Electrolyte containing nano carbon tube

A technology of carbon nanotubes and electrolyte, which is applied in the field of electrolyte, can solve the problems of reducing the speed of ion movement, affecting the conductivity of batteries, and affecting the conductivity of electrolyte, so as to promote the speed of movement, improve the efficiency of electrochemical reactions and Conductive performance, the effect of improving service life

Inactive Publication Date: 2008-03-05
明鑫科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although the patent mentioned in the abstract that it can provide the effect of charging and discharging with a large current, there is no data to prove that the activator does have this effect
Chinese Patent Publication No. CN1697236 discloses an electrolyte with nano-carbon used in valve-regulated sealed lead-acid batteries, which contains phosphoric acid and nano-carbon materials, wherein phosphoric acid accounts for 0.5-0.9 weight percent of the electrolyte, and nano-carbon materials account for electrolytic 1-7% of the weight percentage of the liquid; the electrolyte can increase the discharge capacity and service life of the battery, but the case did not mention carbon nanotubes
[0010] The composition materials and the concentration of the electrolyte of the traditional battery will affect the performance of the battery itself, and the traditional electrolyte is very easy to form a sulfuric acid concentration gradient, and the generation of the sulfuric acid concentration gradient will make the sulfuric acid in the electrolyte unevenly distributed, and will Reduce the speed of ion movement in the electrolyte, so it will directly affect the conductivity of the electrolyte itself, and even affect the conductivity of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-26

[0071] Take the above-mentioned sulfuric acid solution with a density of 1.33g / ml, add carbon nanotubes and silica powder according to the formula listed in Table 1, and stir them thoroughly for 24 hours with a mixer, and mix them evenly, to prepare examples 1 to 26 Of electrolyte. Each electrolyte is added to the test battery, and the battery type used in automobiles and motorcycles is 12V4Ah. The test results are shown in Table 1.

[0072] Table 1. Performance of electrolytes with various carbon nanotubes and silica concentrations in non-colloidal batteries

[0073]

serial number

Carbon nanotubes

weight ratio

Carbon nanotubes

Kind

Silica weight

Quantity ratio

0.4A discharge

, Hours

40A discharge

,second

Impact test

(Number of cycles)

Simulated life

Life

Comparative example 1

No sodium in electrolyte

M carbon tube

No

No

10

150

30

Qual...

Embodiment 27-50

[0080] Example 27-50 Preparation of Electrolyte Concentrate Containing Carbon Nanotubes

[0081] Because the dispersion and mixing of carbon nanotubes requires a long time of stirring and mixing, for practical application considerations, a higher concentration can be used to prepare an electrolyte concentrate containing carbon nanotubes, and the carbon nanotubes and sulfuric acid can be mixed to make a good dispersion. The suspended concentrated solution is diluted and added with silica to achieve an effective use of low-concentration carbon nanotube electrolyte, which can save the time of stirring and mixing and reduce the economic benefits of carbon nanotube electrolyte storage and transportation volume.

[0082] Take the above-mentioned sulfuric acid solution with a density of 1.33g / ml, and add 5 weight percent and 15 weight percent of carbon nanotubes respectively. The weight percent is calculated based on the weight of the sulfuric acid solution as 100%. Stir thoroughly for 2...

Embodiment 51-74

[0097] Take the above-mentioned sulfuric acid solution with a density of 1.33g / ml, add the carbon nanotubes according to the formula listed in Table 3, and mix it thoroughly with a mixer for 24 hours, then add silica to achieve the required silica concentration, mix Evenly, leave the electrolyte to form a gel, that is, the colloidal electrolytes of Examples 51 to 74 have been prepared. Each electrolyte was added to the test battery, and the battery type used in automobiles and motorcycles was 12V4Ah. The test results are shown in Table 3.

[0098] Table 3. Performance of electrolytes with various carbon nanotubes and silica concentrations in colloidal batteries

[0099] serial number

Carbon nanotube weight

Than

Carbon nanotubes

Kind

Silica

weight ratio

0.4A discharge,

Hour

40A discharge

,second

Impact test

(Number of cycles)

Simulated life

Life

Comparative example 1

No sodium in electrolyte

M carbon tube

N...

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Abstract

This invention relates to an electrolyte containing nm carbon tubes, in which, carbon nm tubes of a preset weight percentage are added in a sulfuric solution, the weight percentage of which is 16-70, and that of the carbon nm tubes is 0.001-0.1 taking weight of the sulfuric solution as 100% here, in addition to that, SiO2 in a preset weight percentage can be added in the electrolyte as an additive material and content of nm carbon tube in the electrolyte can be adjusted to form an additive of electrolyte, which can be diluted to become an electrolyte filled in a lead-acid battery after the carbon nm tubes in it reach to a preset concentration.

Description

Technical field [0001] The present invention relates to an electrolyte for lead-acid batteries, in particular to an electrolyte containing carbon nanotubes and a sulfuric acid solution, which can be filled in a lead-acid battery as the electrolyte of the lead-acid battery. Background technique [0002] Batteries are mostly composed of cathode and anode electrodes, electrolytes and outer shells. Among them, the cathode is used to obtain higher performance, and the anode is used to increase the surface area for reaction. The electrolyte is generally also called electrolyte. [0003] After the electrolyte undergoes an oxidation-reduction reaction between the anode and cathode in the battery, electrons are transferred through the external circuit to generate current, and the internally charged ions are transferred between the anode and cathode through the electrolyte. Therefore, the use of a good electrolyte can make the anode and cathode Extreme discharge is more efficient. In the c...

Claims

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Application Information

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IPC IPC(8): H01M10/08
CPCY02E60/126Y02E60/10
Inventor 沈贤杨志申陈思彻
Owner 明鑫科技股份有限公司
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