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Activated carbon composite material and application thereof in lead-carbon battery

A composite material, lead-carbon battery technology, used in lead-acid batteries, lead-acid battery electrodes, battery electrodes, etc., can solve problems such as hydrogen evolution

Active Publication Date: 2022-01-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention solves the serious hydrogen evolution problem after adding carbon materials to the lead-carbon battery by using the hydrogen evolution inhibiting agent

Method used

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  • Activated carbon composite material and application thereof in lead-carbon battery
  • Activated carbon composite material and application thereof in lead-carbon battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1, adopt the following method to prepare monodisperse atomic cluster-activated carbon composite material:

[0035] 1) Prepare liquid A:

[0036] 300mg of indium nitrate and 5ml of 40wt% polysodium methacrylate (PMAA-Na) solution were dissolved in 100ml of water;

[0037] 2) Prepare B slurry:

[0038] Add liquid A dropwise to 10g of activated carbon material while stirring to form B slurry state; the specific surface area of ​​activated carbon is 1800m 2 / g; the surface area of ​​the activated carbon used is about 18000m after testing and calculation 2 ;

[0039] 3) Put the B slurry in an ice-water bath at 0°C while stirring, add 0.5g of sodium borohydride (NaBH 4 ) was dissolved in 100ml of water and added dropwise to the B slurry, the dropping time was controlled to be 10min, and the stirring was continued for 2h after the dropping;

[0040] 4) Drying at 80°C for 12 hours to obtain a monodisperse atomic cluster-activated carbon composite material.

[0041] T...

Embodiment 2

[0044] Lead-carbon battery: according to the requirements of Example 1, without changing other conditions, polysodium methacrylate (PMAA-Na) was replaced by polyethylene glycol dimethacrylate with the same volume and concentration. Get 0.21g of the prepared lead-carbon battery negative active material as the working electrode, 0.36g of the positive active material as the counter electrode, take the commercial mercury-mercurous sulfate reference electrode and carry out the three-electrode system LSV test, the test range is (-1)V to (-1.6)V, the test results are as follows figure 2 . The morphology of the prepared monodisperse atomic cluster-activated carbon composite shows that the size of the atomic cluster is about 1nm.

Embodiment 3

[0046] According to the requirements of Example 1, without changing other conditions, the addition amount of indium nitrate was changed to 600mg. The internal hybrid battery can run 14400 laps under this condition. Compared with the test results of ordinary lead-acid batteries with the same lead element content under the same test conditions (7200 cycles), the life of the internal mixed lead-carbon battery can reach twice the life of the traditional lead-acid battery. The morphology of the prepared monodisperse atomic cluster-activated carbon composite shows that the size of the atomic cluster is about 3nm.

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Abstract

The invention relates to a lead-carbon battery, in particular to an activated carbon composite material, and the material can be prepared by the following method: 1) preparing a solution A: blending soluble salt of a high hydrogen evolution overpotential element and a high-molecular polymer aqueous solution into water to obtain the solution A; 2) preparing a slurry B: dropwise adding the liquid A into a porous activated carbon material, and stirring to form a slurry B state; (3) stirring the slurry B at the temperature of -4 to 4 DEG C, and dropwise adding a strong reducing agent solution into the slurry B; 4) performing drying to obtain the monodisperse atom cluster-porous activated carbon composite material. The problem of serious hydrogen evolution after the carbon material is added into the lead-carbon battery is solved by utilizing the hydrogen evolution inhibiting agent.

Description

technical field [0001] The invention relates to the field of lead-carbon batteries, in particular to the fields of energy storage batteries and start-stop batteries. Background technique [0002] At present, although lead-acid batteries still occupy a major share of the energy storage battery market, with the development and application of various new energy storage batteries, the position of lead-acid batteries in the energy storage market has been shaken. The main reason for lead-acid batteries to gradually lose the market is that other types of energy storage batteries usually have higher energy density or longer service life. In order to meet the opportunities and challenges brought by the market, lead-carbon batteries have emerged as the times require. [0003] Lead-carbon battery is currently the easiest new type of battery to replace lead-acid batteries. Its main features include long cycle life, low cost, and a relatively complete industrial production process. The ...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/583H01M4/20H01M10/06C01B32/354
CPCH01M4/628H01M4/583H01M4/20H01M10/06C01B32/354Y02E60/10
Inventor 席耀宁李先锋阎景旺张华民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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