Lithium thioferrite LiFe2S3 and preparation method thereof

LiFe2S3, lithium thioferrate, was successfully prepared by mixing iron, sulfur and lithium sources in a specific molar ratio and insulated in a closed system, solving the problems of high equipment requirements, long time and pollution in the existing technology, and achieving the goal of green and large-scale production.

CN119706951APending Publication Date: 2025-03-28SHAANXI UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411816662.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing preparation methods for lithium thioferrate compounds have problems such as high equipment requirements, long time-consuming, toxic gas emissions, and the introduction of other organic solvents, making it difficult to achieve green and large-scale production.

Method used

The mole ratio of iron, sulfur and lithium sources is 1: (2.1-20): (2.1-20) is mixed evenly and grinded, put it in a sealed system and insulated at 110-250°C for 1 to 12 hours, and then washed, filtration and dried by water to obtain lithium ferroferrate LiFe2S3.

Benefits of technology

It has achieved the advantages of simple process, short time, low energy consumption, low cost, large output, no toxic gas discharge, no introduction of other organic solvents, and no pollution. It can prepare pure phase particles in a short time, and is free of miscellaneous phases, and is suitable for industrial production.

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Abstract

The invention discloses lithium thioferrite LiFe2S3 and a preparation method thereof, and belongs to the technical field of material preparation, a sulfur source, an iron source and a lithium source are uniformly mixed according to a certain stoichiometric ratio and ground, the mixture is put into a closed system according to a certain filling ratio, heat preservation is performed for 1-12 hours at the temperature of 110-250 DEG C, and then lithium thioferrite LiFe2S3 particles are obtained through water washing, suction filtration and drying; compared with the existing method, the preparation method disclosed by the invention has the advantages of simple process, short time consumption, low energy consumption, low cost, high yield, no toxic gas emission, no introduction of other organic solvents, no pollution and the like.
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