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Carbon-coated iron oxide nanorod array material grown on foamed titanium substrate and its preparation method

A nanorod array and iron oxide technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of rapid electrode capacity decay, environmental impact, poor rate performance, etc., to achieve Effects of shortened transportation path, less environmental pollution, and high rate performance

Active Publication Date: 2022-03-15
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] "A Fe 2 o 3 Preparation method and application of in-situ vulcanization and carbon coating of nanorod array electrode" (CN106848301 B) patent technology, this technology uses titanium sheet as the substrate, utilizes hydrothermal method, through in-situ vulcanization and coating, although Fe 2 o 3 -S@C, but the rate performance is poor, and at the same time, when carbon coating is carried out, methane is used as the carbon source, which has an impact on the environment
[0007] "Growing Iron Oxide Nanorod Array Material on Foamed Titanium Substrate and Its Preparation Method" (202011261537.5) patent technology, the Fe produced by this technology 2 o 3 Although the nanorod array has excellent rate performance, the electrode capacity decays rapidly during cycling

Method used

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  • Carbon-coated iron oxide nanorod array material grown on foamed titanium substrate and its preparation method
  • Carbon-coated iron oxide nanorod array material grown on foamed titanium substrate and its preparation method
  • Carbon-coated iron oxide nanorod array material grown on foamed titanium substrate and its preparation method

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Embodiment 1

[0047] A carbon-coated iron oxide nanorod array material grown on a foamed titanium substrate and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0048] (1) by sodium sulfate: the mol ratio of ferric chloride hexahydrate is 1: 1 batching, mixes, obtains mixture; Then according to concentration, be 0.075mol / L that described mixture is dissolved in deionized water, stir under room temperature condition, A mixed solution was obtained.

[0049] (2) Ultrasonic cleaning of foamed titanium with detergent for 15 minutes, ultrasonic cleaning of ethanol for 20 minutes and ultrasonic cleaning of deionized water for 25 minutes, the foamed titanium after cleaning is immersed in the reaction kettle filled with the mixed solution, at 165 Hydrothermal reaction at ℃ for 6h, naturally cooled to room temperature; then washed with deionized water, dried at 80°C, annealed at 450°C for 2h under the protection of argon to obtain iron ox...

Embodiment 2

[0056] A carbon-coated iron oxide nanorod array material grown on a foamed titanium substrate and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0057] (1) by sodium sulfate: the molar ratio of ferric chloride hexahydrate is 1: 1 batching, mix, obtain mixture; Then be that 0.05mol / L is dissolved in deionized water by described mixture by concentration, stir under room temperature, A mixed solution was obtained.

[0058] (2) Ultrasonic cleaning of foamed titanium with detergent for 30 minutes, ultrasonic cleaning of ethanol for 15 minutes and ultrasonic cleaning of deionized water for 20 minutes, the foamed titanium after cleaning is immersed in the reaction kettle filled with the mixed solution, at 170 Hydrothermal reaction at ℃ for 5 hours, naturally cooled to room temperature; then washed with deionized water, dried at 60 ℃, annealed at 430 ℃ and under the protection of argon for 3 hours to obtain iron oxide na...

Embodiment 3

[0065] A carbon-coated iron oxide nanorod array material grown on a foamed titanium substrate. The specific steps of the preparation method described in this embodiment are:

[0066] (1) by sodium sulfate: the mol ratio of ferric chloride hexahydrate is 1: 1 batching, mixes, obtains mixture; Then according to concentration, be 0.06mol / L that said mixture is dissolved in deionized water, stir under room temperature, A mixed solution was obtained.

[0067] (2) Ultrasonic cleaning of foamed titanium with detergent for 20 minutes, ultrasonic cleaning of ethanol for 25 minutes and ultrasonic cleaning of deionized water for 30 minutes, the foamed titanium after cleaning is immersed in the reaction kettle filled with the mixed solution, at 160 Hydrothermal reaction at ℃ for 6h, naturally cooled to room temperature; then washed with deionized water, dried at 70°C, annealed at 460°C for 2h under the protection of argon to obtain iron oxide nanorods grown on foamed titanium substrates ...

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Abstract

The invention relates to a carbon-coated iron oxide nanorod array material grown on a foamed titanium substrate and a preparation method thereof. The technical scheme is: according to the concentration of 0.05-0.10mol / L, the molar ratio of sodium sulfate:ferric chloride hexahydrate is 1:1, mixed and then dissolved in deionized water, and hydrothermally reacted at 160-170°C for 5-7h , washing, drying, and annealing at 430-480° C. for 2-3 hours under the condition of argon to obtain the iron oxide nanorod array material grown on the foamed titanium substrate. Then immerse in 1.0-1.5mol / L glucose aqueous solution for 12-36 hours, and dry to obtain the carbon-coated iron oxide precursor; place the carbon-coated iron oxide precursor in a tubular atmosphere furnace, in a mixed atmosphere The temperature is raised to 630-680° C., kept warm, and cooled to prepare the carbon-coated iron oxide nanorod array material grown on the foamed titanium substrate. The invention has the advantages of simple process, convenient operation, environmental friendliness and industrialized production, and the manufactured product has high specific capacity, good rate performance and excellent cycle stability.

Description

technical field [0001] The invention belongs to the technical field of carbon-coated iron oxide nanorod array composite materials. It specifically relates to a carbon-coated iron oxide nanorod array material grown on a foamed titanium substrate and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and batteries. It is considered to be the most promising renewable clean energy conversion and storage device. It has high specific energy, wide operating temperature range, long service life, With the advantages of good cycle performance, high power density and environmental protection, it is widely used in electronic products, electric vehicle industry, aerospace and reserve power supply and other fields. At present, the research on supercapacitor electrode materials mainly includes carbon materials, metal oxides and conductive polymers, among which metal oxides have attracted more att...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/26H01G11/32H01G11/46H01G11/30B82Y40/00B82Y30/00
CPCH01G11/86H01G11/24H01G11/26H01G11/32H01G11/46H01G11/30B82Y40/00B82Y30/00
Inventor 李睿智李荣聪张灵周盈科
Owner WUHAN UNIV OF SCI & TECH
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