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Sulfide preparation device and method and application of device

A technology for preparing devices and sulfides, applied in chemical instruments and methods, alkali metal sulfides/polysulfides, chemical/physical/physicochemical stationary reactors, etc. Lithium sulfide preparation, complex reaction process and other problems, to achieve the effect of easy separation, high production efficiency and high purity

Active Publication Date: 2022-02-01
CHINA AUTOMOTIVE INNOVATION CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction process is complicated, and side reactions are prone to occur, which affects the preparation of lithium sulfide.
[0006] CN110073536A discloses a manufacturing method of a sulfide solid electrolyte, and discloses a preparation device, which first reacts with a pulverizing mixer and a temperature reaction tank, so that the suspension containing raw materials and solvents reacts with the temperature in the pulverizing mixer through a connecting pipe Circulation in the tank, in order to pulverize the raw materials while reacting to obtain a solid electrolyte, but the pulverization process is only suitable for the preparation of solid raw materials, if the reaction raw material is gas, the pulverization process will not have a beneficial effect

Method used

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  • Sulfide preparation device and method and application of device
  • Sulfide preparation device and method and application of device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a specific implementation method for preparing sulfide by a sulfide preparation device.

[0033] First, 0.5kg of powdered lithium hydroxide is added into the reaction chamber 3, and then 0.6m / s hydrogen sulfide gas is continuously injected into the chamber with a volume of 25.12m under high pressure. 3The inside of the reaction chamber 3 is filled with hydrogen sulfide gas. The automatic control valve 7 can be set with different opening and closing modes according to the needs, and the opening and closing of the hydrogen sulfide inlet 5 under the reaction chamber is opened and closed in sequence. When the automatic control valve 7 on the left is opened and the automatic control valve 7 on the right is closed, the hydrogen sulfide gas is completely charged into the reaction chamber 3 from the left air inlet at a relatively high pressure. The powdery lithium hydroxide inside the body is blown up from the left side by the hydrogen sulfide gas and ...

Embodiment 2

[0036] In this embodiment, the flow rate of hydrogen sulfide is replaced by 0.1 m / s, and other conditions are the same as in embodiment 1.

Embodiment 3

[0038] In this embodiment, the flow rate of hydrogen sulfide is replaced by 1m / s, and other conditions are the same as in Embodiment 1.

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Abstract

The invention provides a sulfide preparation device and method and application of the device. The preparation device comprises a reaction unit, a hydrogen sulfide supply unit and a gas treatment unit, the reaction unit comprises a reaction cavity and a vortex device located at the bottom of the reaction cavity, and a hydrogen sulfide inlet is formed in the bottom of the reaction cavity and connected with the hydrogen sulfide supply unit through a first pipeline; and a gas outlet is formed in the top of the reaction cavity and is connected with the gas treatment unit. According to the device for rapidly, efficiently and continuously preparing the sulfide material, only manual feeding and receiving are needed, the device is provided with a recovery system and a treatment system, waste treatment and raw material recycling can be achieved, the system forms a closed loop, safety in the preparation process is ensured, and prepared sulfide is easy to separate and high in purity.

Description

technical field [0001] The invention relates to the field of lithium batteries, and relates to a preparation device and method of sulfide and an application thereof. Background technique [0002] As a representative of modern high-performance batteries, lithium-ion batteries have been widely used in digital products, electric vehicles, energy storage products, etc. Safe solid-state batteries have become the mainstream direction of current research. Among the developed solid-state electrolytes, sulfide solid-state electrolytes have attracted extensive attention due to their high ionic conductivity. The main raw material for the synthesis of sulfide solid electrolytes is lithium sulfide, which is widely used in the field of battery material technology. The existing preparation methods of lithium sulfide can be roughly divided into ball milling method, solvent method, high temperature and high pressure method and direct carbon composite method. Several methods relatively have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18C01B17/22
CPCB01J19/18B01J19/0053C01B17/22C01P2006/80Y02E60/10
Inventor 张强黄璟黄祯刘张波
Owner CHINA AUTOMOTIVE INNOVATION CORP
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