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Preparation method of prussian blue type energy storage material

An energy storage material, the technology of Prussian blue, which is applied in the field of preparation of Prussian blue energy storage materials, can solve the problems of low yield and achieve the effects of simplifying the production process, shortening the production time and increasing the yield

Active Publication Date: 2018-01-26
浙江钠创新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to overcome the problem of low yield caused by repeated cleaning in the existing Prussian blue materials preparation method, and to provide a preparation method of Prussian blue materials different from the prior art

Method used

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  • Preparation method of prussian blue type energy storage material
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  • Preparation method of prussian blue type energy storage material

Examples

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Embodiment 1

[0033] This embodiment relates to a preparation method of high-yield Prussian blue material sodium ferrocyanide, comprising the following steps:

[0034] (1) Ferrous perchlorate and sodium ferrocyanide are weighed in a mol ratio of 1:1.01, ferrous perchlorate Fe(ClO 4 ) 2 ·6H 2 The mass of O is 3.63g, sodium ferrocyanide Na 4 Fe(CN) 6 10H 2 The quality of O is 4.89g, and the ferrous perchlorate and sodium ferrocyanide that weighed are dissolved in the deionized water of 50ml respectively, are mixed with the ferrous perchlorate solution of 0.2mol / L and the ferrous perchlorate solution of 0.202mol / L Sodium ferrocyanide solution.

[0035](2) Weigh 0.05 mol of sodium perchlorate, dissolve it in 200 ml of deionized water, and prepare a 0.25 mol / L sodium perchlorate solution.

[0036] (3) Heat the three solutions in a temperature-controlled magnetic stirrer water bath, set the temperature at 60°C, and pour the prepared ferrous perchlorate solution and sodium ferrocyanide solut...

Embodiment 2

[0041] This embodiment relates to a preparation method of high-yield Prussian blue material sodium manganese ferrocyanide, comprising the following steps:

[0042] (1) Manganese perchlorate and sodium ferrocyanide are weighed in a mol ratio of 1:1.01, manganese perchlorate Mn(ClO 4 ) 2 ·6H 2 The mass of O is 3.62g, sodium ferrocyanide Na 4 Fe(CN) 6 10H 2 The quality of O is 4.89g, and the manganese perchlorate and sodium ferrocyanide that weighed are dissolved in the deionized water of 50ml respectively, are mixed with the manganese perchlorate solution of 0.2mol / L and the ferrous iron of 0.202mol / L Sodium cyanide solution.

[0043] (2) Weigh 0.025 mol of sodium perchlorate, dissolve it in 200 ml of deionized water, and prepare a 0.125 mol / L sodium perchlorate solution.

[0044] (3) Place the three solutions in a temperature-controlled magnetic stirrer for heating in a water bath, set the temperature to 60°C, and drop the prepared manganese perchlorate solution and sodiu...

Embodiment 3

[0049] This embodiment relates to a preparation method of high-yield Prussian blue material sodium ferrocyanide, comprising the following steps:

[0050] (1) Ferrous perchlorate and sodium ferrocyanide are weighed in a mol ratio of 1:1.01, ferrous perchlorate Fe(ClO 4 ) 2 ·.6H 2 The mass of O is 3.63g, sodium ferrocyanide Na 4 Fe(CN) 6 10H 2 The quality of O is 4.89g, and ferric perchlorate and sodium ferrocyanide that weighed are dissolved in the deionized water of 50ml respectively, are mixed with the ferric perchlorate solution of 0.2mol / L and the ferrous iron of 0.202mol / L Sodium cyanide solution.

[0051] (2) Weigh 0.01 mol of sodium perchlorate, dissolve it in 100 ml of deionized water, and prepare a 0.1 mol / L sodium perchlorate solution.

[0052] (3) Place the three solutions in a temperature-controlled magnetic stirrer water bath, set the temperature to 0°C, and drop the prepared ferrous perchlorate solution and sodium ferrocyanide solution into the high-speed st...

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Abstract

The invention provides a preparation method of a prussian blue type energy storage material, and specifically relates to a preparation method of a prussian blue type sodium-ion battery electrode material with high yield. The preparation method comprises the following steps: S1, dissolving divalent transition metal perchlorate and sodium ferrocyanide into water respectively to obtain a divalent transition metal perchlorate solution and a sodium ferrocyanide solution; S2, dissolving sodium perchlorate into water to obtain a sodium perchlorate solution; and S3, mixing the divalent transition metal perchlorate solution and the sodium ferrocyanide solution with the sodium perchlorate solution to obtain a mixed solution, and stirring and standing the mixed solution to obtain a sediment product;and separating and drying the sediment product to obtain the prussian blue type energy storage material. According to the preparation method, a great deal of loss of the prussian blue type material inthe cleaning process is avoided, and high-yield production can be realized. The preparation method is simple and high in yield, and is easy for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of energy materials, and relates to a simple preparation method of a Prussian blue electrode material applied to a sodium ion battery, in particular to a preparation method of a Prussian blue energy storage material. Background technique [0002] With the continuous expansion of the global demand for large-scale energy storage, the resource-rich and environmentally friendly sodium-ion battery technology has become a research hotspot. The key to the development of sodium-ion batteries is to seek and develop high-capacity electrode materials with fast sodium intercalation and desorption capabilities. The general formula of Prussian blue material is A x P[R(CN) 6 ] (P, R are transition metal elements, A is an alkali metal element), has a three-dimensional cubic frame structure, and the cubic space in the frame is relatively large (>0.5nm), and can be embedded with alkali metal ions or other types of metal ...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M10/054C01C3/12
CPCY02E60/10
Inventor 廖小珍马紫峰刘尔帅杨暘唐婉
Owner 浙江钠创新能源有限公司
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