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Nitrogen-doped carbon-based Co/Ni12P5 oxygen evolution catalyst as well as preparation method and application thereof

A nitrogen-doped carbon and catalyst technology, applied in the direction of electrolysis components, electrodes, electrolysis process, etc., can solve the problems of high cost, low repeatability, unfavorable large-scale commercial application, complex process, etc.

Pending Publication Date: 2022-07-29
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, Co / Ni 12 P 5 The preparation method of materials is mainly hydrothermal method; however, this method requires high equipment, complicated process, high cost, and low repeatability, which is not conducive to large-scale commercial application

Method used

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  • Nitrogen-doped carbon-based Co/Ni12P5 oxygen evolution catalyst as well as preparation method and application thereof
  • Nitrogen-doped carbon-based Co/Ni12P5 oxygen evolution catalyst as well as preparation method and application thereof
  • Nitrogen-doped carbon-based Co/Ni12P5 oxygen evolution catalyst as well as preparation method and application thereof

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preparation example Construction

[0020] The invention provides a nitrogen-doped carbon-based Co / Ni 12 P 5 The preparation method of oxygen evolution catalyst comprises the following steps:

[0021] The cobalt source, nickel source, triphenylphosphine and melamine are mixed and sintered to obtain nitrogen-doped carbon-based Co / Ni 12 P 5 Oxygen evolution catalyst.

[0022] In the present invention, unless otherwise specified, the required preparation raw materials are all commercially available products well known to those skilled in the art.

[0023] In the present invention, the cobalt source is preferably cobalt nitrate; the nickel source is preferably nickel nitrate. The present invention utilizes triphenylphosphine to provide P element, and utilizes melamine to provide N and C elements.

[0024] In the present invention, the mass ratio of the cobalt source, nickel source, triphenylphosphine and melamine is preferably (0.25-0.5):(0.25-0.5):(0.25-0.5):(1-1.5).

[0025] In the present invention, the cob...

Embodiment 1

[0033] Put 0.25g of cobalt nitrate, 0.25g of nickel nitrate, 1.5g of melamine and 0.5g of triphenylphosphine in the grinding body, grind it into powder, place it in a porcelain boat, put the porcelain boat into a tube furnace, The temperature was raised to 900 °C for 1 h and sintered in an argon atmosphere to obtain nitrogen-doped carbon-based Co / Ni. 12 P 5 Oxygen evolution catalyst, denoted as 1-Co / Ni 12 P 5 @N-C.

Embodiment 2

[0035] Put 0.25g of cobalt nitrate, 0.5g of nickel nitrate, 1.5g of melamine and 0.5g of triphenylphosphine in the grinding body, grind it into powder, put it in a porcelain boat, put the porcelain boat into a tube furnace, The temperature was raised to 900 °C for 1 h and sintered in an argon atmosphere to obtain nitrogen-doped carbon-based Co / Ni. 12 P 5 Oxygen evolution catalyst, denoted as 2-Co / Ni 12 P 5 @N-C.

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Abstract

The invention provides a nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst as well as a preparation method and application thereof, and belongs to the technical field of water electrolysis hydrogen production. The preparation method of the nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst comprises the following steps: mixing a cobalt source, a nickel source, triphenylphosphine and melamine, and sintering to obtain the nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst. The nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst is prepared by adopting a one-step sintering method, and the method is simple and easy to implement, low in equipment requirement, low in cost, high in repeatability and controllable in reaction condition. The nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst prepared by the invention has good oxygen evolution performance, so that the nitrogen-doped carbon-based Co / Ni12P5 oxygen evolution catalyst can be widely applied to hydrogen production by water electrolysis.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a nitrogen-doped carbon-based Co / Ni 12 P 5 Oxygen evolution catalyst and preparation method and application thereof. Background technique [0002] Hydrogen production by electrolysis of water is an effective way to solve the current energy crisis and environmental pollution. It is of great significance to develop catalysts with low price, abundant reserves, excellent catalytic performance and strong stability. When a voltage is applied to an electrolytic cell filled with electrolyte, the water molecules undergo an electrochemical reaction on the electrodes and are decomposed into hydrogen and oxygen. Water splitting consists of two reactions, the cathodic hydrogen evolution reaction (HER) and the anodic oxygen evolution reaction (OER). High overpotentials result from slow oxygen evolution reaction (OER) kinetics. Therefore, it is necessary to...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/091
CPCC25B1/04C25B11/091
Inventor 冯爱玲陈亚楠刘培涛
Owner BAOJI UNIV OF ARTS & SCI
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