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OMC-based composite electrode and lead-acid battery

A composite electrode and lead-acid battery technology, applied in the field of electrochemistry, can solve the problems of few types of negative electrode materials, short cycle life, slow research progress, etc.

Inactive Publication Date: 2019-10-29
ZHAOQING LEOCH BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional lead-acid batteries have disadvantages such as low specific energy and short cycle life, which cannot meet the needs of long-life and high-capacity batteries in modern society. The electrochemical properties of electrode materials have an important impact on the performance of lead-acid batteries. There are few types of anode materials that have the same status as Pb in practical applications, and the research progress is slow

Method used

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  • OMC-based composite electrode and lead-acid battery
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  • OMC-based composite electrode and lead-acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Add 50g of OMC to 2000ml of 10% H 2 o 2 Solution, accompanied by stirring, reacted for 2h, and the reaction temperature was 60°C. After the reaction, the reactants were cooled to room temperature, the supernatant solution was removed, the obtained suspension was centrifuged 3 times, washed and filtered with deionized water repeatedly until neutral, and dried in a drying oven at 60°C to constant weight; A hydrophilic ordered mesoporous carbon is obtained.

[0049] The characterization methods of OMC are as follows: (1) Burier transform infrared spectroscopy (FT-IR, Nicolet6700) to characterize the functional groups of the sample; (2) Laser Raman spectrometer (Raman, DilorLABRAM-1B microscope) to characterize the structural changes of the sample (3) X-ray diffractometer (XRD, PhilipsXPert pro MPD) characterizes the crystal phase composition of sample; (4) Scanning electron microscope (SEM, JSM-7500F) characterizes the surface morphology of sample; (5) Transmission elect...

Embodiment 2

[0079] Weigh 50 g of the hydrophilic OMC prepared in Example 1 and add it into 100 kg of deionized water, and stir for 30 min at a room temperature of 25° C. to obtain a uniform OMC dispersion.

[0080] The OMC dispersion is added into a paste mixer and mixed with 1000kg of lead powder to obtain a mixture. In order to realize the uniform mixing of OMC and lead powder, and to ensure the stability of negative OMC / sponge Pb composite lead paste paste, the binding ability of the plate and lead paste, add bonding agent during the mixing and stirring process of OMC dispersion liquid and lead powder Substance short fiber, its addition amount is 0.015% of the overall mass of the mixture.

[0081] In the mixture of mixed OMC and lead powder, add 100kg of sulfuric acid with a density of 1.325g / ml and stir for 20min, the reaction temperature is controlled at 65°C, and the obtained OMC / sponge Pb composite material lead paste has an apparent density of 4.28g / cm 3 .

[0082] The surface...

Embodiment 3

[0103] Negative plate prepared by machine coating: the apparent density prepared in Example 2 is 4.28g / cm 3 The OMC / sponge Pb composite material lead paste is used to prepare the OMC-based composite negative electrode, or in other words, the OMC-based composite negative electrode is the OMC / sponge Pb composite electrode. Among them, the OMC / sponge Pb composite material lead paste is all coated on the negative grid. The size of the negative grid is: 68mm×44mm×1.7mm, and it is made of lead-calcium-tin alloy with a calcium content of 0.09% and a tin content of 0.3%. . Certainly, the lug portion of the negative electrode grid does not need to be coated. The negative electrode grid coated with the sponge Pb composite material lead paste is continuously cured for 24 hours at 60°C and humidity 85-95%; then continuously dried for 24 hours at 60°C and humidity less than 50% to make the negative electrode The plate is the OMC-based composite negative electrode. After the composite el...

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Abstract

The present invention provides an OMC (Ordered Mesoporous Carbon)-based composite electrode and a lead-acid battery. The OMC-based composite electrode comprises a negative plate grid and lead plasterof an OMC / sponge Pb composite structure material, wherein the lead plaster of the OMC / sponge Pb composite structure material coats the negative plate grid, and the OMC-based composite negative electrode is prepared after solidification and drying. The OMC-based composite negative electrode is prepared by coating lead plaster of the OMC / sponge Pb composite structure material on the negative plate grid for curing and drying. The OMC-based composite electrode and the lead-acid battery are favorable for improving the specific capacity and the service life of the lead-acid battery. The technology of the traditional lead-acid battery negative electrode and the technology of the super capacitor are fused, so that the energy advantage of the battery characteristic is achieved, and the instant power high-capacity charging characteristic of the double electric layer capacitor is achieved, so that the specific capacity and the service life of the traditional lead-acid battery are improved.

Description

technical field [0001] The application relates to the field of electrochemical technology, in particular to an OMC-based composite electrode and a lead-acid battery. Background technique [0002] With the advantages of low cost and mature technology, traditional lead-acid batteries have been successfully used in communications, electric vehicles and other systems. They are an energy storage battery that conforms to my country's industrial layout and manufacturing level. However, traditional lead-acid batteries have disadvantages such as low specific energy and short cycle life, which cannot meet the needs of long-life and high-capacity batteries in modern society. The electrochemical properties of electrode materials have an important impact on the performance of lead-acid batteries. There are very few types of anode materials that have the same status as Pb in practical applications, and the research progress is slow. Contents of the invention [0003] Based on this, it ...

Claims

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Application Information

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IPC IPC(8): H01M4/14H01M4/57H01M4/62H01M10/06
CPCH01M4/14H01M4/57H01M4/625H01M10/06H01M2004/027Y02E60/10
Inventor 高士元
Owner ZHAOQING LEOCH BATTERY TECH
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