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Cop growth on the surface of a conductive substrate x o y Nanoarray Composite Material and Its Preparation and Application

A conductive substrate and composite material technology, applied in the field of nano-array composite materials, can solve problems such as environmental pollution, unsuitability for large-scale production and application, and achieve the effects of enriching electron density, improving catalytic hydrogen evolution performance, and increasing precipitation rate

Active Publication Date: 2021-04-30
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many literatures (Sun, X. et al. Adv. Mater. 2017, 29, 1602441; Yu, S. et al. Angew. Chem. Int. Ed. 2018, 57, 15445–15449; Chen, S. et al .EnergyEnviron.Sci.2018,11, 2246–2252) and patent application specifications (such as CN109518216A and CN108816258A) report the process of phosphating in most cobalt phosphide preparation methods, and this process will produce highly toxic pH 3 Gas (Li, X. et al. Angew. Chem. Int. Ed. 2018, 57, 1–6), serious environmental pollution, not suitable for large-scale production and application

Method used

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  • Cop growth on the surface of a conductive substrate <sub>x</sub> o <sub>y</sub> Nanoarray Composite Material and Its Preparation and Application
  • Cop growth on the surface of a conductive substrate <sub>x</sub> o <sub>y</sub> Nanoarray Composite Material and Its Preparation and Application
  • Cop growth on the surface of a conductive substrate <sub>x</sub> o <sub>y</sub> Nanoarray Composite Material and Its Preparation and Application

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A NF self-supporting superhydrophilic and superaerophobic CoP for hydrogen production from water electrolysis in alkaline solution x o y Nano array material, its preparation method is as follows:

[0037] 1) Cut the commercialized NF into 20×50mm rectangular slices, first wash them ultrasonically with hydrochloric acid (HCl), then ultrasonically wash them with distilled water, and finally wash them ultrasonically with ethanol. After washing, dry overnight in a vacuum oven at 60 °C. Hang the dried NF on a rubber stopper and store it in a vacuum oven at 60°C for later use.

[0038] 2) 2.2g CoCl 2 ·6H 2 O and 4.5 g NaH 2 PO 2 ·H 2 O was added to the test tube containing 50mL of isopropanol and ultrapure water with a volume ratio of 1:1, stirred and dissolved and placed in N 2 Drain the air under the atmosphere, and after 15 minutes, seal it with the rubber stopper containing suspended NF in step 1), NF is completely immersed in the solution, and after sealing, send...

Embodiment 2

[0046] With embodiment 1 step 2) in 60 Co gamma rays were changed to electron beams produced by an electron accelerator, the absorbed dose rate was 10kGy / pass, and the absorbed dose was 200kGy. Other conditions were the same as in Example 1, and NF@CoP for hydrogen production by electrolysis of water was obtained. x o y Catalytic material, where x=0.9, y=0.3.

Embodiment 3

[0048] Change the absorbed dose rate in step 2) of Example 1 to 10Gy / min, and other conditions are the same as in Example 1 to obtain NF@CoP for hydrogen production by electrolysis of water x o y Catalytic material where x=0.5, y=0.2.

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Abstract

The present invention announced a COP on the surface growth of conductive substrate x O y Nano array composite materials and their preparation and application.The present invention regulates the growth of cobalt phosphate (COP x O y ) Nano array (0.5 <x <1,0.1 <y <0.5), the COP x O y The nano -array structure has the properties of super -intimate water and ultra gas. In the alkaline solution, the electrolyte hydrogen -making performance is good. Among them, the properties of super hydrophilicity accelerate the transmission rate of electrolyte reaching the electrode surface.The output rate is further reduced to HER's excessive potential; the cobalt -doping cobalt phosphate is rich in electronic density, thereby increasing the conductivity and accelerating the transmission rate of electrolytes, and helps improve the catalytic hydrogen analysis performance.Moreover, the radiation method is caused by room temperature, no need to add cause, efficient and easy to control, and will not produce a toxic pH during the preparation process. 3 Gas, has a broad application prospect for environmental friendship.

Description

technical field [0001] The invention relates to the field of nano-array composite materials, in particular to growing CoP on the surface of a conductive substrate x o y Nano-array material, as well as the preparation method and application of the composite material. Background technique [0002] Hydrogen has become one of the future fossil energy substitutes due to its advantages of high energy density (120MJ / Kg), environmental protection and renewability. At present, electrolysis of water to catalyze hydrogen evolution (Hydrogen Evolution Reaction, HER) is a widely used scheme in hydrogen production technology. However, this reaction has a high overpotential at the cathode, leading to a substantial increase in the cost of producing hydrogen. At present, the commercially used catalysts that can efficiently reduce the overpotential are mainly metal platinum and its compounds, but due to its limited reserves on the earth and high development costs, its further development a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/185B01J37/34B01J37/08C25B11/054C25B11/075C25B1/04
CPCB01J27/1853B01J37/34B01J37/347B01J37/08C25B1/04C25B11/091B01J35/33B01J35/40Y02E60/36
Inventor 李久强陈熙邦彭静翟茂林
Owner PEKING UNIV
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