4/362H01M4/57H01M4/583H01M4/62Y02E60/10
Inventor 刘峥李海莹李庆伟钟寒阳张淑芬
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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