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Electrode material, preparation method thereof, and application of electrode material in removal of chloride ions and sodium ions in water

An electrode material and ion removal technology, applied in chemical instruments and methods, water pollutants, seawater treatment, etc., can solve problems such as the singleness of ion removal, and achieve the effect of high removal capacity

Active Publication Date: 2021-11-09
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current electrode materials suitable for this type of technology have the problem of ion removal singleness.

Method used

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  • Electrode material, preparation method thereof, and application of electrode material in removal of chloride ions and sodium ions in water
  • Electrode material, preparation method thereof, and application of electrode material in removal of chloride ions and sodium ions in water
  • Electrode material, preparation method thereof, and application of electrode material in removal of chloride ions and sodium ions in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] This embodiment discloses an electrode material. The electrode material is a bismuth-based material with a layered structure, and the bismuth-based material is NaBi in which alkali metal sodium and bismuth elements occupy a common site. 3 o 4 Cl 2 , the space group of bismuth-based materials is I4 / mmm, and the interlayer distance is

[0067] In this example, an electrode material was prepared, and the specific process was as follows: weigh 2.25g of bismuth oxide and 0.58g of sodium chloride, and obtain a uniform mixture by manual grinding for 30 minutes; under a protective atmosphere, calcinate at 600°C for 6 days to obtain a bismuth-based material , that is, the electrode material is obtained.

[0068] This embodiment provides a battery-type ion removal system, including a working electrode and a counter electrode, the working electrode is the bismuth-based material obtained by the above operation, and the counter electrode is selected from sodium titanium phosphat...

Embodiment 2

[0075] In this example, an electrode material was prepared. The specific process was as follows: weigh 2.6g of bismuth oxychloride and 0.58g of sodium chloride, and obtain a homogeneous mixture by manual grinding for 30 minutes; in a protective atmosphere, calcinate at 700°C for 8 days to obtain the final bismuth The base material, that is, the electrode material is obtained.

[0076] This embodiment provides a battery-type ion removal system, including a working electrode and a counter electrode, the working electrode is the bismuth-based material obtained by the above operation, and the counter electrode is selected from sodium titanium phosphate (NaTi 2 (PO 4 ) 3 ).

[0077] This embodiment provides an electrochemical ion removal system, including a cycle test device for electrochemical energy storage and a battery-type ion removal system, for removing chloride ions and sodium ions in water, including the following steps:

[0078] (1) Under the action of the cycle test e...

Embodiment 3

[0081] In this example, an electrode material was prepared, and the specific process was as follows: weigh 3g of bismuth oxide and 1g of sodium chloride, and obtain a uniform mixture by manual grinding for 30 minutes; under a protective atmosphere, calcinate at 800°C for 3 days to obtain a bismuth-based material, namely get the electrode material.

[0082] This embodiment provides a battery-type ion removal system. The battery-type ion removal system includes a working electrode and a counter electrode. The working electrode is the bismuth-based material obtained by the above operation, and the counter electrode is Prussian blue.

[0083] This embodiment provides an electrochemical ion removal system, including a cycle test device for electrochemical energy storage and a battery-type ion removal system, for removing chloride ions and sodium ions in water, including the following steps:

[0084] (1) Under the action of the cyclic test equipment for electrochemical energy storag...

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Abstract

The invention discloses an electrode material, a preparation method thereof and application of the electrode material in removal of chloride ions and sodium ions in water. The electrode material disclosed by the invention is a bismuth-based material with a layered structure, the bismuth-based material is MBi3O4X2 co-occupied by alkali metal and bismuth element, M is alkali metal, and X is halogen. The electrode material disclosed by the invention is a layered structure material with an electrochemical reversible phase change reaction characteristic, and due to the layered structure and the characteristic that the bismuth element and the alkali metal element occupy the space, the electrode material has an anion and cation removal performance on a water body containing chloride ions and sodium ions on the basis of the reversible phase change reaction. When the bismuth-based material is used in an electrochemical ion removal system, chloride ions and sodium ions in a water source can be effectively removed, and the bismuth-based material has relatively high removal capacity and can be recycled.

Description

technical field [0001] The invention relates to the technical field of electrochemical ion removal, in particular to an electrode material, its preparation method and its application in the removal of chloride ions and sodium ions in water. Background technique [0002] Water is the basic substance that human beings depend on for survival. With the rapid development of my country's economy, the shortage of fresh water resources and water pollution problems have gradually become prominent. Ion removal of seawater and sewage wastewater through appropriate technical methods can effectively solve the shortage of freshwater resources and water pollution, and accelerate the construction of my country's ecological civilization and the improvement of people's quality of life. Seawater desalination requires the removal of sodium ions and chloride ions in seawater. Halogen ions and metal ions in water mainly come from the electroplating industry, mechanical processing, mining, non-fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F103/08C02F101/12C02F101/10
CPCC02F1/46109C02F2001/46133C02F2103/08C02F2101/12C02F2101/10Y02E60/10
Inventor 陈洪卫文飞
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA