Carbon fiber-zinc oxide nanorod composite material as well as preparation method and application thereof

A technology of zinc oxide nanorods and composite materials, applied in the field of carbon fiber-zinc oxide nanorod composite materials and their preparation, can solve the problems of complicated mixing process and increased battery cost, etc.

Inactive Publication Date: 2020-06-16
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The zinc oxide nanopowders prepared by the three methods can be used as anode materials for lithium-ion batteries, but the powder materials need to be mixed with binders, conductive additives, etc. during the electrode preparation process, powder grinding and slurry mixing The process is relatively complicated, which increases the cost of battery production

Method used

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  • Carbon fiber-zinc oxide nanorod composite material as well as preparation method and application thereof
  • Carbon fiber-zinc oxide nanorod composite material as well as preparation method and application thereof
  • Carbon fiber-zinc oxide nanorod composite material as well as preparation method and application thereof

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preparation example Construction

[0035] The invention provides a method for preparing a carbon fiber-zinc oxide nanorod composite material, comprising the following steps:

[0036] Magnetron sputtering is used to sputter a zinc oxide seed layer on the surface of the conductive carbon cloth to obtain a conductive carbon cloth with a zinc oxide seed layer;

[0037] Annealing the conductive carbon cloth with the zinc oxide seed layer to obtain annealed conductive carbon cloth;

[0038] The annealed conductive carbon is arranged in a precursor solution containing a zinc source, and subjected to hydrothermal treatment to obtain the carbon fiber-zinc oxide nanorod composite material.

[0039] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0040]The invention adopts magnetron sputtering to sputter a zinc oxide seed crystal layer on the surface of the conductive carbon cloth to obtain the conductive carbo...

Embodiment 1

[0058] The WOS1002 hydrophilic carbon cloth was heated up to 300°C at a heating rate of 10°C / s. After annealing for 20 minutes, it was washed with acetone and absolute ethanol for 20 minutes under ultrasonic conditions, and dried at 70°C for 30 minutes to obtain pretreatment. conductive carbon cloth;

[0059] The pretreated conductive carbon cloth is fixed on the magnetron sputtering disc, and the magnetron sputtering chamber is vacuumed. When the chamber vacuum reaches 5×10 -4 At Pa, turn on the power supply of the heating plate and set the temperature to 300°C, heat the carbon cloth substrate, set the gas flow meter to the cleaning mode to remove the residual gas in the pipeline, and then set the gas flow to 20 sccm and O respectively. 2 The flow rate was 10 sccm, and the gas was started to be introduced into the chamber. Adjust the manual gate valve to stabilize the pressure in the chamber at 2Pa, turn on the radio frequency power supply and adjust the radio frequency pow...

Embodiment 2

[0064] The WOS1002 hydrophilic carbon cloth was heated up to 300°C at a heating rate of 10°C / s. After annealing for 20 minutes, it was washed with acetone and absolute ethanol for 20 minutes under ultrasonic conditions, and dried at 70°C for 30 minutes to obtain pretreatment. conductive carbon cloth;

[0065] The pretreated conductive carbon cloth is fixed on the magnetron sputtering disc, and the magnetron sputtering chamber is vacuumed. When the chamber vacuum reaches 5×10 -4 At Pa, turn on the power supply of the heating plate and set the temperature to 300°C, heat the carbon cloth substrate, set the gas flow meter to the cleaning mode to remove the residual gas in the pipeline, and then set the gas flow to 20 sccm and O respectively. 2The flow rate was 10 sccm, and the gas was started to be introduced into the chamber. Adjust the manual gate valve to stabilize the pressure in the chamber at 2Pa, turn on the radio frequency power supply and adjust the radio frequency powe...

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Abstract

The invention relates to the technical field of lithium ion battery negative electrode materials, and particularly relates to a carbon fiber-zinc oxide nanorod composite material as well as a preparation method and application thereof. According to the invention, a magnetron sputtering and hydrothermal combined method is adopted, and zinc oxide nanorods can uniformly grow on a carbon cloth substrate under the condition that a template does not need to assist the forming growth of the nanorods. The obtained zinc oxide nanorod is of a hexagonal wurtzite structure, the length is 1-3 microns, andthe size is uniform; and the carbon fiber-zinc oxide nanorod composite material can be directly used as a current collector of a negative electrode material, the zinc oxide nanorod directly grows on the carbon fiber and is in good contact with a carbon fiber substrate, an additional binder and a conductive additive are not needed, and the technological process of battery preparation is simplified.The prepared composite material shows relatively high specific capacity and cycling stability when being used as a lithium ion battery negative electrode material.

Description

technical field [0001] The invention relates to the technical field of negative electrode materials for lithium ion batteries, in particular to a carbon fiber-zinc oxide nanorod composite material and a preparation method and application thereof. Background technique [0002] In recent years, due to the advantages of high specific capacity, long cycle life, high capacity density and environmental protection, lithium-ion batteries have been widely used in portable digital electronic equipment and power vehicles and other industries. With the gradual increase of people's demand for energy, the requirements for the specific capacity and rate performance of lithium-ion batteries are also gradually increased. However, existing Li-ion battery technology is reaching its limits in terms of energy density and specific capacity. In order to increase the capacity of lithium-ion batteries, people have been looking for higher capacity electrode materials. Transition metal oxides have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/62H01M10/0525B82Y30/00B82Y40/00C23C14/08C23C14/35C23C14/58
CPCB82Y30/00B82Y40/00C23C14/086C23C14/35C23C14/5806H01M4/483H01M4/625H01M10/0525H01M2004/021H01M2004/022H01M2004/027Y02E60/10
Inventor 夏晓红高云肖煌周佳盈田嘉成凯文·皮特·霍姆伍德
Owner HUBEI UNIV
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