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Method for preparing nano carbon electrode

A nanocarbon and electrode technology, applied in battery electrodes, nanotechnology, nanotechnology, etc., can solve the problems of increasing the amount of raw materials by agglomeration of carbon nanotubes, difficult to fully disperse carbon nanotubes, and reducing the capacity of composite materials. Effective reaction area, conducive to electrolyte storage, and the effect of improving high-rate performance

Active Publication Date: 2014-04-23
GUIZHOU TELIDA NANO CARBON SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in practical use, this method leads to unstable capacitance due to the change of film thickness
Lithium-ion battery slurry has very high solid content and high viscosity. It is difficult to fully disperse carbon nanotubes by this method
Therefore, the current method of using carbon nanotubes cannot give full play to its advantages. At the same time, due to the serious agglomeration of carbon nanotubes, the amount of raw materials has to be increased, which increases the cost and reduces the capacity of the composite material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) The liquid high molecular weight hydrocarbon precursor C with a volume ratio of 1:1:1 20 h 40 、C 20 h 42 and C 22 h44 Vaporization at 500°C to form a precursor gas;

[0034] 2) Weigh raw materials according to the following components and mass percentage content: catalyst 5g, lithium salt 5g, iron salt 50g and phosphate 30g; Described catalyst is the superfine powder of metal Ni, Y, Zr and MgO, and size is 500nm, its percentage by weight is respectively 85%, 5%, 5% and 10% of the total weight of the catalyst; the lithium salt is a combination of lithium carbonate, lithium hydroxide, lithium nitrate and lithium phosphate, and its percentage by weight is respectively lithium 45%, 25%, 25% and 5% of the total weight of the salt; the iron salt is ferrous oxalate and ferric phosphate, and its weight percentage is respectively 70% and 30% of the total weight of the iron salt; the phosphate It is ammonium dihydrogen phosphate and ammonium phosphate, and its weight perc...

Embodiment 2

[0042] 1) The liquid high molecular weight hydrocarbon precursor C with a volume ratio of 1:1:1 20 h 40 、C 20 h 42 and C 22 h 44 Vaporization at 500°C to form a precursor gas;

[0043] 2) Weigh raw materials according to the following components and mass percentage content: catalyst 5g, lithium salt 10g, iron salt 55g and phosphate 40g; Described catalyst is the superfine powder of metal Ni, Y, Zr and MgO, and size is 500nm, its percentage by weight is respectively 85%, 5%, 5% and 10% of the total weight of the catalyst; the lithium salt is a combination of lithium carbonate, lithium hydroxide, lithium nitrate and lithium phosphate, and its percentage by weight is respectively lithium 45%, 25%, 25% and 5% of the total weight of the salt; the iron salt is ferrous oxalate and ferric phosphate, and its weight percentage is respectively 70% and 30% of the total weight of the iron salt; the phosphate It is ammonium dihydrogen phosphate and ammonium phosphate, and its weight p...

Embodiment 3

[0051] 1) The liquid high molecular weight hydrocarbon precursor C with a volume ratio of 1:1:1 20 h 40 、C 20 h 42 and C 22 h 44 Vaporization at 500°C to form a precursor gas;

[0052] 2) Weigh raw materials according to the following components and mass percentage content: catalyst 10g, lithium salt 5g, iron salt 50g and phosphate 35g; Described catalyst is the superfine powder of metal Ni, Y, Zr and MgO, and size is 500nm, its percentage by weight is respectively 85%, 5%, 5% and 10% of the total weight of the catalyst; the lithium salt is a combination of lithium carbonate, lithium hydroxide, lithium nitrate and lithium phosphate, and its percentage by weight is respectively lithium 45%, 25%, 25% and 5% of the total weight of the salt; the iron salt is ferrous oxalate and ferric phosphate, and its weight percentage is respectively 70% and 30% of the total weight of the iron salt; the phosphate It is ammonium dihydrogen phosphate and ammonium phosphate, and its weight p...

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Abstract

A method for preparing a nano carbon electrode comprises the following steps: 1) forming a precursor gas; 2) weighing raw materials; 3) putting a precursor obtained in the step 2) in a 60-70 DEG C vacuum oven, drying for 10-30 hours, then putting into a tube type vacuum furnace with atmosphere protection, placing on a conductive substrate, then introducing nitrogen gas or argon gas, and next introducing the precursor gas; 4) preparing a dispersion powder from the product obtained in the step 3), carrying out isopyknic immersion of the dispersion powder with a phenolic resin-P123 macromolecule copolymer-ethyl orthosilicate sol, and carrying out full condensation; 5) depositing the product obtained in the step 4 on a thin metal layer; and 6) depositing an electrolyte on the thin metal layer. The method can reduce the cost, and also improves the performance.

Description

technical field [0001] The invention belongs to the field of composite electrodes, and relates to a preparation method of nano-carbon electrodes. Background technique [0002] Fast-charging, high-capacitance energy storage devices such as supercapacitors and lithium (Li)-ion batteries are used in an increasing number of applications, and in each of these applications, the charging time and the capacity of the energy storage device are Important parameters. Furthermore, the size, weight and / or cost of such energy storage devices can be significant limitations. Furthermore, low internal resistance is necessary for efficient performance. The lower the resistance, the less constraints the energy storage device encounters in delivering electrical energy. Accordingly, there is a need in the art for faster-charging, high-capacitance energy storage devices that are smaller, lighter, and more cost-effectively manufactured. There is also a need in the art for components for electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/133H01M4/1393B82Y30/00B82Y40/00
CPCY02E60/122B82Y40/00H01G11/36H01G11/86H01M4/1393H01M4/362H01M4/583H01M4/626Y02E60/10
Inventor 高虹李力
Owner GUIZHOU TELIDA NANO CARBON SCI & TECH
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