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A kind of method utilizing solar energy to prepare transition metal oxide/carbon composite material

A technology of carbon composite materials and transition metals, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of cumbersome preparation steps and high energy consumption, and achieve easy large-scale production, low energy consumption, and experimental The method is simple and easy to control the effect

Inactive Publication Date: 2019-04-30
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the traditional solvothermal method and high-temperature furnace heat treatment are mainly used to prepare transition metal oxide / carbon composite samples. The preparation steps are often cumbersome, and the prepared materials are mainly powders. At the same time, a lot of energy is required. Therefore, looking for A preparation method of supercapacitor materials that does not consume traditional heat and electricity becomes the key to promote the further development of this type of composite materials

Method used

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  • A kind of method utilizing solar energy to prepare transition metal oxide/carbon composite material

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Experimental program
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Effect test

Embodiment 1

[0019] Weigh 2 g of glucose, add it into 20 mL of deionized water, and disperse by ultrasonic to form a homogeneous solution, and ultrasonic for 5 minutes. The nickel foam was cut into small pieces of 1 cm × 2 cm, ultrasonically cleaned with acetone, ethanol, and deionized water, and then immersed in the prepared solution, and a small amount of solution was left on the surface of the nickel foam by pulling method. Use the solar cooker to focus the solar beam to heat the sample, the heating temperature is 450°C ± 10°C, and the heating time is 1 minute. After the reaction, the nickel oxide / carbon composite material was washed in deionized water, dried, and stored for later use.

Embodiment 2

[0021] Weigh 2 g of glucose, add it into 20 mL of deionized water, and disperse by ultrasonic to form a homogeneous solution, and ultrasonic for 5 minutes. The copper foam was cut into small pieces of 1 cm × 2 cm, ultrasonically cleaned with acetone, ethanol, and deionized water, and then immersed in the prepared solution, and a small amount of solution was left on the surface of the copper foam by pulling method. Use the solar cooker to focus the solar beam to heat the sample, the heating temperature is 450°C ± 10°C, and the heating time is 3 minutes. After the reaction, the copper oxide / carbon composite material was washed in deionized water, dried, and stored for later use.

Embodiment 3

[0023] Weigh 2 g of sucrose, add it into 20 mL of deionized water, and disperse by ultrasonic to form a homogeneous solution. Ultrasonic for 5 minutes. Cut the iron sheet into small pieces of 1cm×2cm, polish the surface with sandpaper, then ultrasonically clean it with acetone, ethanol, and deionized water, then immerse it in the prepared solution, and use the pulling method to leave a small amount of solution on the surface of the iron sheet . Use the solar cooker to focus the solar beam to heat the sample, the heating temperature is 450°C ± 10°C, and the heating time is 1 minute. After the reaction, the iron oxide / carbon composite material was washed in deionized water, dried, and stored for later use.

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Abstract

The invention discloses a method for preparing a transition metal oxide / carbon composite material by using solar energy. The method comprises the steps of adopting different transition metal base bodies such as sheet metal, mesh metal or foamed metal to act as a carrier and a metal source, using a biomass water solution such as starch, glucose or sucrose to act as a carbon source, then placing the metal base body coated with a biomass film at the focus of a focusing sunlight beam, controlling the temperature and time, and preparing a transition metal oxide / carbon composite material at the surface of the metal base body. The method disclosed by the invention does not need expensive instruments, low in raw material cost and easy to realize different synthesis scales.

Description

technical field [0001] The invention relates to a method for preparing a transition metal oxide / carbon composite material by utilizing solar energy, in particular to a method for preparing a transition metal oxide / carbon composite material on a transition metal matrix. Background technique [0002] With the continuous development of social economy and science and technology, the increasing emphasis on environmental protection and the demand for new energy expansion have led more and more scholars to turn their attention to new green energy storage devices. In addition, renewable energy, including solar energy, wind energy, and tidal energy, has the disadvantage of discontinuity in practical applications, so energy storage devices with high energy density, high power density, and high cycle stability are required. Supercapacitors have the characteristics of high power density, fast charging and discharging, and excellent cycle stability, so they become one of the most potenti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/46H01G11/44
CPCY02E60/13
Inventor 张可夫蒯颐熹钟小琳沈永杰何英杰潘婷姚兵钱秀珍赵崇军
Owner EAST CHINA UNIV OF SCI & TECH
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