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A Fe-co-p-c series amorphous electrocatalyst for efficient hydrogen evolution reaction and preparation method thereof

A fe-co-p-c, electrocatalyst technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of low current density, high overpotential and poor stability of electrocatalysts, and achieve good electrocatalytic activity and low cost , good electrical conductivity

Active Publication Date: 2019-04-05
HEFEI UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to prepare a series of Fe-Co-P-C series amorphous alloy strips with excellent electrocatalytic activity and high stability for efficient hydrogen evolution reaction, so as to solve the problems of low current density, high overpotential and high overpotential of existing electrocatalysts. The problem of poor stability

Method used

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  • A Fe-co-p-c series amorphous electrocatalyst for efficient hydrogen evolution reaction and preparation method thereof
  • A Fe-co-p-c series amorphous electrocatalyst for efficient hydrogen evolution reaction and preparation method thereof
  • A Fe-co-p-c series amorphous electrocatalyst for efficient hydrogen evolution reaction and preparation method thereof

Examples

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Embodiment 1

[0026] This embodiment prepares Fe according to the following steps 40 co 40 P 13 C 7 Amorphous alloy strip:

[0027] (1) Preparation of master alloy ingot

[0028] According to the nominal composition Fe 40 co 40 P 13 C 7 , Fe powder, Co powder with a purity of 99.9wt.%, P powder and C powder with a purity of not less than 99.00wt.% are mixed, and then melted in a vacuum electric arc furnace under the protection of high-purity Ar gas. In order to ensure the alloy composition The composition of the master alloy is uniform, and the master alloy is repeatedly turned and smelted in the furnace for more than 4 times. During each smelting process, the ferrophosphorus and carbon powder are smelted as slowly as possible to prevent the volatilization of the raw materials due to excessive temperature. Finally, the master alloy ingot is obtained after cooling.

[0029] (2) High vacuum belt

[0030] The master alloy ingot obtained in step (1) is re-melted by induction heating, a...

Embodiment 2

[0035] In this example, the Fe-Co-P-C based amorphous electrocatalyst was prepared by the same method as in Example 1, the only difference being that the nominal composition of each raw material composition was changed to obtain strips with different compositions. The size parameters of the obtained samples are shown in Table 1. After characterization, each sample has an amorphous structure and has good electrocatalytic activity.

[0036] Table 1 Composition and size parameters of some samples of Fe-Co-P-C amorphous alloy strips

[0037] Sample composition

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Abstract

The invention discloses a Fe-Co-P-C-based amorphous electrocatalyst for efficient hydrogen evolution reaction and a preparation method thereof, which is characterized in that the electrocatalyst is a Fe-Co-P-C-based amorphous alloy strip, Its composition is Fe 80‑x co x P 20‑y C y , 0≤x≤50, 0≤y≤15, wherein x and y are the atomic percentages of Co element and C element in the Fe‑Co‑P‑C amorphous alloy strip, respectively. The electrocatalyst of the present invention is prepared by a melt spin quenching method, the preparation method is simple, easy to operate, low in cost, and environmentally friendly, the whole preparation process does not require special equipment, and large-scale industrial production can be carried out, and the obtained alloy strip is of high quality; The Fe-Co-P-C ribbon material prepared by the method of the invention can simultaneously realize the advantages of good electrical conductivity, many active sites, high electrocatalytic activity, etc., and is a hydrogen evolution electrocatalytic material with broad industrial application prospects.

Description

technical field [0001] The invention relates to the field of preparation of amorphous alloy strips and the application of electrocatalytic materials, in particular to an Fe-Co-P-C series amorphous electrocatalyst for high-efficiency hydrogen evolution reaction. Background technique [0002] Hydrogen, as a clean and renewable energy, is expected to replace fossil fuels and become an ideal energy carrier. Hydrogen generation by electrolysis of water is an effective way to obtain hydrogen energy. As an important half-reaction of electrocatalytic hydrolysis reaction, hydrogen evolution reaction is a research hotspot nowadays. [0003] In the early stage of hydrogen evolution reaction electrocatalyst research, people mainly focused on noble metal materials such as Pt and Pd. The high cost and scarcity of precious metal materials limit their wide commercial application. With the development of research in recent years, in order to avoid the high cost of use, the research of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C45/04C25B1/04C25B11/06
CPCC22C33/003C22C45/02C22C45/04C25B1/04C25B11/061C22C1/11Y02E60/36
Inventor 张博张发宝吴继礼蒋伟胡青卓
Owner HEFEI UNIV OF TECH
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