Electrode material for lithium battery and preparation method thereof

An electrode material, lithium battery technology, applied in battery electrodes, secondary batteries, circuits, etc., to meet the needs of use and the effect of a wide range of raw materials

Inactive Publication Date: 2018-10-12
肇庆益晟商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Lithium iron phosphate is a positive electrode material for lithium batteries. It has moderate working voltage (3.2V), large capacitance (170mAh / g), high discharge power, fast charging, and long cycle life (capacity retention rate after 150 cycles is 75%), high stability in high temperature and high heat environment, but with the improvement of people's use demand, the electric capacity and cycle life of lithium iron phosphate can no longer meet people's use demand, people are urgently required to improve its electric capacity and cycle life

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  • Electrode material for lithium battery and preparation method thereof

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Effect test

Embodiment 1

[0021] An electrode material for a lithium battery, comprising the following raw materials in parts by weight: 8 parts of graphite, 2.6 parts of sodium phosphate, 4 parts of ferrous sulfate, 5 parts of lithium phosphate, 1.5 parts of nano-titanium dioxide, 10 parts of silicon carbide micropowder, 6 parts of tetrahydrofuran 14 parts of rose essential oil and 8 parts of absolute ethanol. The particle size of nano-titanium dioxide is 38nm, the particle size of silicon carbide micropowder is 40um, and the graphite adopts flake graphite.

[0022] The preparation method of the electrode material for the lithium battery, the specific steps are as follows:

[0023] Step 1, adding graphite, sodium phosphate, ferrous sulfate and lithium phosphate to rose essential oil, adjusting the pH value to 5.6 and stirring into a slurry under vacuum to obtain the first mixture;

[0024] Step 2, adding nano-titanium dioxide into tetrahydrofuran and ultrasonically vibrating at 46 degrees Celsius for...

Embodiment 2

[0030] An electrode material for a lithium battery, comprising the following raw materials in parts by weight: 10 parts of graphite, 3.5 parts of sodium phosphate, 4.8 parts of ferrous sulfate, 6.4 parts of lithium phosphate, 2.2 parts of nano titanium dioxide, 13 parts of silicon carbide micropowder, 7.5 parts of tetrahydrofuran 19 parts of rose essential oil and 10 parts of absolute ethanol. The preparation method of the rose essential oil is that the rose is extracted through japonica rice and glutinous rice fermentation broth, and compound enzyme is added, and then centrifuged and concentrated by rotary steaming.

[0031] The preparation method of the electrode material for the lithium battery, the specific steps are as follows:

[0032] Step 1, adding graphite, sodium phosphate, ferrous sulfate and lithium phosphate to rose essential oil, adjusting the pH value to 5.8 and stirring into a slurry under vacuum to obtain the first mixture;

[0033] Step 2, adding nano-titani...

Embodiment 3

[0039] An electrode material for a lithium battery, comprising the following raw materials in parts by weight: 12 parts of graphite, 4 parts of sodium phosphate, 5.6 parts of ferrous sulfate, 7.5 parts of lithium phosphate, 2.6 parts of nano-titanium dioxide, 15 parts of silicon carbide micropowder, and 9 parts of tetrahydrofuran 24 parts of rose essential oil and 11 parts of absolute ethanol. The particle size of nano-titanium dioxide is 50nm, the particle size of silicon carbide micropowder is 50um, and the graphite adopts spherical graphite.

[0040] The preparation method of the electrode material for the lithium battery, the specific steps are as follows:

[0041] Step 1, adding graphite, sodium phosphate, ferrous sulfate and lithium phosphate to rose essential oil, adjusting the pH value to 6.2 and stirring into a slurry under vacuum to obtain the first mixture;

[0042] Step 2, adding nano-titanium dioxide into tetrahydrofuran and ultrasonically oscillating at 50 degre...

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Abstract

The invention discloses an electrode material for a lithium battery and a preparation method thereof. The electrode material for the lithium battery comprises the following raw materials by weight: 8-13 parts of graphite, 2.6-4.4 parts of sodium phosphate, 4-6 parts of ferrous sulfate, 5-8 parts of lithium phosphate, 1.5-3 parts of nano titanium dioxide, 10-16 parts of silicon carbide micro-powder, 6-10 parts of tetrahydrofuran, 14-26 parts of rose essential oil and 8-12 parts of absolute ethanol. The product is wide in raw material source; through the synergistic action of various raw materials, the prepared finished product used as the positive electrode material of the battery has better specific capacity and cycle life than the existing products, which can meet the use requirement of people.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to an electrode material for lithium batteries. Background technique [0002] Due to the continuous consumption of fossil fuels, mainly oil and coal, and the increasing environmental pollution, such as the current smog weather and automobile exhaust have become the number one killer of human health, which have seriously affected human health and the living environment. More and more people are turning their attention to new energy technologies. The development of new energy has become the focus of energy strategies in many countries. Lithium batteries are one of the important directions. Lithium batteries are becoming one of the most potential power sources due to their excellent performance. . [0003] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Compared with tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M10/0525H01M4/583H01M4/62H01M4/58H01M4/60
CPCH01M4/364H01M4/5825H01M4/583H01M4/602H01M4/625H01M10/0525Y02E60/10
Inventor 曾文飞
Owner 肇庆益晟商贸有限公司
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