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Method for preparing hierarchical porous oxygen-rich carbon nanocones from organic metal complexes

A carbon nanocone and hierarchical porous technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, electrochemical generators, etc., to achieve simple equipment and production processes, easy large-scale application, excellent cycle performance and rate performance Effect

Inactive Publication Date: 2016-05-18
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the heteroatoms in the organic ligands can ensure that the resulting HPC is rich in heteroatom doping and defect

Method used

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  • Method for preparing hierarchical porous oxygen-rich carbon nanocones from organic metal complexes
  • Method for preparing hierarchical porous oxygen-rich carbon nanocones from organic metal complexes
  • Method for preparing hierarchical porous oxygen-rich carbon nanocones from organic metal complexes

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 0.811gFeCl 3 Dissolve in 50mL water, combine magnetic stirring and ultrasonic vibration to make FeCl 3 Fully dissolve. Dissolve 4.803g of o-hydroxybenzoic acid in 50mL of water, combine magnetic stirring and ultrasonic vibration to make FeCl 3 Fully dissolve. Then a homogeneous aqueous solution of o-hydroxybenzoic acid was slowly added to the FeCl 3 In the aqueous solution, stir at room temperature for 2h, once drop into the aqueous solution of o-hydroxybenzoic acid, FeCl 3 The aqueous solution changed from red to deep purple, and the solution began to become cloudy, indicating that the complexation reaction had occurred. After continuous magnetic stirring for 2 h, the obtained precipitate was centrifuged, dried, and then heat-treated in a tube furnace at 600° C. for 2 h under the protection of nitrogen, and finally hierarchical porous heteroatom-rich carbon nanocones were obtained. The prepared hierarchical porous heteroatom-rich carbon nanocone has a length of 2-...

Embodiment 2

[0031] 0.811gFeCl 3 Dissolve in 50mL water, combine magnetic stirring and ultrasonic vibration to make FeCl 3 Fully dissolve. Dissolve 4.803g of o-hydroxybenzoic acid in 50mL of water, combine magnetic stirring and ultrasonic vibration to make FeCl 3 Fully dissolve. Then the homogeneous o-hydroxybenzoic acid aqueous solution was slowly added dropwise to the FeCl 3 In the aqueous solution, stir at room temperature for 2h, once drop into the aqueous solution of o-hydroxybenzoic acid, FeCl 3 The aqueous solution changed from red to deep purple, and the solution began to become cloudy, indicating that the complexation reaction had occurred. After continuous magnetic stirring for 2 h, the obtained precipitate was centrifuged, dried, and then heat-treated in a tube furnace at 700° C. for 2 h under the protection of nitrogen, and finally hierarchical porous heteroatom-rich carbon nanocones were obtained. When used as a negative electrode material for lithium-ion batteries, at 50...

Embodiment 3

[0033] 2.02Fe(NO 3 ) 3 Dissolve in 50mL water, combine magnetic stirring and ultrasonic vibration to make Fe(NO 3 ) 3 Fully dissolve. Dissolve 4.803g of o-hydroxybenzoic acid in 50mL of water, combine magnetic stirring and ultrasonic vibration to make Fe(NO 3 ) 3 Fully dissolve. Then the homogeneous o-hydroxybenzoic acid aqueous solution was slowly added dropwise to the FeCl 3 In the aqueous solution, stir at room temperature for 2 hours, once the aqueous solution of o-hydroxybenzoic acid is dropped, Fe(NO 3 ) 3 The aqueous solution changed from red to deep purple, and the solution began to become cloudy, indicating that the complexation reaction had occurred. After continuous magnetic stirring for 2 h, the obtained precipitate was centrifuged, dried, and then heat-treated in a tube furnace at 600° C. for 2 h under the protection of nitrogen, and finally hierarchical porous heteroatom-rich carbon nanocones were obtained. The material has multifunctional energy storage...

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Abstract

The invention belongs to the technical field of new energy materials and particularly relates to a method for preparing hierarchical porous heteroatom-rich one-dimensional carbon nanocones through one-step carbonization after organic metal complexes are prepared through simple complexation reactions of ferric salt and organic ligands in a room temperature environment. A one-dimensional carbon nanocone material has multifunctional energy storage applications, can have the reversible capacity of 758 mA h g<-1> after being circulated for 60 times under the current density of 50 mA g<-1> when used as an anode material of a lithium-ion battery, can have the capacity up to 182.7 F g<-1> at the sweep speed of 5 mV s<-1> when applied to a capacitor, and can still have the capacity of 188 mA h g<-1> after being circulated for 400 times under the current density of 100 mA g<-1> when used as an anode material of a sodium-ion battery. Besides, the one-dimensional carbon nanocone material shows higher potential in the aspect of sulfur storage. Raw materials for synthesis of the material are cheap, and the synthesis process is convenient, so that the method is very suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to the synthesis of hierarchically porous and heteroatom-rich one-dimensional carbon nanocones by simple iron-based organometallic complexes through one-step carbonization treatment. The obtained materials can be used in lithium-ion batteries, supercapacitors, Energy storage fields such as sodium-ion batteries and lithium-sulfur batteries have important applications. Background technique [0002] Hierarchical porous carbon materials (HPCs) have attracted extensive attention in various fields due to their high electrical conductivity, large specific surface area, light weight, superior chemical stability, and low cost. So far, porous carbons with different pore structures and morphologies have been synthesized by utilizing different carbon precursors and pore-forming methods. However, despite the diversification of synthetic methods, complex synthetic proced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/583H01M4/1393H01G11/36H01G11/86
CPCH01G11/36H01G11/86H01M4/1393H01M4/583H01M10/0525Y02E60/10
Inventor 张景萍范朝英孙海珠吴兴隆李欢欢
Owner NORTHEAST NORMAL UNIVERSITY
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