Detection method of carbon-encapsulated material for carbon source

A technology of carbon cladding material and detection method, applied in the direction of material analysis using measurement of secondary emissions, preparation of test samples, etc., can solve problems such as defective products and process fluctuations

Active Publication Date: 2015-12-09
ZHONGTIAN EMERGING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the material manufacturers do not have an effective method to determine the material properties, resulting in process fluctuations and defective products in the production process

Method used

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  • Detection method of carbon-encapsulated material for carbon source
  • Detection method of carbon-encapsulated material for carbon source
  • Detection method of carbon-encapsulated material for carbon source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for detecting the carbon source of a carbon-coated material, the detection is completed through the following steps, and the specific steps are as follows:

[0018] (1) Put the carbon-coated material and pure water in a beaker, and then place the beaker on a heating furnace to heat until it boils. The entire boiling process lasts for 4 minutes, and the mass ratio of the carbon-coated material to pure water is 1:10, the mass of carbon-coated material is 4g, and the mass of pure water is 40g;

[0019] (2) Seal the beaker with samples obtained in step (1) with clean aluminum foil, place it in an environment free from chemical pollution, and cool it down to 20-25°C. The samples in the beaker are divided into upper, middle and lower parts. layer;

[0020] (3) The sample obtained in step (2) is layered, and the uppermost floating substance is stuck on a clean aluminum foil with aluminum foil, and the aluminum foil is placed in a vacuum drying oven to dry for 2 hours...

Embodiment 2

[0024] A method for detecting the carbon source of a carbon-coated material, the detection is completed through the following steps, and the specific steps are as follows:

[0025] (1) Put the carbon-coated material and pure water in a beaker, and then place the beaker on a heating furnace to heat until it boils. The entire boiling process lasts for 5 minutes, and the mass ratio of the carbon-coated material to pure water is 1:10, the mass of carbon-coated material is 6g, and the mass of pure water is 60g;

[0026] (2) Seal the beaker with samples obtained in step (1) with clean aluminum foil, place it in an environment free from chemical pollution, and cool it down to 20-25°C. The samples in the beaker are divided into upper, middle and lower parts. layer;

[0027] (3) The sample obtained in step (2) is layered, and the uppermost floating substance is stuck on a clean aluminum foil with aluminum foil, and the aluminum foil is placed in a vacuum drying oven to dry for 2 hours...

Embodiment 3

[0031] A method for detecting the carbon source of a carbon-coated material, the detection is completed through the following steps, and the specific steps are as follows:

[0032] (1) Put the carbon-coated material and pure water in a beaker, and then place the beaker on a heating furnace to heat until boiling. The duration of the entire boiling process is 4.5 minutes. The mass ratio of the carbon-coated material to pure water is The ratio is 1:10, the mass of carbon-coated material is 5g, and the mass of pure water is 50g;

[0033] (2) Seal the sample obtained in step (1) with clean aluminum foil, place it in an environment free from chemical pollution, and cool it to 20-25°C. The sample in the beaker is divided into upper, middle and lower layers;

[0034] (3) For the beaker with the sample obtained in step (2), use aluminum foil to stick the floating substance on the top layer to the clean aluminum foil, and place the aluminum foil in a vacuum drying oven to dry for 2 hour...

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Abstract

The invention discloses a detection method of a carbon-encapsulated material for a carbon source. The detection method is characterized in that detection is accomplished through the following steps. The detection method has the advantages that carbon source materials of low densities in the carbon-encapsulated material and sample materials are effectively separated, meanwhile carbon sources not reacted in the material are simply and effectively found out by virtue of a scanning electron microscope, and an effective basis is provided for the performance judgment of the carbon-encapsulated material.

Description

technical field [0001] The invention relates to the technical field of material detection, in particular to a method for detecting carbon sources of carbon-coated materials. Background technique [0002] As a green new energy technology, lithium-ion battery has very important and broad application prospects. Among them, lithium iron phosphate has become a very promising positive electrode material for power batteries due to its abundant sources, low price, high specific capacity and excellent high-temperature cycle performance. However, lithium iron phosphate itself has the problem of low ion conductivity and electronic conductivity. Most manufacturers of lithium iron phosphate materials use carbon coating to improve the conductivity of lithium iron phosphate. The uniformity and consistency of carbon coating have a great influence on the performance of the material, such as small tap density and small gram capacity. Most of the material manufacturers do not have an effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/22G01N1/44
Inventor 郑媛媛靳承铀薛驰缪永华
Owner ZHONGTIAN EMERGING MATERIALS CO LTD
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