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Preparation of lead titanate nano-spheres and application of lead titanate nano-spheres to sodium ion battery

A sodium-ion battery and nanosphere technology, applied in the directions of titanate, secondary battery, battery electrode, etc., can solve the problem of not preparing lead titanate, and achieve excellent rate performance, high specific capacity, and low energy consumption. Effect

Inactive Publication Date: 2017-05-31
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is no preparation of lead titanate PbTi 0.8 o 2.6 Related patent reports on nanospheres

Method used

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  • Preparation of lead titanate nano-spheres and application of lead titanate nano-spheres to sodium ion battery
  • Preparation of lead titanate nano-spheres and application of lead titanate nano-spheres to sodium ion battery
  • Preparation of lead titanate nano-spheres and application of lead titanate nano-spheres to sodium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of lead titanate PbTi 0.8 o 2.6 The preparation method of nanosphere, concrete steps are as follows:

[0020] Add 1.36 milliliters of n-butyl titanate to 8 milliliters of ethanol, then add 8 milliliters of water, stir and hydrolyze for 3 minutes, then add 1.12 grams of potassium hydroxide, 0.05 grams of poly Vinyl alcohol, 1.72 grams of lead nitrate, finally add 22 milliliters of water therein, stir at normal temperature for 1 hour, move in the reaction kettle of 50 milliliters, place in the baking oven of 120 degree, react for 2 hours, after the gained product is washed once, Then wash once with 10% acetic acid solution, and finally wash twice with water, and dry to obtain amorphous lead titanate nanospheres.

[0021] The prepared lead titanate PbTi 0.8 o 2.6 Nanospheres are used in sodium-ion batteries, and the specific steps are as follows:

[0022] Firstly, the raw materials are weighed. According to the mass ratio, amorphous lead titanate nanospheres: p...

Embodiment 2

[0025] A kind of lead titanate PbTi 0.8 o 2.6 The preparation method of nanosphere, concrete steps are as follows:

[0026] Add 1.36 milliliters of n-butyl titanate to 8 milliliters of ethanol, then add 8 milliliters of water, stir and hydrolyze for 3 minutes, then add 1.12 grams of potassium hydroxide, 0.05 grams of poly Vinyl alcohol, 1.72 grams of lead nitrate, finally add 22 milliliters of water therein, stir at normal temperature for 1 hour, move in the reaction kettle of 50 milliliters, place in the baking oven of 120 degree, react for 4 hours, after the gained product is washed once, Then wash once with 10% acetic acid solution, and finally wash twice with water, and dry to get PbTi 0.8 o 2.6 nanospheres.

[0027] The prepared PbTi 0.8 o 2.6 Nanospheres are used in sodium-ion batteries, and the specific steps are as follows:

[0028] First weigh the raw materials, by mass ratio, PbTi 0.8 o 2.6 Nanosphere: polyvinylidene fluoride: acetylene black = 60:30:10;

...

Embodiment 3

[0031] A kind of lead titanate PbTi 0.8 o 2.6 The preparation method of nanosphere, concrete steps are as follows:

[0032] Add 1.36 milliliters of n-butyl titanate to 8 milliliters of ethanol, then add 8 milliliters of water, stir and hydrolyze for 3 minutes, then add 1.12 grams of potassium hydroxide, 0.05 grams of poly Vinyl alcohol, 1.72 grams of lead nitrate, finally add 22 milliliters of water therein, stir at normal temperature for 1 hour, move in the reaction kettle of 50 milliliters, place in the baking oven of 120 degree, react for 6 hours, after the gained product is washed with water once, Then wash once with 10% acetic acid solution, and finally wash twice with water, and dry to get PbTi 0.8 o 2.6 nanospheres.

[0033] The prepared PbTi 0.8 o 2.6 Nanospheres are used in sodium-ion batteries, and the specific steps are as follows:

[0034] First weigh the raw materials, by mass ratio, PbTi 0.8 o 2.6 Nanosphere: polyvinylidene fluoride: acetylene black = 60...

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Abstract

The invention relates to the technical field of sodium ion batteries and in particular relates to preparation of lead titanate nano-spheres and application of the lead titanate nano-spheres to the sodium ion battery. The preparation of the lead titanate nano-spheres comprises the specific steps: adding 1ml to 1.36ml of tetrabutyl titanate into 8ml of ethanol; adding 8ml of water and stirring and hydrolyzing for 3min; sequentially adding 1.12g of potassium hydroxide, 0.05g of polyvinyl alcohol and 1.72g of lead nitrate in a continuous stirring process; finally, adding 22ml of water and stirring for 1h at room temperature; transferring a mixture into a 50ml reaction kettle; putting the reaction kettle into a drying oven at 120 DEG C and reacting for 2h to 10h; washing an obtained product with water for one time and washing with a 10 percent acetic acid solution for one time; finally, washing with water for two times and drying to obtain the lead titanate nano-spheres. A sodium battery prepared by taking the lead titanate nano-spheres as a negative electrode of the sodium battery has very high specific capacity and good rate performance.

Description

technical field [0001] The invention relates to the technical field of sodium ion batteries, in particular to the preparation of lead titanate nanospheres and its application in sodium ion batteries. Background technique [0002] Sodium-ion batteries work on a similar principle to lithium-ion batteries. Compared with lithium-ion batteries, it has its unique advantages. First, the raw materials are abundant and easy to obtain, which can reduce the production cost. Second, it has better safety performance than lithium-ion batteries. However, due to its large ionic radius, the resistance to intercalation and extraction of sodium ions is increased, resulting in poor charge-discharge reversibility and low capacity of electrode materials, which limit the further practical application of sodium-ion batteries. It has always been the research focus of scientists to obtain anode materials for sodium-ion batteries with good cycle performance, high specific capacity, and high-curre...

Claims

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Application Information

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IPC IPC(8): C01G23/00H01M4/48H01M10/054
CPCC01G23/003C01P2002/72C01P2004/03C01P2004/32C01P2004/62H01M4/48H01M10/054Y02E60/10
Inventor 魏明灯冯文静
Owner FUZHOU UNIV
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