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Method for synthesizing high-sodium iron-based Prussian blue electrode material

A synthesis method and electrode material technology, applied to battery electrodes, circuits, electrical components, etc., can solve problems such as large-scale energy storage, high cost of lithium-ion batteries, and limited reserves of lithium raw materials, and achieve a simple and reasonable synthesis method. Ease of industrial production and regular appearance

Inactive Publication Date: 2015-01-14
张五星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although lead-acid batteries are low in cost, their raw materials are mainly lead and sulfuric acid, which have many problems such as easy pollution of the environment, short service life, and memory effect; although lithium-ion batteries have high energy density, long service life, and no memory effect, etc. advantages, but lithium raw material reserves are limited, lithium-ion batteries are costly, and in the long run, cannot meet the requirements of large-scale energy storage

Method used

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  • Method for synthesizing high-sodium iron-based Prussian blue electrode material
  • Method for synthesizing high-sodium iron-based Prussian blue electrode material
  • Method for synthesizing high-sodium iron-based Prussian blue electrode material

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Embodiment 1

[0028] Embodiment 1: Taking 100g of the finished product of the electrode material as the meter, the molar percentages of the required raw materials are as follows: 60g of ferrous chloride is selected as the metal salt containing iron ions, and the molar percentage is 26%, and the metal salt containing ferricyanide ions is sodium ferrocyanide 145g, the molar percentage is 26%, the complexing agent selects sodium citrate 160g, and the molar percentage is 48%.

[0029] The synthesis method is as follows:

[0030] Step 1. According to the ratio of raw materials, take iron ion-containing metal salt and complexing agent into a container, add 10L solvent and mix evenly to become solution A for use;

[0031] Step 2, according to the ratio of raw materials, take metal salt containing ferricyanide ion and put it into a container, add 10L solvent and mix evenly to prepare solution B for later use;

[0032] Step 3, put solution A and solution B into a container, and mix and react for 2 ...

Embodiment 2

[0041] Embodiment 2: Taking 200g of the finished product of the electrode material as the meter, the molar percentages of the required raw materials are as follows: 120 g of ferrous chloride is selected as the metal salt containing iron ions, and the molar percentage is 25%, and the metal salt containing ferricyanide ions is sodium ferrocyanide 290g, the molar percentage is 25%, and the complexing agent is 252g of citric acid, and the molar percentage is 50%.

[0042] The synthesis method is as follows:

[0043] Step 1. According to the ratio of raw materials, take iron ion-containing metal salt and complexing agent into a container, add 10L solvent and mix evenly to become solution A for use;

[0044] Step 2, according to the ratio of raw materials, take metal salt containing ferricyanide ion and put it into a container, add 10L solvent and mix evenly to prepare solution B for later use;

[0045] Step 3, put solution A and solution B into a container, and mix and react for 4...

Embodiment 3

[0054] Embodiment 3: Taking 500g of the finished product of the electrode material as the meter, the molar percentages of the required raw materials are as follows: 300g of ferrous chloride is selected as the metal salt containing iron ions, and the molar percentage is 30%, and the metal salt containing ferricyanide ions is sodium ferrocyanide 725g, the molar percentage is 30%, and the complexing agent is 396g of sodium alginate, and the molar percentage is 40%.

[0055] The synthesis method is as follows:

[0056] Step 1. According to the ratio of raw materials, take iron ion-containing metal salt and complexing agent into a container, add 10L solvent and mix evenly to become solution A for use;

[0057] Step 2, according to the ratio of raw materials, take metal salt containing ferricyanide ion and put it into a container, add 10L solvent and mix evenly to prepare solution B for later use;

[0058] Step 3, put solution A and solution B into the container, and mix and react ...

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Abstract

The invention provides a method for synthesizing a high-sodium iron-based Prussian blue electrode material. The high-sodium iron-based Prussian blue electrode material comprises the following raw materials in percentage by mole: 25-43 percent of iron ion-containing metal salt, 25-43 percent of ferricyanide ion-containing metal salt and 14-50 percent of a complexing agent. The method comprises the following steps: 1, adding the iron ion-containing metal salt and the complexing agent into a container according to the ratio of the raw materials, adding a solvent, mixing, thereby obtaining a solution A; 2, adding the ferricyanide ion-containing metal salt into the container according to the ratio of the raw materials, adding the solvent, mixing, thereby obtaining a solution B; 3, mixing the solution A and the solution B, and reacting for 2-24 hours; and 4, respectively washing the obtained materials for several times by using water and ethanol, removing the impurities, drying, thereby obtaining the high-sodium iron-based Prussian blue electrode material. The obtained material serves as a sodium ion battery cathode material and has excellent electrochemical performance. The method is low in cost, readily available in raw materials, simple in process and easy for industrial production.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and relates to a synthesis method of a high-sodium iron-based Prussian blue electrode material. Background technique [0002] With the development of human society, energy issues are increasingly concerned. Traditional fossil fuels pollute the environment and are non-renewable, while renewable energy such as wind energy, solar energy, and ocean energy are greatly affected by weather and time periods, and have obvious instability, discontinuity, and uncontrollable characteristics, which require the development and construction of supporting electric energy Storage (energy storage) devices are used to ensure the continuity and stability of power generation and power supply, and large-scale electric energy storage technology is used in the power industry for "peak-shaving and valley-filling" of electric power, which will greatly improve the contradiction between supply and demand of ele...

Claims

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Application Information

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IPC IPC(8): H01M4/60H01M4/139
CPCH01M4/139H01M4/36H01M10/054Y02E60/10
Inventor 张五星刘阳黄云辉薛丽红杨森聂梦洲张军辉
Owner 张五星
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