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High-performance sodium vanadyl phosphate symmetrical sodium-ion battery material and preparation method and application thereof

A sodium ion battery, sodium vanadium phosphate technology, applied in the fields of nanomaterials and electrochemistry, can solve problems such as price increases, and achieve the effects of high specific capacity, good cycle stability, good cycle and rate performance

Active Publication Date: 2014-05-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as lithium-ion batteries enter quantitative production, the large demand for lithium metal will definitely lead to a sharp increase in its price in the near future

Method used

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  • High-performance sodium vanadyl phosphate symmetrical sodium-ion battery material and preparation method and application thereof
  • High-performance sodium vanadyl phosphate symmetrical sodium-ion battery material and preparation method and application thereof
  • High-performance sodium vanadyl phosphate symmetrical sodium-ion battery material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The sintering method to prepare positive and negative electrode materials for sodium vanadium phosphate sodium ion batteries with different shapes includes the following steps:

[0040] 1) The ammonium metavanadate (NH 4 VO 3 ), phosphoric acid (H 3 PO 4 ), sodium carbonate (Na 2 CO 3 ) The molar ratio is: 2:3:1.5.

[0041] 2) First measure 10ml of deionized water and put it in a 100ml beaker, weigh 2mmol of ammonium metavanadate into the beaker and stir for 20-30 minutes until the mixed solution is evenly mixed;

[0042] 3) Then measure 3 mmol of phosphoric acid and slowly drop it into the mixed solution that was stirred evenly in step 2), the mixed solution turns from white to brown, after dropping completely, continue to stir for 30 minutes;

[0043] 4) Next, weigh 1.5 mmol of sodium carbonate and slowly add it to the brown mixed solution in step 3), and continue to stir for 20 minutes;

[0044] 5) Finally, in order to prepare sodium vanadium phosphate with di...

Embodiment 2

[0055] The sintering method to prepare positive and negative electrode materials for sodium vanadium phosphate sodium ion batteries with different shapes includes the following steps:

[0056] 1) The ammonium metavanadate (NH 4 VO 3 ), phosphoric acid (H 3 PO 4 ), sodium carbonate (Na 2 CO 3 ) The molar ratio is: 2:3:1.5.

[0057] 2) First measure 10ml of deionized water and put it in a 100ml beaker, weigh 2mmol of ammonium metavanadate into the beaker and stir for 20-30 minutes until the mixed solution is evenly mixed;

[0058] 3) Then measure 3 mmol of phosphoric acid and slowly drop it into the mixed solution that was stirred evenly in step 2), the mixed solution turns from white to brown, after dropping completely, continue to stir for 30 minutes;

[0059] 4) Next, weigh 1.5 mmol of sodium carbonate and slowly add it to the brown mixed solution in step 3), and continue to stir for 20 minutes;

[0060] 5) Finally, in order to prepare sodium vanadium phosphate with di...

Embodiment 3

[0066] The sintering method to prepare positive and negative electrode materials for sodium vanadium phosphate sodium ion batteries with different shapes includes the following steps:

[0067] 1) The ammonium metavanadate (NH 4 VO 3 ), phosphoric acid (H 3 PO 4 ), sodium carbonate (Na 2 CO 3 ) The molar ratio is: 2:3:1.5.

[0068] 2) First measure 10ml of deionized water and put it in a 100ml beaker, weigh 2mmol of ammonium metavanadate into the beaker and stir for 20-30 minutes until the mixed solution is evenly mixed;

[0069] 3) Then measure 3 mmol of phosphoric acid and slowly drop it into the mixed solution that was stirred evenly in step 2), the mixed solution turns from white to brown, after dropping completely, continue to stir for 30 minutes;

[0070] 4) Next, weigh 1.5 mmol of sodium carbonate and slowly add it to the brown mixed solution in step 3), and continue to stir for 20 minutes;

[0071] 5) Finally, in order to prepare sodium vanadium phosphate with di...

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Abstract

The invention relates to a sodium vanadyl phosphate symmetrical sodium-ion battery material of which the morpholog is granular, tubular and lamellar, the sodium vanadyl phosphate nano particle size is 60-90nm, the sodium vanadyl phosphate nanotube is 20-30nm in diameter and is wound together in a curled manner, the sodium vanadyl phosphate nanosheet is 150-200nm in thickness and 5-6mum in length and width. The sodium vanadyl phosphate symmetrical sodium-ion battery material can be applied as the active material of the sodium-ion battery. The sodium vanadyl phosphate symmetrical sodium-ion battery material has excellent multiplying power, high specific capacity and good circulating stability when being used as the active material of the sodium-ion battery, and the whole battery has good circulating and multiplying power performances when the sodium vanadyl phosphate nano particles are used as the cathode and the anode of the battery; the process is simple, economical and practical.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemistry, and in particular relates to a high-performance sodium vanadium phosphate symmetric sodium ion battery material with different shapes and a preparation method thereof, which can be used as the positive electrode material and the negative electrode material of the sodium ion battery. Background technique [0002] With the increasing demand for energy, finding new energy storage systems to overcome traditional fuel storage has become a challenge today. Rechargeable lithium batteries have been the focus of much research due to their low price, long cycle life, high energy density, and favorable reversibility characteristics. There is no doubt that the large-scale implementation of renewable energy development requires low-cost and efficient energy storage systems. However, as lithium-ion batteries enter quantitative production, there will be a large demand for metallic li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58
CPCC01B25/30H01M4/5825H01M10/36Y02E60/10
Inventor 麦立强李硕董轶凡徐林何亮
Owner WUHAN UNIV OF TECH
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