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Nanocrystalline copper oxide/ ferrite composite porous fiber electrode material and preparation method and application thereof

A technology of porous fibers and electrode materials, applied in the field of micro-nano structure electrode materials and their preparation and application, can solve the problems of large difference in electrochemical properties of copper oxide materials, low specific capacity of copper oxide electrode materials, etc., and achieve good cycle charging Effects of discharge performance, fine grain size, and high porosity

Active Publication Date: 2014-04-30
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although the research on copper oxide in supercapacitors has begun to appear, the specific capacity of the copper oxide electrode material in the prior art is relatively low, and there is still a certain gap from industrial production, and the irreversibility of the first charge and discharge process limits its application.
In addition, the electrochemical properties of copper oxide materials with different morphologies and compositions vary greatly.

Method used

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  • Nanocrystalline copper oxide/ ferrite composite porous fiber electrode material and preparation method and application thereof
  • Nanocrystalline copper oxide/ ferrite composite porous fiber electrode material and preparation method and application thereof
  • Nanocrystalline copper oxide/ ferrite composite porous fiber electrode material and preparation method and application thereof

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Embodiment 1

[0035] A nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present invention, the fiber electrode material is mainly composed of two-phase composites of copper oxide and spinel ferrite, the chemical formula of the fiber electrode material is expressed as:

[0036] CuO / 10%CuFe 2 o 4 ;

[0037] The grain size of copper oxide in the fiber electrode material is 20nm-40nm, the grain size of spinel ferrite is 30nm-55nm; the fiber diameter of the fiber electrode material is 1μm-5μm, and the fiber aspect ratio is 50 ~1000, the surface pore size of the fiber electrode material is distributed between 50nm and 500nm.

[0038] The preparation method of the nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present embodiment above specifically includes the following steps:

[0039] (1) Mix 3.993g copper acetate with 1.616g Fe(NO 3 ) 3 9H 2 O was mixed and dissolved in 250mL of deionized water to form a mixed solu...

Embodiment 2

[0045] A nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present invention, the fiber electrode material is mainly composed of two-phase composites of copper oxide and spinel ferrite, the chemical formula of the fiber electrode material is expressed as:

[0046] CuO / 10%CoFe 2 o 4 ;

[0047] The grain size of copper oxide in the fiber electrode material is 20nm-40nm, the grain size of spinel ferrite is 30nm-55nm; the fiber diameter of the fiber electrode material is 1μm-5μm, and the fiber aspect ratio is 50 ~1000, the surface pore size of the fiber electrode material is distributed between 50nm and 500nm.

[0048] The preparation method of the nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present embodiment above specifically includes the following steps:

[0049] (1) Mix 3.5937g copper acetate with 1.616g Fe(NO 3 ) 3 9H 2 O was mixed and dissolved in 250mL of deionized water to form a mixed sol...

Embodiment 3

[0055] A nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present invention, the fiber electrode material is mainly composed of two-phase composites of copper oxide and spinel ferrite, the chemical formula of the fiber electrode material is expressed as:

[0056] CuO / 30%(Zn 0.5 Ni 0.5 )Fe 2 o 4 ;

[0057] The grain size of copper oxide in the fiber electrode material is 20nm-40nm, the grain size of spinel ferrite is 30nm-55nm; the fiber diameter of the fiber electrode material is 1μm-5μm, and the fiber aspect ratio is 50 ~1000, the surface pore size of the fiber electrode material is distributed between 50nm and 500nm.

[0058] The preparation method of the nanocrystalline copper oxide / ferrite composite porous fiber electrode material of the present embodiment above specifically includes the following steps:

[0059] (1) 2.7951g copper acetate and 4.848g Fe(NO 3 ) 3 9H 2 O was mixed and dissolved in 200mL of deionized water to form ...

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Abstract

The invention discloses a nanocrystalline copper oxide / ferrite composite porous fiber electrode material and a preparation method and application thereof. The nanocrystalline copper oxide / ferrite composite porous fiber electrode material is mainly formed by compositing copper oxide and spinel type ferrite, and the chemical formula of the nanocrystalline copper oxide / ferrite composite porous fiber electrode material is CuO / xRFe2O4, wherein the R is Cu or Zn or Co or Mn or Ni. The crystalline size of the copper oxide and the spinel type ferrite is of the nanometer scale. The fiber diameter of the copper oxide and the spinel type ferrite is of the micrometer scale. The preparation method of the nanocrystalline copper oxide / ferrite composite porous fiber electrode material comprises the steps of firstly, mixing and dissolving copper acetate and inorganic salt of metal Fe into deionized water, then adding organic acid, using ammonium hydroxide for adjusting the acid-base property to be alkalescence, then evaporating and dehydrating the mixture to obtain spinnability gel, obtaining a fiber precursor after wire drawing, conducting sintering at high temperature, and obtaining the composite porous fiber electrode material after conducting cooling finally. The application of the porous fiber electrode material for preparing a supercapacitor has the advantages of being high in porosity, small in crystalline grain, strong in electronic transmission capability and the like.

Description

technical field [0001] The invention belongs to the technical field of micro-nano structure electrode materials and their preparation and application, and in particular relates to a copper oxide / ferrite composite porous fiber material which can be used as a supercapacitor electrode material and its preparation method and application. Background technique [0002] Copper oxide (CuO) and spinel ferrite (RFe 2 o 4 , R is Cu, Zn, Co, Mn, Ni, etc.) are good semiconductor materials, and have been extensively researched and applied in the fields of solid oxide fuel cells, catalysts, sensors, photoelectric conversion, and lithium-ion battery anode materials. In recent years, many researchers have synthesized a series of CuO and RFe with different morphologies 2 o 4 , and its application in supercapacitors has been studied. For example, Sun et al. used copper nitrate and activated carbon as raw materials to prepare a CuO-doped hybrid supercapacitor by chemical deposition method. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/46B82Y30/00B82Y40/00
CPCY02E60/13
Inventor 邹联力沈湘黔景茂祥周友元廖达前
Owner CHANGSHA RES INST OF MINING & METALLURGY
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