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A kind of Ru modified conip nanocrystal and its preparation method and application

A nanocrystalline and nanotechnology, applied in the field of nanometers, can solve the problems of overpotential and low catalytic activity, and achieve excellent HER performance, low reaction temperature and simple process

Active Publication Date: 2018-06-19
武汉言诺嘉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to literature research, although transition metal phosphides have high catalytic activity, their overpotential and catalytic activity are significantly lower than those of commercial Pt / C catalysts.

Method used

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  • A kind of Ru modified conip nanocrystal and its preparation method and application
  • A kind of Ru modified conip nanocrystal and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] At room temperature, weigh 178 mg (0.7 mmol) Co(acac) 2 , 112 mg (0.75 mmol) Ni(HCO 2 ) 2 and 104mg (0.5 mmol) RuCl 3 • xH 2 O powder, and all the raw materials were added into a dry three-necked round-bottomed flask with a capacity of 250 mL, and then 3 mL of DDA, 1.5 mL of OA and 5 mL of TOP were measured with a graduated cylinder, added to the round-bottomed flask, ultrasonicated and Stir until completely dissolved to give a black solution.

[0032] Transfer the round-bottomed flask to a sand bath, heat up to 320 °C at a rate of 7 °C / min under programmed temperature control, keep warm for 30 min, cool to room temperature, continue to heat up to 320 °C at 7 °C / min, and keep warm 30 min to the end of the reaction. After the reactor was naturally cooled to room temperature, an appropriate amount of ethanol was added to disperse, and the solid was separated by centrifugation. The solid was washed to obtain a black product, which was used for analysis and characteri...

Embodiment 2

[0039] At room temperature, weigh 127 mg (0.5 mmol) Co(acac) 2 , 82 mg (0.55 mmol) Ni(HCO 2 ) 2 and 83 mg (0.4 mmol) RuCl 3 • xH 2 O powder, and all the raw materials were added together into a dry three-neck round bottom flask with a capacity of 250 mL, and then 2.5 mL of DDA, 1.5 mL of OA and 3.6 mL of TOP were measured with a graduated cylinder, added to the round bottom flask, ultrasonicated and Stir until completely dissolved to give a black solution.

[0040] Transfer the round-bottomed flask to a sand bath, heat up to 320 °C at a rate of 7 °C / min under programmed temperature control, keep warm for 30 min, cool to room temperature, continue to heat up to 320 °C at 7 °C / min, and keep warm 30 min to the end of the reaction. After the reactor was naturally cooled to room temperature, an appropriate amount of ethanol was added to disperse, and the solid was separated by centrifugation. The solid was washed to give a black product, which was dried overnight in a vacuum ...

Embodiment 3

[0042] At room temperature, weigh 127 mg (0.5 mmol) Co(acac) 2 , 75 mg (0.5 mmol) Ni(HCO 2 ) 2 and 62 mg (0.3 mmol) RuCl 3 • xH 2 O powder, and all the raw materials were added together into a dry three-neck round bottom flask with a capacity of 250 mL, and then 1 mL of DDA, 1 mL of OA and 3 mL of TOP were measured with a graduated cylinder, added to the round bottom flask, ultrasonicated and Stir until completely dissolved to give a black solution.

[0043] Transfer the round-bottomed flask to a sand bath, heat up to 320 °C at a rate of 7 °C / min under programmed temperature control, keep warm for 30 min, cool to room temperature, continue to heat up to 320 °C at 7 °C / min, and keep warm 30 min to the end of the reaction. After the reactor was naturally cooled to room temperature, an appropriate amount of ethanol was added to disperse, and the solid was separated by centrifugation. The solid was washed to give a black product, which was dried overnight in a vacuum oven. ...

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Abstract

The invention discloses a Ru modified CoNiP nano-crystal as well as a preparation method and application thereof and belongs to the field of nanometer. The Ru modified CoNiP nano-crystal is a metal monomer modified irregular flake structure and a crystal phase is Ru and is a face-centered cubic phase; a CoNiP nano-crystal is a hexagonal crystalline phase. According to the Ru modified CoNiP nano-crystal as well as the preparation method and the application thereof, a one-pot boiling preparation method is adopted and the Ru modified CoNiP nano-crystal is obtained by utilizing a procedure temperature control mode; the Ru modified CoNiP nano-crystal prepared by the preparation method has an excellent HER property which is better than that of a commercial Pt-C catalyst. Meanwhile, the preparation method has the industrial characteristics of simple technology, low reaction temperature and short time and is suitable for batch production.

Description

technical field [0001] The invention relates to a Ru-modified CoNiP nanocrystal and a preparation method and application thereof, belonging to the field of nanometers. Background technique [0002] With the world's increasing energy needs and environmental problems, it is imminent to find clean energy. In recent years, renewable H 2 -O 2 Fuel cells are considered to be the most promising new energy technology in the 21st century because of their high energy efficiency, no noise, no pollution, and continuous and stable operation. In the process of designing fuel cells, improving the reaction efficiency of the hydrogen evolution reaction (HER) has become the key to commercial applications. According to the Sabatier theory, the reaction rate of HER is determined by the reactive intermediate H ad Bonding energy between active centers on the electrode surface (M-H ad ) is directly determined by the size. only when H ad When the adsorption energy between atoms and metal is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCH01M4/90H01M4/9041Y02E60/50
Inventor 刘苏莉陈昌云穆雪琴吕云陈碧瑶王磊周全
Owner 武汉言诺嘉科技有限公司
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