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Method for preparing copper sulfide nanosheets and compound thereof by using low-temperature vulcanization technique and application

A low-temperature vulcanization and copper sulfide technology, applied in copper sulfide, nanotechnology, nanotechnology, etc., can solve the problems of complex production process, high energy consumption, high cost, etc., and achieve the effect of rapid experimentation, high utilization rate and excellent performance

Active Publication Date: 2018-10-16
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a synthesis method of functional nano-lithium and sodium ion battery anode materials with low raw material price, simple process, mild reaction conditions, environmental protection, and excellent performance, so as to overcome the complicated production process of current battery materials, which can Disadvantages such as high consumption and high cost

Method used

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  • Method for preparing copper sulfide nanosheets and compound thereof by using low-temperature vulcanization technique and application
  • Method for preparing copper sulfide nanosheets and compound thereof by using low-temperature vulcanization technique and application
  • Method for preparing copper sulfide nanosheets and compound thereof by using low-temperature vulcanization technique and application

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Experimental program
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Effect test

Embodiment 1

[0049] Mix 50mg of zero-dimensional solid hexahedral copper oxide particle solid powder with 100mg of sulfur powder to obtain a solid mixture; place the obtained solid mixture in a high-pressure reactor filled with inert gas; place the reactor containing the mixture in an oven at 150°C Heating in medium for 2h. After cooling, the product in the reactor was taken out, and the obtained solid was calcined at 250° C. for 1 h at a heating rate of 2° C. / min under a nitrogen atmosphere. Copper sulfide nanosheets were obtained. The nanosheets were used as negative electrode materials to make lithium-ion batteries for testing.

Embodiment 2

[0051] Mix 20mg of solid octahedral cuprous oxide solid powder with 10mg of sulfur powder to obtain a solid mixture; place the obtained solid mixture in a high-pressure reactor filled with inert gas; place the reactor containing the mixture in an oven at 150°C Heat for 2h. After cooling, the product in the reactor was taken out, and the obtained solid was calcined at 250° C. for 1 h at a heating rate of 2° C. / min under a nitrogen atmosphere. Copper sulfide nanosheets were obtained. The nanosheets were used as negative electrode materials to make lithium-ion batteries for testing.

Embodiment 3

[0053] Mix 20mg of hollow octahedral copper oxide solid powder with 100mg of sulfur powder to obtain a solid mixture; place the obtained solid mixture in a high-pressure reactor filled with inert gas; place the reactor containing the mixture in an oven at 150°C for heating 2h. After cooling, the product in the reactor was taken out, and the obtained solid was calcined at 250° C. for 1 h at a heating rate of 2° C. / min under a nitrogen atmosphere. Copper sulfide nanosheets were obtained. The nanosheets were used as negative electrode materials to make lithium-ion batteries for testing.

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Abstract

The invention discloses a method for preparing copper sulfide and a composite nano material thereof by using low-temperature vulcanization technique, and the application in lithium and sodium ion batteries and belongs to the technical field of functional nano material preparation. The method comprises the following steps: uniformly mixing copper oxide solid powder with a sulfur powder, and carrying out low-temperature pressurizing heating in an inert atmosphere, so as to obtain a copper sulfide nano material. When being applied to cathode materials of lithium and sodium ion batteries, the material prepared by using the method has the advantages of being long in service life, high in capacity and stable in circulation property; the whole process is simple in procedure, low in raw material price, free of toxic products, low in energy consumption, green and environmental-friendly and high in raw material utilization rate; defects that a conventional lithium and sodium ion battery materialis high in production cost, complex in process and excessive and impure in byproduct are overcome, and the method is applicable to industrial large-scale production.

Description

technical field [0001] The invention relates to a method for preparing copper sulfide and its composite nanomaterials, which can be used as negative electrode materials for lithium and sodium ion batteries at low temperature, and belongs to the technical field of preparation of functional nanomaterials. Background technique [0002] Since the 21st century, the human demand for energy has been increasing, and traditional fossil energy has been far from meeting people's needs, and the environmental problems brought about by traditional fossil energy have also limited its use and development in the new era. The energy problem has become a problem that all mankind urgently needs to face and solve. Therefore, new energy technology has developed rapidly, and new energy has gradually entered people's life and production. Today's energy storage methods are rich and diverse, among which fuel cells, bio-batteries and ion batteries are the main energy storage methods today. Looking a...

Claims

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Application Information

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IPC IPC(8): C01G3/12C01G49/02H01M4/58H01M10/0525H01M10/054B82Y30/00B82Y40/00
CPCH01M4/5815H01M10/0525H01M10/054B82Y30/00B82Y40/00C01G3/12C01G49/02C01P2004/20C01P2004/80C01P2006/40Y02P20/10Y02E60/10
Inventor 朱纪欣张桥徐峰
Owner NANJING UNIV OF TECH
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