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Flexible porous nanomaterial as well as preparation method and application thereof

A nanomaterial, flexible technology, applied in the fields of electrochemistry and nanomaterials, which can solve the problems of difficulty in obtaining high-quality materials, limiting large-scale applications, high cost and toxicity, etc.

Active Publication Date: 2021-06-01
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although RuO 2 Has excellent electrochemical performance, but high cost and toxicity limit its large-scale application
And NiO, Co 3 o 4 and MnO 2 Such low conductivity also makes it difficult for supercapacitors to obtain high specific capacity and energy density.

Method used

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  • Flexible porous nanomaterial as well as preparation method and application thereof
  • Flexible porous nanomaterial as well as preparation method and application thereof
  • Flexible porous nanomaterial as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a flexible porous nanomaterial, specifically as follows:

[0035] NiCo 2 o4 The preparation of the porous nanostructure array is synthesized by hydrolysis and solvothermal reaction, and successfully prepared on the CFC support without the addition of conductive agent and binder. First put the clean CFC (flexible carbon fiber) into the solution of nickel sulfate and cobalt sulfate, add urea, react at 90°C for 10 hours, then transfer to a 40ml polytetrafluoroethylene-lined stainless steel autoclave for hydrothermal reaction. Cool at the end of the reaction, centrifuge, wash with deionized water and ethanol several times, dry in a vacuum oven at 60°C, and then calcinate in an air atmosphere at 300-500°C for 2 hours to obtain the core NiCo 2 o 4 / CFC. Then NiCo 2 o 4 / CFC, 1mmol Fe(NO 3 ) 3 9H 2 O, 1 mmol MnCl 2 4H 2 O, 0.2mmol HMT (hexamethylenetetramine), 0.1mmol GS (glucose) were placed in deionized water, stirred at room temperature for ...

Embodiment 2

[0038] A method for preparing a flexible porous nanomaterial, specifically as follows:

[0039] NiCo 2 o 4 The preparation of the porous nanostructure array is synthesized by hydrolysis and solvothermal reaction, and successfully prepared on the CFC support without the addition of conductive agent and binder. First put the clean CFC (flexible carbon fiber) into the solution of nickel sulfate and cobalt sulfate, add urea, react at 90°C for 10 hours, then transfer to a 40ml polytetrafluoroethylene-lined stainless steel autoclave for hydrothermal reaction. Cool at the end of the reaction, centrifuge, wash with deionized water and ethanol several times, dry in a vacuum oven at 60°C, and then calcinate in an air atmosphere at 300-500°C for 2 hours to obtain the core NiCo 2 o 4 / CFC. Then NiCo 2 o 4 / CFC, 3mmol Fe(NO 3 ) 3 9H 2 O, 1 mmol MnCl 2 4H 2 O, 0.5mmol HMT (hexamethylenetetramine), 0.3mmol GS (glucose) were placed in deionized water, stirred at room temperature fo...

Embodiment 3

[0042] A method for preparing a flexible porous nanomaterial, specifically as follows:

[0043] NiCo 2 o 4 The preparation of the porous nanostructure array is synthesized by hydrolysis and solvothermal reaction, and successfully prepared on the CFC support without the addition of conductive agent and binder. First put the clean CFC (flexible carbon fiber) into the solution of nickel sulfate and cobalt sulfate, add urea, react at 90°C for 10 hours, then transfer to a 40ml polytetrafluoroethylene-lined stainless steel autoclave for hydrothermal reaction. Cool at the end of the reaction, centrifuge, wash with deionized water and ethanol several times, dry in a vacuum oven at 60°C, and then calcinate in an air atmosphere at 300-500°C for 2 hours to obtain the core NiCo 2 o 4 / CFC. Then NiCo 2 o 4 / CFC, 10mmol Fe(NO 3 ) 3 9H 2 O, 2 mmol MnCl 2 4H 2 O, 1mmol HMT (hexamethylenetetramine), 0.8mmol GS (glucose) were placed in deionized water, stirred at room temperature for...

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Abstract

The invention relates to a flexible porous nanomaterial as well as a preparation method and application thereof. The nanomaterial uses flexible carbon fibers as a carrier, NiCo2O4 as a core and a glucose-intercalated layered bimetallic FeMn-GS-LDH material as a shell. The preparation method comprises the following steps: firstly, preparing NiCo2O4 on the flexible carbon fibers, andthen with NiCo2O4 as the core, preparing the glucose-intercalated layered bimetallic FeMn-GS-LDH material on the surface of NiCo2O4 as a shell. The nanomaterial can be applied to the technical field of energy equipment. Compared with the prior art, the nanomaterial is excellent in performance and low in raw material price, and the preparation method is simple in process and friendly to environment.

Description

technical field [0001] The invention relates to the technical field of electrochemistry and nanometer materials, in particular to a flexible porous nanometer material and its preparation method and application. Background technique [0002] Transition metal oxides usually have multiple oxidation states, which facilitate fast and reversible redox reactions on the electrode surface, leading to higher specific capacitance values. In recent years, transition metal oxides have been extensively studied as electrode materials for supercapacitors, such as RuO 2 , NiO, Co 3 o 4 , MnO 2 Wait. Although RuO 2 It has excellent electrochemical performance, but its high cost and toxicity limit its large-scale application. And NiO, Co 3 o 4 and MnO 2 Such low conductivity also makes it difficult for supercapacitors to obtain high specific capacity and energy density. [0003] Multinary (mixed) metal oxides, especially binary metal oxides with two different metal ions, have receive...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/36H01G11/86H01G11/24
CPCH01G11/24H01G11/36H01G11/30H01G11/86Y02E60/13
Inventor 成汉文赵博言李明晶
Owner SHANGHAI INST OF TECH
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