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Metallic oxide nanowire coil/active carbon fiber composite electrode material and preparation thereof

A technology of activated carbon fiber and composite electrode, applied in the fields of materials and electrochemistry, can solve the problems of low energy density of supercapacitors, and achieve the effects of being conducive to rapid migration, high power storage capacity and compact structure

Inactive Publication Date: 2015-04-29
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with batteries, the energy density of supercapacitors is too low, only a few tenths of that of batteries.

Method used

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  • Metallic oxide nanowire coil/active carbon fiber composite electrode material and preparation thereof
  • Metallic oxide nanowire coil/active carbon fiber composite electrode material and preparation thereof
  • Metallic oxide nanowire coil/active carbon fiber composite electrode material and preparation thereof

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Embodiment 1

[0025] A metal oxide nanocoil / activated carbon fiber composite electrode material, comprising activated carbon fibers, cobalt and nickel oxides, the cobalt and nickel oxides are coated and grown on the activated carbon fibers in the form of nanowires or nanocoils surface.

[0026] The present invention also provides a preparation method of the above-mentioned metal oxide nanocoil / activated carbon fiber composite electrode material, the specific steps are:

[0027] Step 1: adding cobalt sulfate and nickel acetate into water to make a mixed aqueous solution containing 0.5% cobalt sulfate and 0.3% nickel acetate with a weight concentration, the common industrial activated carbon fiber needle felt (such as the product of Anhui Jialiqi Carbon Fiber Co., Ltd. ) washed with dilute hydrochloric acid and deionized water, dried and then immersed in the mixed aqueous solution of the above-mentioned cobalt sulfate and nickel acetate for 1 hour, then transferred to the hydrothermal reactor...

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PUM

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Abstract

The invention provides a metallic oxide nanowire coil / active carbon fiber composite electrode material and a preparation method thereof. The metallic oxide nanowire coil / active carbon fiber composite electrode material comprises active carbon fiber, cobalt oxide and nickel oxide, wherein the cobalt oxide and nickel oxide grow on the surface of the active carbon fiber in a covering manner in the form of nanowire or nanowire coil. The electrode material disclosed by the invention adopts a fluffy network structure, has large specific area and is in full contact with electrolyte; electrolyte ions have a short moving path, so that high convenience and rapidity are realized. Metallic oxides have larger surfaces and more active sites to participate in electrode reaction, so that the electric charge storage capacity and the power performance of the electrode are improved; in addition, the active carbon fiber can store electric charges, can also serve as a matrix to be easily processed into the electrode and is not dense. The composite electrode expresses the advantages of two types of electrode materials and overcomes the defects of a single electrode material.

Description

technical field [0001] The invention belongs to the field of materials and electrochemistry, and relates to a preparation method of a supercapacitor electrode material. Background technique [0002] As a new type of energy storage device, supercapacitors are more and more widely used in industries such as electric power, lighting, electronics, transportation, and automobiles. Supercapacitors have many advantages such as long life, fast charging, good power performance, and low cost of use, making them have great potential as new mobile power sources and vehicle drive power sources, and are expected to gradually replace batteries. However, compared with batteries, the energy density of supercapacitors is too low, only a few tenths of that of batteries. The energy density of a capacitor depends on the performance of the electrode material and electrolyte, and the electrode material is more critical. Its ability to store charges is related to both the chemical type of the mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/34H01G11/40
CPCH01G11/00H01G11/34H01G11/40H01G11/46H01G11/86Y02E60/13
Inventor 曾凡龙仲林刘占莲唐波曹国新吕永根曹谦芝
Owner DONGHUA UNIV
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