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Preparation method of supercapacitor positive electrode material based on anoxic tin oxide nanosheet flower balls

A technology for supercapacitors and cathode materials, applied in hybrid capacitor electrodes, tin oxide, nanotechnology for materials and surface science, etc., can solve problems such as poor conductivity and poor cycle stability, and achieve improved safety, low cost, and The effect of production process safety

Inactive Publication Date: 2020-01-21
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its poor conductivity and poor cycle stability limit its practical application, so how to improve the performance of tin oxide-based electrode materials has always been a hot spot in the research of tin oxide-based supercapacitor electrode materials.

Method used

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  • Preparation method of supercapacitor positive electrode material based on anoxic tin oxide nanosheet flower balls
  • Preparation method of supercapacitor positive electrode material based on anoxic tin oxide nanosheet flower balls
  • Preparation method of supercapacitor positive electrode material based on anoxic tin oxide nanosheet flower balls

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preparation example Construction

[0039] The preparation method of the supercapacitor anode material based on the oxygen-deficient tin oxide nanosheet curd proposed by the present invention comprises the following steps and content:

[0040] (1) First weigh 0.8-2.6g stannous chloride dihydrate and 1.5-2.5g trisodium citrate dihydrate powder into 20-60mL deionized water, then magnetically stir for 30-60min until a uniform and stable milky white color is formed For the suspension, slowly pour absolute ethanol into the container according to the volume ratio of absolute ethanol: deionized water 5:1-1:1 and continue to stir for 30-60min until a clear precursor solution is obtained, set aside.

[0041] (2) Transfer the precursor solution to a stainless steel autoclave, then seal and assemble the autoclave, and then place the autoclave in an oven for heat preservation. After the reaction is completed, cool down to room temperature naturally, collect the precipitate in the reaction kettle, and use deionized water and...

Embodiment 1

[0048] Embodiment 1: First take by weighing 0.8g stannous chloride dihydrate and 1.5g trisodium citrate dihydrate powder respectively and add into 60mL deionized water, then stir magnetically for 30min until a uniform and stable milky white suspension is formed, then press the Water ethanol: deionized water 1:1 volume ratio, slowly pour absolute ethanol into the container and continue to stir for 30 minutes until a clear precursor solution is obtained, set aside. Then, the precursor solution was transferred to a 150mL stainless steel high-pressure reactor, and then the reactor was sealed and assembled, and then the reactor was placed in an oven and kept at 180°C for 12h. After the reaction was completed and cooled to room temperature naturally, the precipitate in the reaction kettle was collected, washed with deionized water and absolute ethanol for three times, and placed in an oven at 60°C for 10 hours to dry for later use. Spread the dry precipitate loosely on the bottom of...

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Abstract

The invention relates to a preparation method of a supercapacitor positive electrode material based on anoxic tin oxide nanosheet flower balls, and belongs to the technical field of preparation and application of new energy materials. The positive electrode material is composed of highly anoxic tin oxide nanosheets, and the nanosheets are regularly arranged into a flower ball shape, wherein the nanosheets are powdery substances macroscopically. As a working electrode, the electrode material is large in specific surface area, sufficient in active site exposure, good in conductivity, large in specific capacitance, good in structural stability and non-toxic and harmless to a human body. The method comprises the steps: taking stannous chloride dehydrate and trisodium citrate dehydrate as raw materials, and depositing Sn3O4 nanosheet flower ball powder through solvothermal deposition; and then carrying out high-temperature thermal reduction on the powder in a vacuum tube furnace to finallyobtain the positive electrode material. The method has the advantages that the product yield is high and the composition and morphology are controllable; the raw materials, equipment and technologicalprocesses are simple; the cost is low; the production process is safe; the electrode material is clean and environmentally friendly, and the large-scale production is facilitated.

Description

technical field [0001] The invention relates to a method for preparing a supercapacitor anode material based on anoxic tin oxide nano-sheet curds, and belongs to the technical field of new energy material preparation and application thereof. Background technique [0002] In recent years, with the rapid development of modern society and the continuous improvement of human living standards, human demand for energy and resources has continued to increase, and more and more scientific researchers have invested in various sustainable and renewable energy storage material research. Among them, supercapacitors, also known as electrochemical capacitors, are a new type of high-efficiency energy storage element between traditional capacitors and rechargeable batteries, with fast charging and discharging speed, high power density, long cycle life and working Wide temperature range and other advantages have been widely used in fields such as energy and electronic devices. [0003] It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/24C01G19/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G19/02H01G11/24H01G11/46Y02E60/13
Inventor 彭志坚田也王琪符秀丽
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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