Preparation method of sodium titanium phosphate material

A technology of sodium titanium phosphate and titanium source, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of high cost and incapable of large-scale production, and achieve low cost, good crystal shape and processing performance, and energy consumption low effect

Pending Publication Date: 2019-01-15
北京金羽新能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current preparation method is mainly hydrothermal method, which can only be prepared on a small scale, and cannot be produced on a large scale in industry, and the cost is relatively high.

Method used

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  • Preparation method of sodium titanium phosphate material
  • Preparation method of sodium titanium phosphate material
  • Preparation method of sodium titanium phosphate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: This sodium titanium phosphate material is prepared by the following process steps.

[0022] Mix sodium dihydrogen phosphate monohydrate, titanium dioxide, and diammonium hydrogen phosphate evenly according to the molar ratio of 1:2:2; use a stirring ball mill to mill at a speed of 500r / min for 2 hours; The heating time was 2 hours at 900°C in air environment, and the heating rate was 5°C / min; further mechanical crushing was carried out to obtain sodium titanium phosphate material.

[0023] From figure 1 It can be seen that the XRD spectrum of the prepared sodium titanium phosphate material can correspond well with the JCPDS card (No.33-1296) of the standard sodium titanium phosphate material, indicating that the prepared sodium titanium phosphate material has a better crystal structure and well maintained The R3c spatial structure was determined, and the modification process did not change the crystal structure of lithium titanate. From figure 2 and ...

Embodiment 2

[0025] The sodium dihydrogen phosphate monohydrate in Example 1 is adjusted to sodium dihydrogen phosphate dihydrate, and the rest are the same as in Example 1, and will not be repeated here.

Embodiment 3

[0027] The sodium dihydrogen phosphate monohydrate in Example 1 is adjusted to sodium dihydrogen phosphate, and the rest are the same as in Example 1, and will not be repeated here.

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Abstract

The invention provides a preparation method of sodium titanium phosphate. The method comprises the following of: mixing a titanium source, a sodium source and a phosphorus source in certain proportionevenly; performing drying; conducting ball milling; heating the mixture obtained by ball milling in certain atmosphere for certain period of time; and conducting crushing to obtain the sodium titanium phosphate material. The sodium titanium phosphate material is a micro-nano material, and has primary particle NTP of 30-800nm and secondary particle NTP of 1-3 micrometers. The sodium titanium phosphate prepared by the method provided by the invention has good crystal shape and excellent processing performance, also the method is simple and the cost is low.

Description

technical field [0001] The invention relates to a sodium titanium phosphate material and a preparation method thereof. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, high energy density, long cycle life, small self-discharge capacity, good environmental compatibility, and light weight, and are widely used in electronic equipment, communication facilities, electric vehicles or hybrid electric vehicles. However, lithium dendrites are easily formed during charging and discharging of lithium-ion batteries, or violently react with the electrolyte during overcharging and over-discharging, causing the battery to explode, which poses a huge safety hazard. Moreover, the lack of global lithium resources and high prices have driven people to look for alternative batteries with lower prices and better safety. [0003] However, sodium-ion batteries have high energy density, do not form dendrites during charging and discharging, and are safe. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/45H01M4/58H01M10/054B82Y40/00
CPCH01M4/5825H01M10/054B82Y40/00C01B25/45C01P2002/72C01P2004/03C01P2004/62C01P2004/61C01P2004/64Y02E60/10
Inventor 黄杜斌李爱军
Owner 北京金羽新能科技有限公司
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