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Preparation method and use of pyrolite oxide nanosheet

An oxide, nanosheet technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of limiting the commercial application of catalysts, high catalyst overpotential, slow kinetics, etc. The effect of high yield, low reaction temperature and simple process

Inactive Publication Date: 2020-01-14
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although IrO 2 and RuO 2 It is also the electrocatalyst with the best catalytic OER properties at present. However, due to the IrO 2 and RuO 2 Expensive, which limits the commercial application of the catalyst
[0004] According to literature research, OER requires multi-step electron transfer and transfer due to the strong O=O bond, resulting in slow kinetics and high overpotential of the catalyst.

Method used

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  • Preparation method and use of pyrolite oxide nanosheet
  • Preparation method and use of pyrolite oxide nanosheet
  • Preparation method and use of pyrolite oxide nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of pyrite oxide nanosheets, the operation steps are as follows: at room temperature, weigh 1.2g of P123, 2.18g of polyphosphoric acid and 20mL of absolute ethanol into a dry and clean beaker, stir for 30min, then add 1.2g of P123 Cobalt acetate tetrahydrate was stirred for 60 minutes until it was completely dissolved to obtain a mixed solution; the whole mixed solution was pipetted with a pipette gun, put into a polytetrafluoroethylene autoclave, put into an oven, and directly heated to 180°C and reacted at a constant temperature for 12 hours; After the reaction kettle was naturally cooled to room temperature, it was washed 3 times with absolute ethanol, and the solid was separated by centrifugation. After the solid was washed, a pink product was obtained, and the pink product was dried in a vacuum oven at 40°C to obtain pyrite oxide nanosheets. .

[0022] The obtained pyrite oxide nanosheets were analyzed by XRD and TEM respectively, and the result...

Embodiment 2

[0028] The reaction temperature in Example 1 was replaced by 160°C, the reaction time was replaced by 14h, and the direct temperature increase was replaced by a temperature increase at a rate of 3°C / min. Other operations were the same as in Example 1.

Embodiment 3

[0030] The reaction temperature in Example 1 was replaced by 200°C, the reaction time was replaced by 10h, and the direct temperature increase was replaced by a temperature increase at a rate of 10°C / min. Other operations were the same as in Example 1.

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PUM

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Abstract

The invention discloses a method for preparing a pyrolite oxide nanosheet. The method comprises reacting P123 with polyphosphoric acid and cobalt acetate tetrahydrate to obtain the pyrolite oxide nanosheet. The invention also discloses the use of the pyrolite oxide nanosheet as a fuel cell oxygen evolution reaction catalyst. The pyrolite oxide nanosheet obtained by the method is applied to a fuelcell oxygen evolution reaction, and is innovative, high in efficiency, and low in cost.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a preparation method and application of pyrite oxide nanosheets. Background technique [0002] As the global economy grows, everyone becomes more dependent on energy. So far, most of the energy we need comes from traditional fossil fuels (coal, oil, and natural gas, etc.), which are not sustainable and have limited reserves. The severe energy crisis and environmental pollution caused by fossil energy consumption are increasingly endangering the sustainable development of human society. It is imminent to develop cost-effective green energy storage technology and new energy. [0003] Fuel cells have the characteristics of high energy efficiency, no noise, no pollution, and continuous and stable operation. They are considered to be the most promising new energy technology in the 21st century. will normal H 2 -O 2 The fuel cell and the hydrolysis pool will be cycled in a ce...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/88H01M4/9016Y02E60/50
Inventor 穆雪琴陈长伟刘慧敏杨慧谷佳妮
Owner NANJING XIAOZHUANG UNIV