Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method and application of ce-co-s-p nanocrystal

A ce-co-s-p, nano-crystal technology, applied in the field of nano-crystal, achieves the effects of short time, low reaction temperature and simple process

Active Publication Date: 2022-06-03
NANJING XIAOZHUANG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on triggering phosphide phase transition and regulating the performance of electrocatalysis by utilizing the rich redox properties, good electronic conductivity, and flexible coordination ability of rare earth element cerium.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method and application of ce-co-s-p nanocrystal
  • A kind of preparation method and application of ce-co-s-p nanocrystal
  • A kind of preparation method and application of ce-co-s-p nanocrystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] At room temperature, weigh 203.5 mg (0.375 mmol) of ceric ammonium nitrate and 178.2 mg (0.7 mmol) of cobalt acetylacetonate, and add all the raw materials together into a dry three-neck round-bottomed flask with a capacity of 250 mL, and then use a plastic-tip dropper. Measure 1.5 mL of oleic acid, 8 mL of n-dodecanethiol and 5 mL of tri-n-octylphosphine, add them into a three-neck round-bottom flask, and mix them evenly to obtain a solution.

[0027] The three-neck round-bottomed flask was transferred to a sand bath, and heated to 320°C for 30min at a rate of 7°C / min under programmed temperature control. After the reaction was completed, the reactor was naturally cooled to room temperature, and an appropriate amount of 3:1 by volume was added. The n-heptane and ethanol were dispersed, and the solid was separated by centrifugation. After the solid was washed, the product was Ce-Co-S-P nanocrystals, which were dried under vacuum at 60°C for analysis and characterization...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a kind of preparation method of Ce-Co-S-P nanocrystal, comprises the following steps: mixing ceric ammonium nitrate, cobalt acetylacetonate, oleic acid, n-dodecyl mercaptan, tri-n-octyl phosphine, heating up to 320 o C, heat preservation reaction, the obtained product is dispersed and settled, and centrifuged to obtain Ce-Co-S-P nanocrystals. The Ce-Co-S-P nanocrystals prepared in the present invention have excellent OER performance and can efficiently catalyze OER in fuel cells. And the present invention adopts the "one pot cooking" method, utilizes Ce to effectively regulate the phase transition of Co-S-P nanosheets, and simultaneously adjusts the catalytic performance, the process is simple, the reaction temperature is low, the time is short, and it is suitable for mass production. For renewable energy Technological development has important guiding significance.

Description

technical field [0001] The invention relates to the technical field of nanocrystals, in particular to a preparation method and application of a Ce-Co-S-P nanocrystal. Background technique [0002] As an ideal clean energy fuel, hydrogen not only has high energy density when applied to energy conversion devices such as fuel cells, but also has no carbon emissions and is environmentally friendly. Among many hydrogen production methods, hydrogen production by electrolysis of water has received extensive attention due to its green and high efficiency. Hydrogen production from water electrolysis mainly includes two half-reactions, the cathodic hydrogen evolution reaction (HER) and the anodic oxygen evolution reaction (OER). At present, Pt group active metal-based materials are still the most efficient catalysts for catalyzing HER (Pt, Ir, Ru, etc.) / OER (Ir / Ru oxides, etc.), but their high cost and poor stability seriously affect the electrolysis of water for hydrogen production....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90B82Y40/00B82Y30/00
CPCH01M4/9091B82Y30/00B82Y40/00Y02E60/50
Inventor 封飞艳毛启昕钱春竹杨浩曹佳段海宝刘苏莉陈昌云
Owner NANJING XIAOZHUANG UNIV