Prussian blue-like derivative and preparation method and application thereof

A Prussian blue-like and Prussian blue-like technology, which is applied in the field of Prussian blue-like derivatives and their preparation, can solve problems such as the inability to effectively improve the electrochemical performance of materials, and achieve the effect of good electrochemical performance.

Inactive Publication Date: 2020-04-17
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods cannot effectively im...

Method used

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  • Prussian blue-like derivative and preparation method and application thereof
  • Prussian blue-like derivative and preparation method and application thereof
  • Prussian blue-like derivative and preparation method and application thereof

Examples

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Embodiment 1

[0070] This embodiment provides a Na 1.77 Mn[Fe(CN) 6 ] 0.97 1.73H 2 The preparation method of O, described preparation method comprises the steps:

[0071] 0.97mol of Na 4 Fe(CN) 6 10H 2 O and 1mol of MnSO 4 ·H 2 O mixing, ball milling, the ball milling speed is 1000r / min, the time of ball milling is 0.5h, the ball-to-material ratio of ball milling is 0.5:1, then the ball milling thing obtained is added with water and stirred to control the liquid-solid ratio to be 15mL / g, after stirring The mixed solution was filtered under reduced pressure to obtain the filter residue, then washed three times with deionized water and then dried in vacuum at 80°C for 16h to obtain the Na 1.77 Mn[Fe(CN) 6 ] 0.97 1.73H 2 O.

[0072] figure 1 It is the scanning electron micrograph of the class Prussian blue derivative obtained in embodiment 1, from figure 1 It can be seen that the morphology of the obtained product is an aggregate composed of nano-cubic particles, and the size of ...

Embodiment 2

[0077] This embodiment provides a Na 1.93 Mn[Fe(CN) 6 ] 1.07 1.37H 2 The preparation method of O, described preparation method comprises the steps:

[0078] 1.07mol of Na 4 Fe(CN) 6 10H 2 O and 1mol of MnSO 4 Mixing, ball milling, the ball milling speed is 1000r / min, the time of ball milling is 0.5h, the ball-to-material ratio for ball milling is 0.5, then add water to the obtained ball mill and stir to control the liquid-solid ratio to 10mL / g, and the stirred mixed solution vacuum filtration under reduced pressure to obtain the filter residue, then washed three times with deionized water and dried in vacuum at 90°C for 12h to obtain the Na 1.93 Mn[Fe(CN) 6 ] 1.07 1.37H 2 O.

[0079] Figure 6 It is the scanning electron micrograph of the class Prussian blue derivative obtained in embodiment 2, from Figure 6 It can be seen that the morphology of the obtained product is an aggregate composed of nano-cubic particles, and the size of the nano-particles is 100-200nm. ...

Embodiment 3

[0083] This embodiment provides a Na 1.77 Mn[Fe(CN) 6 ] 0.97 1.73H 2 The preparation method of O, described preparation method comprises the steps:

[0084] 0.97mol of Na 4 Fe(CN) 6 10H 2 O and 1mol of MnSO 4 ·H 2 O mixing, ball milling, the ball milling speed is 2000r / min, the time of ball milling is 0.5h, the ball-to-material ratio of ball milling is 0.1, then the ball milling thing obtained is added with water and stirred to control the liquid-solid ratio to be 10mL / g, and the mixed The liquid was filtered under reduced pressure to obtain the filter residue, then washed three times with deionized water and then dried in vacuum at 60°C for 30h to obtain the Na 1.77 Mn[Fe(CN) 6 ] 0.97 1.73H 2 O.

[0085] Scanning electron microscopy and XRD tests of this example show that the Prussian blue-like derivative obtained is the same as the Prussian blue-like derivative obtained in Example 1.

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Abstract

The invention provides a prussian blue-like derivative and a preparation method and application thereof. The chemical formula of the prussian blue-like derivative is NaxM1 [Fe (CN) 6] y.nH2O, x is greater than or equal to 0 and less than or equal to 2, y is greater than or equal to 0 and less than or equal to 1, n is 0.1-2, and M1 is a transition metal element. The water content in the product isgreatly reduced in the forming process of the phase due to no large amount of water source and water environment by regulating and controlling the water content in the material and combining a ball milling method so that the sodium content is increased; then by-products of the reaction are removed by adopting a water washing mode; the phase of the prussian blue-like material is formed in the ballmilling process, the water washing process has no obvious influence on the water content and the sodium content of the prussian blue-like derivative, and the phase of the prussian blue-like material is formed in the ball milling process, and thus the water washing process has no obvious influence on the water content and the sodium content of the prussian blue-like derivative.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and relates to a Prussian blue-like derivative and a preparation method and application thereof. Background technique [0002] In recent years, with the gradual development and application of lithium-ion batteries from portable electronic devices to high-power electric vehicles, large-scale energy storage power stations and smart grids, the demand for lithium-ion batteries is increasing, but limited lithium resources limit the use of lithium-ion batteries. of sustainable development. And sodium reserves are abundant, and sodium-ion batteries will be an important supplement to lithium-ion batteries in large-scale energy storage applications. Sodium and lithium are in the same main group and have similar chemical properties, so it is feasible to construct a sodium-ion battery that works similarly to a lithium-ion battery. [0003] Cathode materials often play a decisive role in the cost and perfor...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M10/054
CPCH01M4/58H01M10/054H01M2004/028Y02E60/10
Inventor 赵君梅贺顺利刘会洲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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