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Chlorosulfenyl hydride superconducting material and preparation method thereof

A chlorine-sulfur-based hydride, superconducting material technology, applied in sulfur and halogen compounds, the usage of superconducting elements, superconducting devices, etc.

Active Publication Date: 2022-04-19
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this phase transition temperature needs a very high pressure condition to achieve, for SH 3 , the pressure requirement is probably 200GPa, which is equivalent to 2 million atmospheric pressure, the conditions are very harsh, and it is difficult to achieve even in the laboratory
The research and development of the current reports are mostly focused on replacing or partially replacing other elements of the same main group as S, such as Se, Te, etc., and replacing them with adjacent main group elements such as P, N, etc., in an attempt to reduce SH 3 superconducting phase transition pressure, but all failed

Method used

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  • Chlorosulfenyl hydride superconducting material and preparation method thereof
  • Chlorosulfenyl hydride superconducting material and preparation method thereof
  • Chlorosulfenyl hydride superconducting material and preparation method thereof

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preparation example Construction

[0035] Based on the same inventive concept, the embodiment of the present application also provides a method for preparing a chlorosulfanyl hydride superconducting material, including the following steps:

[0036] Provide sulfur powder, chlorine and hydrogen;

[0037] Sulfur powder, chlorine gas and hydrogen gas are pressurized and pressed to make them metallized to obtain the chlorosulfur-based hydride superconducting material.

[0038] In some embodiments, the pressure of the pressurized pressing treatment is 90-200 GPa; the molar ratio of sulfur powder, chlorine gas and hydrogen gas is (1-2):(0.5-1):6.

[0039] Specifically, the superconducting transition temperature (that is, the superconducting critical temperature) that a superconducting material can achieve can be obtained by solving the Eliashberg equation. Usually, because it is too difficult to solve the Elieberger equation, the McMillan equation modified by Daines (equation 1 below) or the McMillan equation modifie...

Embodiment 1

[0061] The embodiment of the present application provides a chlorosulfanyl hydride superconducting material whose chemical formula is ClSH 6 .

[0062] The preparation method of the above-mentioned chlorosulfur-based hydride superconducting material comprises the following steps:

[0063] S1. Perform tableting treatment on the sulfur powder to obtain pre-pressed tablets;

[0064] S2, pre-pressing the rhenium gasket of the diamond anvil to form holes in the gasket;

[0065] S3, placing the pre-pressed sheet in the hole;

[0066] S4. Use the gas sealing device to fill chlorine and hydrogen into the diamond counter-anvil, and control the diamond counter-anvil to pressurize the pre-pressed sheet, chlorine gas and hydrogen to make it metallized, and prepare a chlorosulfur-based hydride superconductor Material.

[0067] Among them, the molar ratio of sulfur powder, chlorine gas and hydrogen gas is 2:1:6, and the pressure controlled by pressurization is 90GPa.

[0068] The cryst...

Embodiment 2

[0072] The embodiment of the present application provides a chlorosulfanyl hydride superconducting material whose chemical formula is ClSH 6 .

[0073] The preparation method of the above-mentioned chlorosulfur-based hydride superconducting material comprises the following steps:

[0074] S1. Perform tableting treatment on the sulfur powder to obtain pre-pressed tablets;

[0075] S2, pre-pressing the rhenium gasket of the diamond anvil to form holes in the gasket;

[0076] S3, placing the pre-pressed sheet in the hole;

[0077] S4. Use the gas sealing device to fill chlorine and hydrogen into the diamond counter-anvil, and control the diamond counter-anvil to pressurize the pre-pressed sheet, chlorine gas and hydrogen to make it metallized, and prepare a chlorosulfur-based hydride superconductor Material.

[0078] Among them, the molar ratio of sulfur powder, chlorine gas and hydrogen gas is 2:1:6, and the pressure controlled by pressurization is 200GPa.

[0079] The crys...

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Abstract

The invention provides a chlorothio hydride superconducting material and a preparation method thereof. The chemical formula of the superconducting material is ClSH6. The preparation method of the superconducting material comprises the following steps: providing sulfur powder, chlorine and hydrogen; and pressurizing and pressing the sulfur powder, chlorine and hydrogen to metallize the sulfur powder, chlorine and hydrogen to obtain the chlorothio hydride superconducting material. According to the superconducting material, Cl is used for partially replacing S to reduce the superconducting phase change pressure intensity of SH3, the superconducting material is a superconducting material system with ternary metal characteristics, and a larger space is provided for selection and application of the superconducting material; specifically, the working pressure of the chlorothio hydride superconducting material is 90 GPa to 200 GPa, the critical superconducting temperature is 83.41 K to 155.41 K, the working pressure and the critical superconducting temperature have wide modulation ranges, and the chlorothio hydride superconducting material can be better suitable for various industry fields.

Description

technical field [0001] The invention relates to the technical field of superconducting materials, in particular to a chlorosulfanyl hydride superconducting material and a preparation method thereof. Background technique [0002] Superconducting materials play an important role in the fields of energy, information electronics, and quantum devices because of their characteristic that the resistance will disappear at a certain temperature. The current superconducting materials can be roughly divided into traditional superconductors, copper-based superconductors, iron-based superconductors, interface superconductors, hydrogen-based superconductors, carbon-based superconductors, etc., among which hydrogen-based superconductors are regarded as one of the most important high-temperature superconductors. For hydrogen-based superconducting materials, as early as 1935, Wigner et al. proposed that insulating solid hydrogen transforms into a metallic state under high pressure, that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/45H01B12/00
CPCC01B17/45H01B12/00C01P2002/80Y02E40/60
Inventor 海玉龙陈晓嘉钟国华王仁树
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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