Sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst and preparation method thereof

A technology of graphene coating and in-situ growth, which is applied in the chemical industry, sustainable manufacturing/processing, electrolytic components, etc., can solve the problems such as reports and limited applications of nickel-cobalt-iron hydrogen evolution catalysts that have not been seen, and achieve the preparation method The effect of simplicity, high catalytic activity, and high hydrogen yield

Pending Publication Date: 2021-10-22
JINGDEZHEN CERAMIC INSTITUTE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, these electrocatalysts only function in acidic or alkaline electrolytes, which limits their application in water electrolysis technologies that have different requirements on electrolyte pH.
[0004] At present...

Method used

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  • Sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst and preparation method thereof
  • Sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst and preparation method thereof
  • Sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst and preparation method thereof

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Embodiment Construction

[0019] An embodiment of a sulfur-phosphorus co-doped in-situ growth graphene-coated nickel-cobalt-iron hydrogen evolution catalyst is composed of Ni, Co, Fe, S, and P in the form of phosphorus sulfide, and is loaded on carbon paper. The general formula is (Ni x co y Fe z )S v P u @@CP, where 0≤x / y≤10, 0≤x / z≤10, 0≤v≤10, 0≤u≤10.

[0020] The formula parameters of each embodiment are as shown in table 1.

[0021] Table 1 each embodiment of the present invention (Ni x co y Fe z )S v P u Recipe parameters of @@CP catalyst

[0022] Example x y z v u Embodiment one 1 1 1 2 2 Embodiment two 2 1 1 2 2 Embodiment Three 1 1 2 2 3 Embodiment four 1 2 2 3 2

[0023] In the embodiment of the present invention, a method for preparing a nickel-cobalt-iron hydrogen evolution catalyst coated with sulfur-phosphorus co-doped in-situ growth graphene, the steps are as follows:

[0024] (1) According to the ratio of nickel nitrate...

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Abstract

The invention discloses a sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst, which is composed of Ni, Co, Fe, S and P in the form of phosphorus sulfide, is loaded on carbon paper, and has the general formula of (NixCoyFez) SvPu@CP, in the formula, x/y is more than or equal to 0 and less than or equal to 10, x/z is more than or equal to 0 and less than or equal to 10, v is more than or equal to 0 and less than or equal to 10, and u is more than or equal to 0 and less than or equal to 10. In addition, the invention further discloses a preparation method of the sulfur-phosphorus co-doped in-situ growth graphene coated nickel-cobalt-iron hydrogen evolution catalyst. The integrated (NixCoyFez) SvPu@CP catalyst electrode shows very prominent HER activity, has higher catalytic activity, higher hydrogen yield and more stable performance, can be widely applied to various hydrogen evolution electrolysis water catalysis, and has the advantages of energy conservation, environmental protection and low cost.

Description

technical field [0001] The invention relates to the technical field of catalytic materials, in particular to a trimetallic catalyst and a preparation method thereof. Background technique [0002] As people are increasingly concerned about energy crisis and environmental pollution, exploring sustainable energy to replace fossil fuels has become a common goal of global scientists. Hydrogen is considered to be the most potential substitute due to its zero carbon emission and high gravimetric energy density. Water electrolysis using electrocatalysts to facilitate the hydrogen evolution reaction (HER) has emerged as a promising method for hydrogen production. In water electrolysis, noble metals such as Pt are commonly used as electrocatalysts due to their high HER activity and stability across the entire pH range. However, their high cost and scarcity make them unsuitable for large-scale industrial production. Therefore, the development of low-cost noble-metal-free high-perfor...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B1/04
CPCC25B11/091C25B1/04Y02E60/36Y02P20/10
Inventor 李润润闫朝一李月明杨金龙
Owner JINGDEZHEN CERAMIC INSTITUTE
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